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Methyl Alcohol

Formula: CH₄O
Molecular weight: 32.0419
IUPAC Standard InChI: InChI=1S/CH4O/c1-2/h2H,1H3
IUPAC Standard InChIKey: OKKJLVBELUTLKV-UHFFFAOYSA-N
CAS Registry Number: 67-56-1
Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript.
Isotopologues:
Other names: Methanol; Carbinol; Methyl hydroxide; Methylol; Monohydroxymethane; Wood alcohol; CH3OH; Colonial spirit; Columbian spirit; Hydroxymethane; Wood naphtha; Alcool methylique; Alcool metilico; Columbian spirits; Metanolo; Methylalkohol; Metylowy alkohol; Pyroxylic spirit; Wood spirit; Rcra waste number U154; UN 1230; Pyro alcohol; Spirit of wood; Bieleski's solution; NSC 85232
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Ion clustering data

Go To: Top, References, Notes

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

+ Methyl Alcohol = ( • )

By formula: Br^- + CH₄O = (Br^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.50 ± 0.10	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	13.9 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.6	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8.00 ± 0.10	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	8.7 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B
Δ_rG°	8.4 ± 2.0	kcal/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..Br- of Hiraoka, Mizure, et al., 19882; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (Br^- • CH₄O) + CH₄O = (Br^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.00 ± 0.20	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	12.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.7	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.62	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	6.3 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (Br^- • 2CH₄O) + CH₄O = (Br^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.50 ± 0.50	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	10.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.6	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.25	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	4.2 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (Br^- • 3CH₄O) + CH₄O = (Br^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.9 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.2	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.0 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 4 Methyl Alcohol ) + = ( • 5)

By formula: (Br^- • 4CH₄O) + CH₄O = (Br^- • 5CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.2	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.3 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 5 Methyl Alcohol ) + = ( • 6)

By formula: (Br^- • 5CH₄O) + CH₄O = (Br^- • 6CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.1 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.6	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.1 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 6 Methyl Alcohol ) + = ( • 7)

By formula: (Br^- • 6CH₄O) + CH₄O = (Br^- • 7CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.9	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.7 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 7 Methyl Alcohol ) + = ( • 8)

By formula: (Br^- • 7CH₄O) + CH₄O = (Br^- • 8CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.4 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.1	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.5 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 8 Methyl Alcohol ) + = ( • 9)

By formula: (Br^- • 8CH₄O) + CH₄O = (Br^- • 9CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.2 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.	cal/mol*K	N/A	Hiraoka and Yamabe, 1991	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.3 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B

( • 9 Methyl Alcohol ) + = ( • 10)

By formula: (Br^- • 9CH₄O) + CH₄O = (Br^- • 10CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.0 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.	cal/mol*K	N/A	Hiraoka and Yamabe, 1991	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.1 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B

CHO^- + Methyl Alcohol = (CHO^- • )

By formula: CHO^- + CH₄O = (CHO^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	28.8	kcal/mol	PHPMS	Meot-ner and Sieck, 1986	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.7	cal/mol*K	PHPMS	Meot-ner and Sieck, 1986	gas phase; M

+ Methyl Alcohol = ( • )

By formula: CHO₂^- + CH₄O = (CHO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.6 ± 1.0	kcal/mol	N/A	Meot-Ner and Sieck, 1986	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.6	cal/mol*K	PHPMS	Meot-Ner and Sieck, 1986	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.5 ± 1.6	kcal/mol	TDAs	Meot-Ner and Sieck, 1986	gas phase; B

CH₃O^- + Methyl Alcohol = (CH₃O^- • )

By formula: CH₃O^- + CH₄O = (CH₃O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	29.3 ± 1.0	kcal/mol	TDAs	Paul and Kebarle, 1990	gas phase; B,M
Δ_rH°	28.80 ± 0.30	kcal/mol	TDAs	Meot-ner and Sieck, 1986	gas phase; B,M
Δ_rH°	29.4 ± 2.5	kcal/mol	TDAs	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Δ_rH°	19.0 ± 2.0	kcal/mol	N/A	Moylan, Dodd, et al., 1985	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	31.8	cal/mol*K	PHPMS	Paul and Kebarle, 1990	gas phase; M
Δ_rS°	26.7	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	20.30	kcal/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	19.8 ± 1.0	kcal/mol	TDAs	Paul and Kebarle, 1990	gas phase; B
Δ_rG°	20.80 ± 0.50	kcal/mol	TDAs	Meot-ner and Sieck, 1986	gas phase; B
Δ_rG°	20.3 ± 1.6	kcal/mol	TDAs	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
19.1	296.	FA	MacKay and Bohme, 1978	gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M

(CH₃O^- • Methyl Alcohol ) + = (CH₃O^- • 2)

By formula: (CH₃O^- • CH₄O) + CH₄O = (CH₃O^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.4	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.8	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M

(CH₃O^- • 2 Methyl Alcohol ) + = (CH₃O^- • 3)

By formula: (CH₃O^- • 2CH₄O) + CH₄O = (CH₃O^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.0	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.3	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M

(CH₃O^- • 3 Methyl Alcohol ) + = (CH₃O^- • 4)

By formula: (CH₃O^- • 3CH₄O) + CH₄O = (CH₃O^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.4	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.4	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M

(CH₃O^- • ) + Methyl Alcohol = (CH₃O^- • • )

By formula: (CH₃O^- • H₂O) + CH₄O = (CH₃O^- • CH₄O • H₂O)

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
13.7	296.	FA	MacKay and Bohme, 1978	gas phase; From thermochemical cycle,switching reaction(CH3O-)2H2O; Meot-Ner(Mautner), 1986; M

CH₅O⁺ + Methyl Alcohol = (CH₅O⁺ • )

By formula: CH₅O⁺ + CH₄O = (CH₅O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.6	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	32.3	kcal/mol	PHPMS	Szulejko and McMahon, 1992	gas phase; M
Δ_rH°	32.1	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rH°	33.1	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Δ_rH°	33.7	kcal/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.0	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	29.2	cal/mol*K	PHPMS	Szulejko and McMahon, 1992	gas phase; M
Δ_rS°	26.6	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rS°	30.5	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Δ_rS°	28.5	cal/mol*K	N/A	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	25.2	kcal/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

(CH₅O⁺ • Methyl Alcohol ) + = (CH₅O⁺ • 2)

By formula: (CH₅O⁺ • CH₄O) + CH₄O = (CH₅O⁺ • 2CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.2	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	21.0	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rH°	21.3	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.0	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	25.8	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rS°	28.2	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 2 Methyl Alcohol ) + = (CH₅O⁺ • 3)

By formula: (CH₅O⁺ • 2CH₄O) + CH₄O = (CH₅O⁺ • 3CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.0	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	16.1	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.0	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	28.9	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 3 Methyl Alcohol ) + = (CH₅O⁺ • 4)

By formula: (CH₅O⁺ • 3CH₄O) + CH₄O = (CH₅O⁺ • 4CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.3	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	13.5	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.3	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	28.7	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 4 Methyl Alcohol ) + = (CH₅O⁺ • 5)

By formula: (CH₅O⁺ • 4CH₄O) + CH₄O = (CH₅O⁺ • 5CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.2	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	12.5	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.5	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	31.1	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 5 Methyl Alcohol ) + = (CH₅O⁺ • 6)

By formula: (CH₅O⁺ • 5CH₄O) + CH₄O = (CH₅O⁺ • 6CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.3	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	11.9	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.5	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	32.9	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 6 Methyl Alcohol ) + = (CH₅O⁺ • 7)

By formula: (CH₅O⁺ • 6CH₄O) + CH₄O = (CH₅O⁺ • 7CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.0	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	12.0	kcal/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.7	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	35.7	cal/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 7 Methyl Alcohol ) + = (CH₅O⁺ • 8)

By formula: (CH₅O⁺ • 7CH₄O) + CH₄O = (CH₅O⁺ • 8CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.4	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.9	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

(CH₅O⁺ • 8 Methyl Alcohol ) + = (CH₅O⁺ • 9)

By formula: (CH₅O⁺ • 8CH₄O) + CH₄O = (CH₅O⁺ • 9CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.1	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.9	200.	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

(CH₅O⁺ • 9 Methyl Alcohol ) + = (CH₅O⁺ • 10)

By formula: (CH₅O⁺ • 9CH₄O) + CH₄O = (CH₅O⁺ • 10CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.7	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.5	200.	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

(CH₅O⁺ • 10 Methyl Alcohol ) + = (CH₅O⁺ • 11)

By formula: (CH₅O⁺ • 10CH₄O) + CH₄O = (CH₅O⁺ • 11CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.6	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.8	184.	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

(CH₅O⁺ • 11 Methyl Alcohol ) + = (CH₅O⁺ • 12)

By formula: (CH₅O⁺ • 11CH₄O) + CH₄O = (CH₅O⁺ • 12CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.5	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.7	184.	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

(CH₅O⁺ • 12 Methyl Alcohol ) + = (CH₅O⁺ • 13)

By formula: (CH₅O⁺ • 12CH₄O) + CH₄O = (CH₅O⁺ • 13CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.6	kcal/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.8	184.	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M

(CH₅O⁺ • Methyl Alcohol • ) + = (CH₅O⁺ • 2 • )

By formula: (CH₅O⁺ • CH₄O • H₂O) + CH₄O = (CH₅O⁺ • 2CH₄O • H₂O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.4	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.5	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M

(CH₅O⁺ • ) + Methyl Alcohol = (CH₅O⁺ • • )

By formula: (CH₅O⁺ • H₂O) + CH₄O = (CH₅O⁺ • CH₄O • H₂O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.5	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.	cal/mol*K	N/A	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
11.6	452.	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

(CH₅O⁺ • 2) + Methyl Alcohol = (CH₅O⁺ • • 2)

By formula: (CH₅O⁺ • 2H₂O) + CH₄O = (CH₅O⁺ • CH₄O • 2H₂O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.0	kcal/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.3	cal/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M

CH₆N⁺ + Methyl Alcohol = (CH₆N⁺ • )

By formula: CH₆N⁺ + CH₄O = (CH₆N⁺ • CH₄O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	19.0	kcal/mol	PHPMS	Meot-Ner, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.2	cal/mol*K	PHPMS	Meot-Ner, 1984	gas phase; M

CN^- + Methyl Alcohol = (CN^- • )

By formula: CN^- + CH₄O = (CN^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.70 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	16.6 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B
Δ_rH°	16.5 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	24.3	cal/mol*K	N/A	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8.80 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	10.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B
Δ_rG°	9.2 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

C₂H^- + Methyl Alcohol = C₃H₅O^-

By formula: C₂H^- + CH₄O = C₃H₅O^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.6 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; Anchored to MeOH ΔGacid=375.2; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.90	kcal/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	11.6 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; Anchored to MeOH ΔGacid=375.2; B

+ Methyl Alcohol = ( • )

By formula: C₂H₃O₂^- + CH₄O = (C₂H₃O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.6 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.5 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B

(C₂H₄N⁺ • Methyl Alcohol ) + = (C₂H₄N⁺ • 2)

By formula: (C₂H₄N⁺ • CH₄O) + CH₄O = (C₂H₄N⁺ • 2CH₄O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.9	kcal/mol	PHPMS	El-Shall, Olafsdottir, et al., 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.0	cal/mol*K	PHPMS	El-Shall, Olafsdottir, et al., 1991	gas phase; M

(C₂H₄N⁺ • 2 Methyl Alcohol ) + = (C₂H₄N⁺ • 3)

By formula: (C₂H₄N⁺ • 2CH₄O) + CH₄O = (C₂H₄N⁺ • 3CH₄O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.9	kcal/mol	PHPMS	El-Shall, Olafsdottir, et al., 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.4	cal/mol*K	PHPMS	El-Shall, Olafsdottir, et al., 1991	gas phase; M

(C₂H₄N⁺ • Methyl Alcohol • ) + = (C₂H₄N⁺ • 2 • )

By formula: (C₂H₄N⁺ • CH₄O • C₂H₃N) + CH₄O = (C₂H₄N⁺ • 2CH₄O • C₂H₃N)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.7	kcal/mol	PHPMS	El-Shall, Olafsdottir, et al., 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.1	cal/mol*K	PHPMS	El-Shall, Olafsdottir, et al., 1991	gas phase; M

C₂H₄NO₂^- + Methyl Alcohol = C₃H₈NO₃^-

By formula: C₂H₄NO₂^- + CH₄O = C₃H₈NO₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.00 ± 0.50	kcal/mol	TDAs	Nieckarz, Atkins, et al., 2008	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.5 ± 1.0	kcal/mol	TDAs	Nieckarz, Atkins, et al., 2008	gas phase; B

C₂H₅O⁺ + Methyl Alcohol = (C₂H₅O⁺ • )

By formula: C₂H₅O⁺ + CH₄O = (C₂H₅O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	30.3	kcal/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.9	cal/mol*K	N/A	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	22.3	kcal/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

C₂H₅O^- + Methyl Alcohol = (C₂H₅O^- • )

By formula: C₂H₅O^- + CH₄O = (C₂H₅O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	27.3 ± 2.9	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Δ_rH°	25.6 ± 1.9	kcal/mol	CIDT	DeTuri and Ervin, 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.3	cal/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	18.6 ± 2.0	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
13.4	296.	FA	Mackay, Rakshit, et al., 1982	gas phase; From thermochemical cycle,switching reaction(CH3O-)CH3OH; Caldwell and Kebarle, 1986, Taft, 1983; M

C₂H₇O⁺ + Methyl Alcohol = (C₂H₇O⁺ • )

By formula: C₂H₇O⁺ + CH₄O = (C₂H₇O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26.3	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.1	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

(C₂H₇O⁺ • Methyl Alcohol ) + = (C₂H₇O⁺ • 2)

By formula: (C₂H₇O⁺ • CH₄O) + CH₄O = (C₂H₇O⁺ • 2CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.8	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.9	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

(C₂H₇O⁺ • 2 Methyl Alcohol ) + = (C₂H₇O⁺ • 3)

By formula: (C₂H₇O⁺ • 2CH₄O) + CH₄O = (C₂H₇O⁺ • 3CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.9	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	31.2	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

(C₂H₇O⁺ • 3 Methyl Alcohol ) + = (C₂H₇O⁺ • 4)

By formula: (C₂H₇O⁺ • 3CH₄O) + CH₄O = (C₂H₇O⁺ • 4CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.7	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.8	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

(C₂H₇O⁺ • Methyl Alcohol • ) + = (C₂H₇O⁺ • 2 • )

By formula: (C₂H₇O⁺ • CH₄O • C₂H₆O) + CH₄O = (C₂H₇O⁺ • 2CH₄O • C₂H₆O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.1	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.6	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

(C₂H₇O⁺ • 2 Methyl Alcohol • ) + = (C₂H₇O⁺ • 3 • )

By formula: (C₂H₇O⁺ • 2CH₄O • C₂H₆O) + CH₄O = (C₂H₇O⁺ • 3CH₄O • C₂H₆O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.2	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.5	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

(C₂H₇O⁺ • ) + Methyl Alcohol = (C₂H₇O⁺ • • )

By formula: (C₂H₇O⁺ • C₂H₆O) + CH₄O = (C₂H₇O⁺ • CH₄O • C₂H₆O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.1	kcal/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.6	cal/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n; M

C₂H₇O⁺ + Methyl Alcohol = (C₂H₇O⁺ • )

By formula: C₂H₇O⁺ + CH₄O = (C₂H₇O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	29.6	kcal/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.6	cal/mol*K	N/A	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	21.7	kcal/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

C₂H₇O₂^- + 2 Methyl Alcohol = C₃H₁₁O₃^-

By formula: C₂H₇O₂^- + 2CH₄O = C₃H₁₁O₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.4 ± 1.0	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	13.10 ± 0.50	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B

C₂H₇O₂^- + + Methyl Alcohol = C₂H₉O₃^-

By formula: C₂H₇O₂^- + H₂O + CH₄O = C₂H₉O₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.8 ± 1.0	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.10 ± 0.50	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B

C₂H₉O₃^- + 2 + Methyl Alcohol = C₂H₁₁O₄^-

By formula: C₂H₉O₃^- + 2H₂O + CH₄O = C₂H₁₁O₄^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.2 ± 1.0	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.90 ± 0.50	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B

+ Methyl Alcohol = ( • )

By formula: C₃H₃N₂^- + CH₄O = (C₃H₃N₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.1	kcal/mol	PHPMS	Meot-Ner (Mautner), 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.2	cal/mol*K	PHPMS	Meot-Ner (Mautner), 1988	gas phase; M

C₃H₇O⁺ + Methyl Alcohol = (C₃H₇O⁺ • )

By formula: C₃H₇O⁺ + CH₄O = (C₃H₇O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.1	kcal/mol	PHPMS	Meot-Ner (Mautner), Ross, et al., 1985	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.3	cal/mol*K	PHPMS	Meot-Ner (Mautner), Ross, et al., 1985	gas phase; M

C₃H₇O^- + Methyl Alcohol = (C₃H₇O^- • )

By formula: C₃H₇O^- + CH₄O = (C₃H₇O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26.9 ± 2.9	kcal/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.3	cal/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	18.2 ± 2.0	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

C₃H₉Si⁺ + Methyl Alcohol = (C₃H₉Si⁺ • )

By formula: C₃H₉Si⁺ + CH₄O = (C₃H₉Si⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.2	kcal/mol	PHPMS	Wojtyniak and Stone, 1986	gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.7	cal/mol*K	N/A	Wojtyniak and Stone, 1986	gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
25.3	468.	PHPMS	Wojtyniak and Stone, 1986	gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M

C₃H₉Sn⁺ + Methyl Alcohol = (C₃H₉Sn⁺ • )

By formula: C₃H₉Sn⁺ + CH₄O = (C₃H₉Sn⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.6	kcal/mol	PHPMS	Stone and Splinter, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	32.	cal/mol*K	PHPMS	Stone and Splinter, 1984	gas phase; M

C₃H₁₀N⁺ + Methyl Alcohol = (C₃H₁₀N⁺ • )

By formula: C₃H₁₀N⁺ + CH₄O = (C₃H₁₀N⁺ • CH₄O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.1	kcal/mol	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.0	cal/mol*K	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M

(C₃H₁₀N⁺ • Methyl Alcohol ) + = (C₃H₁₀N⁺ • 2)

By formula: (C₃H₁₀N⁺ • CH₄O) + CH₄O = (C₃H₁₀N⁺ • 2CH₄O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.7	kcal/mol	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.8	cal/mol*K	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M

(C₃H₁₀N⁺ • 2 Methyl Alcohol ) + = (C₃H₁₀N⁺ • 3)

By formula: (C₃H₁₀N⁺ • 2CH₄O) + CH₄O = (C₃H₁₀N⁺ • 3CH₄O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.5	kcal/mol	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.0	cal/mol*K	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M

(C₃H₁₀N⁺ • Methyl Alcohol • ) + = (C₃H₁₀N⁺ • 2 • )

By formula: (C₃H₁₀N⁺ • CH₄O • C₃H₉N) + CH₄O = (C₃H₁₀N⁺ • 2CH₄O • C₃H₉N)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.5	kcal/mol	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M

(C₃H₁₀N⁺ • ) + Methyl Alcohol = (C₃H₁₀N⁺ • • )

By formula: (C₃H₁₀N⁺ • C₃H₉N) + CH₄O = (C₃H₁₀N⁺ • CH₄O • C₃H₉N)

Bond type: Hydrogen bonds of the type NH+-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.6	kcal/mol	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.2	cal/mol*K	PHPMS	El-Shall, Daly, et al., 1992	gas phase; M

C₃H₁₁O₃^- + 3 Methyl Alcohol = C₄H₁₅O₄^-

By formula: C₃H₁₁O₃^- + 3CH₄O = C₄H₁₅O₄^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.0 ± 1.0	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.20 ± 0.50	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B

C₃H₁₁O₃^- + + 2 Methyl Alcohol = C₃H₁₃O₄^-

By formula: C₃H₁₁O₃^- + H₂O + 2CH₄O = C₃H₁₃O₄^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.8 ± 1.0	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.40 ± 0.50	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B

C₄H₂O₃^- + Methyl Alcohol = (C₄H₂O₃^- • )

By formula: C₄H₂O₃^- + CH₄O = (C₄H₂O₃^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.7 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.7	343.	PHPMS	Chowdhury, 1987	gas phase; M

+ Methyl Alcohol = ( • )

By formula: C₄H₄N^- + CH₄O = (C₄H₄N^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.6 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.5	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B

C₄H₉O^- + Methyl Alcohol = (C₄H₉O^- • )

By formula: C₄H₉O^- + CH₄O = (C₄H₉O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.5 ± 1.0	kcal/mol	TDEq	Meot-Ner and Sieck, 1986	gas phase; B,M
Δ_rH°	23.4 ± 2.2	kcal/mol	CIDT	DeTuri and Ervin, 1999	gas phase; B
Δ_rH°	26.0 ± 2.5	kcal/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.9	cal/mol*K	N/A	Meot-Ner and Sieck, 1986	gas phase; Entropy change calculated or estimated; M
Δ_rS°	29.3	cal/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.20	kcal/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	17.1 ± 1.6	kcal/mol	TDEq	Meot-Ner and Sieck, 1986	gas phase; B
Δ_rG°	17.3 ± 1.6	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M

C₄H₁₁O₂⁺ + Methyl Alcohol = (C₄H₁₁O₂⁺ • )

By formula: C₄H₁₁O₂⁺ + CH₄O = (C₄H₁₁O₂⁺ • CH₄O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.0	kcal/mol	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.3	cal/mol*K	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M

(C₄H₁₁O₂⁺ • Methyl Alcohol ) + = (C₄H₁₁O₂⁺ • 2)

By formula: (C₄H₁₁O₂⁺ • CH₄O) + CH₄O = (C₄H₁₁O₂⁺ • 2CH₄O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.4	kcal/mol	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.6	cal/mol*K	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M

(C₄H₁₁O₂⁺ • 2 Methyl Alcohol ) + = (C₄H₁₁O₂⁺ • 3)

By formula: (C₄H₁₁O₂⁺ • 2CH₄O) + CH₄O = (C₄H₁₁O₂⁺ • 3CH₄O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.6	kcal/mol	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.0	cal/mol*K	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M

(C₄H₁₁O₂⁺ • 3 Methyl Alcohol ) + = (C₄H₁₁O₂⁺ • 4)

By formula: (C₄H₁₁O₂⁺ • 3CH₄O) + CH₄O = (C₄H₁₁O₂⁺ • 4CH₄O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.2	kcal/mol	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.3	cal/mol*K	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M

(C₄H₁₁O₂⁺ • 4 Methyl Alcohol ) + = (C₄H₁₁O₂⁺ • 5)

By formula: (C₄H₁₁O₂⁺ • 4CH₄O) + CH₄O = (C₄H₁₁O₂⁺ • 5CH₄O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.2	kcal/mol	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.2	cal/mol*K	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M

(C₄H₁₁O₂⁺ • 5 Methyl Alcohol ) + = (C₄H₁₁O₂⁺ • 6)

By formula: (C₄H₁₁O₂⁺ • 5CH₄O) + CH₄O = (C₄H₁₁O₂⁺ • 6CH₄O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.9	kcal/mol	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.0	cal/mol*K	PHPMS	Meot-Ner (Mautner), Sieck, et al., 1994	gas phase; M

C₄H₁₅O₄^- + 4 Methyl Alcohol = C₅H₁₉O₅^-

By formula: C₄H₁₅O₄^- + 4CH₄O = C₅H₁₉O₅^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.4 ± 1.0	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.70 ± 0.50	kcal/mol	TDAs	Meot-Ner(Mautner), 1986	gas phase; B

+ Methyl Alcohol = ( • )

By formula: C₅H₅^- + CH₄O = (C₅H₅^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.2 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.9 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B

C₅H₁₁O^- + Methyl Alcohol = (C₅H₁₁O^- • )

By formula: C₅H₁₁O^- + CH₄O = (C₅H₁₁O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.7 ± 2.9	kcal/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17.0 ± 2.0	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

C₆F₄O₂^- + Methyl Alcohol = (C₆F₄O₂^- • )

By formula: C₆F₄O₂^- + CH₄O = (C₆F₄O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.0 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.0	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄ClNO₂^- + Methyl Alcohol = (C₆H₄ClNO₂^- • )

By formula: C₆H₄ClNO₂^- + CH₄O = (C₆H₄ClNO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.4 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
5.4	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄ClNO₂^- + Methyl Alcohol = (C₆H₄ClNO₂^- • )

By formula: C₆H₄ClNO₂^- + CH₄O = (C₆H₄ClNO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.4 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
5.4	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄ClNO₂^- + Methyl Alcohol = (C₆H₄ClNO₂^- • )

By formula: C₆H₄ClNO₂^- + CH₄O = (C₆H₄ClNO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.6 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
5.6	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄FNO₂^- + Methyl Alcohol = (C₆H₄FNO₂^- • )

By formula: C₆H₄FNO₂^- + CH₄O = (C₆H₄FNO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.8 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
5.8	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄FNO₂^- + Methyl Alcohol = (C₆H₄FNO₂^- • )

By formula: C₆H₄FNO₂^- + CH₄O = (C₆H₄FNO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.0 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.0	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄FNO₂^- + Methyl Alcohol = (C₆H₄FNO₂^- • )

By formula: C₆H₄FNO₂^- + CH₄O = (C₆H₄FNO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.8 ± 2.0	kcal/mol	N/A	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.8	cal/mol*K	PHPMS	Chowdhury, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.6 ± 2.0	kcal/mol	TDAs	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₆H₄NO₃^- + Methyl Alcohol = (C₆H₄NO₃^- • )

By formula: C₆H₄NO₃^- + CH₄O = (C₆H₄NO₃^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.0 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₆H₄NO₃^- + Methyl Alcohol = (C₆H₄NO₃^- • )

By formula: C₆H₄NO₃^- + CH₄O = (C₆H₄NO₃^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.8 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₆H₄N₂O₄^- + Methyl Alcohol = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + CH₄O = (C₆H₄N₂O₄^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.3 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
2.3	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄N₂O₄^- + Methyl Alcohol = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + CH₄O = (C₆H₄N₂O₄^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.3 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.3	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₄N₂O₄^- + Methyl Alcohol = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + CH₄O = (C₆H₄N₂O₄^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.8 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.8	343.	PHPMS	Chowdhury, 1987	gas phase; M

+ Methyl Alcohol = ( • )

By formula: C₆H₄O₂^- + CH₄O = (C₆H₄O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.5 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
5.5	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₆H₅NO₂^- + Methyl Alcohol = (C₆H₅NO₂^- • )

By formula: C₆H₅NO₂^- + CH₄O = (C₆H₅NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.10 ± 0.20	kcal/mol	TDAs	Sieck, 1985	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.1	cal/mol*K	PHPMS	Sieck, 1985	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.30 ± 0.40	kcal/mol	TDAs	Sieck, 1985	gas phase; B
Δ_rG°	6.3 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.3	343.	PHPMS	Chowdhury, 1987	gas phase; M

+ Methyl Alcohol = ( • )

By formula: C₆H₅S^- + CH₄O = (C₆H₅S^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.4	kcal/mol	PHPMS	Sieck and Meot-ner, 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.0	cal/mol*K	PHPMS	Sieck and Meot-ner, 1989	gas phase; M

+ Methyl Alcohol = C₇H₉OS^-

By formula: C₆H₅S^- + CH₄O = C₇H₉OS^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.40 ± 0.10	kcal/mol	TDAs	Sieck and Meot-ner, 1989	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.50 ± 0.30	kcal/mol	TDAs	Sieck and Meot-ner, 1989	gas phase; B

C₆H₉^- + Methyl Alcohol = C₇H₁₃O^-

By formula: C₆H₉^- + CH₄O = C₇H₁₃O^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.8 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; Anchored to MeOH ΔGacid=375.2; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11.50	kcal/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	10.7 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; Anchored to MeOH ΔGacid=375.2; B

C₆H₁₁S₂^- + Methyl Alcohol = (C₆H₁₁S₂^- • )

By formula: C₆H₁₁S₂^- + CH₄O = (C₆H₁₁S₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.9 ± 2.5	kcal/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	13.2 ± 1.6	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

+ Methyl Alcohol = ( • )

By formula: C₇F₁₄^- + CH₄O = (C₇F₁₄^- • CH₄O)

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.4	308.	PHPMS	Knighton, Zook, et al., 1990	gas phase; M

C₇H₄F₃NO₂^- + Methyl Alcohol = (C₇H₄F₃NO₂^- • )

By formula: C₇H₄F₃NO₂^- + CH₄O = (C₇H₄F₃NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.6 ± 2.0	kcal/mol	N/A	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.9 ± 1.6	kcal/mol	TDAs	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₇H₄N₂O₂^- + Methyl Alcohol = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + CH₄O = (C₇H₄N₂O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.7 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.7	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + Methyl Alcohol = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + CH₄O = (C₇H₄N₂O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.5 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.5	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₄N₂O₂^- + Methyl Alcohol = (C₇H₄N₂O₂^- • )

By formula: C₇H₄N₂O₂^- + CH₄O = (C₇H₄N₂O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.9 ± 2.0	kcal/mol	N/A	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.6	cal/mol*K	PHPMS	Chowdhury, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.1 ± 2.0	kcal/mol	TDAs	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₇H₇NO₂^- + Methyl Alcohol = (C₇H₇NO₂^- • )

By formula: C₇H₇NO₂^- + CH₄O = (C₇H₇NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.3	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₇NO₂^- + Methyl Alcohol = (C₇H₇NO₂^- • )

By formula: C₇H₇NO₂^- + CH₄O = (C₇H₇NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.5 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.5	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₇NO₂^- + Methyl Alcohol = (C₇H₇NO₂^- • )

By formula: C₇H₇NO₂^- + CH₄O = (C₇H₇NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.4 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₇H₇NO₃^- + Methyl Alcohol = (C₇H₇NO₃^- • )

By formula: C₇H₇NO₃^- + CH₄O = (C₇H₇NO₃^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.1 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.1	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₇H₇NO₃^- + Methyl Alcohol = (C₇H₇NO₃^- • )

By formula: C₇H₇NO₃^- + CH₄O = (C₇H₇NO₃^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.3 ± 2.0	kcal/mol	N/A	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.4	cal/mol*K	PHPMS	Chowdhury, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3 ± 2.0	kcal/mol	TDAs	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

C₈H₅^- + Methyl Alcohol = (C₈H₅^- • )

By formula: C₈H₅^- + CH₄O = (C₈H₅^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.5 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; B
Δ_rH°	21.4 ± 2.9	kcal/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.3	cal/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11.0 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; B
Δ_rG°	12.7 ± 2.0	kcal/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

C₈H₉NO₂^- + Methyl Alcohol = (C₈H₉NO₂^- • )

By formula: C₈H₉NO₂^- + CH₄O = (C₈H₉NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
6.3	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₈H₁₇O₄⁺ + Methyl Alcohol = (C₈H₁₇O₄⁺ • )

By formula: C₈H₁₇O₄⁺ + CH₄O = (C₈H₁₇O₄⁺ • CH₄O)

Bond type: Hydrogen bonds with polydentate bonding in positive ions

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	19.5	kcal/mol	PHPMS	Sharma and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	34.0	cal/mol*K	PHPMS	Sharma and Kebarle, 1984	gas phase; M

C₉H₇^- + Methyl Alcohol = C₁₀H₁₁O^-

By formula: C₉H₇^- + CH₄O = C₁₀H₁₁O^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.6 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; Anchored to MeOH ΔGacid=375.2; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.20	kcal/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	11.1 ± 2.0	kcal/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; Anchored to MeOH ΔGacid=375.2; B

C₁₀H₄Cl₂O₂^- + Methyl Alcohol = (C₁₀H₄Cl₂O₂^- • )

By formula: C₁₀H₄Cl₂O₂^- + CH₄O = (C₁₀H₄Cl₂O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.5 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
1.5	343.	PHPMS	Chowdhury, 1987	gas phase; DG<; M

+ Methyl Alcohol = ( • )

By formula: C₁₀H₆O₂^- + CH₄O = (C₁₀H₆O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.6 ± 1.6	kcal/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.6	343.	PHPMS	Chowdhury, 1987	gas phase; M

C₁₀H₂₁O₅⁺ + Methyl Alcohol = (C₁₀H₂₁O₅⁺ • )

By formula: C₁₀H₂₁O₅⁺ + CH₄O = (C₁₀H₂₁O₅⁺ • CH₄O)

Bond type: Hydrogen bonds with polydentate bonding in positive ions

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.0	kcal/mol	PHPMS	Sharma and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.0	cal/mol*K	PHPMS	Sharma and Kebarle, 1984	gas phase; M

C₁₂H₂₅O₆⁺ + Methyl Alcohol = (C₁₂H₂₅O₆⁺ • )

By formula: C₁₂H₂₅O₆⁺ + CH₄O = (C₁₂H₂₅O₆⁺ • CH₄O)

Bond type: Hydrogen bonds with polydentate bonding in positive ions

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.0	kcal/mol	PHPMS	Sharma and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.5	cal/mol*K	PHPMS	Sharma and Kebarle, 1984	gas phase; M

+ Methyl Alcohol = ( • )

By formula: Cl^- + CH₄O = (Cl^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17. ± 3.	kcal/mol	AVG	N/A	Average of 8 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.6	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M
Δ_rS°	24.1	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	22.0	cal/mol*K	PHPMS	Sieck, 1985	gas phase; M
Δ_rS°	22.9	cal/mol*K	N/A	Larson and McMahon, 1984	gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δ_rS°	14.8	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; Entropy change is questionable; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10.1 ± 0.8	kcal/mol	AVG	N/A	Average of 10 values; Individual data points

( • Methyl Alcohol ) + = ( • 2)

By formula: (Cl^- • CH₄O) + CH₄O = (Cl^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.10 ± 0.40	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	13.70 ± 0.20	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B,M
Δ_rH°	14.1 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	13.00 ± 0.70	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.2	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	22.0	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M
Δ_rS°	19.4	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.30	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	7.10	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	6.8 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	7.20 ± 0.40	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (Cl^- • 2CH₄O) + CH₄O = (Cl^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.50 ± 0.20	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	10.80 ± 0.30	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B,M
Δ_rH°	11.8 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	12.30 ± 0.60	kcal/mol	N/A	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.9	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	22.7	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M
Δ_rS°	23.6	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.06	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	4.00	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	4.9 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	5.20 ± 0.30	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (Cl^- • 3CH₄O) + CH₄O = (Cl^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	10.50	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rH°	11.20 ± 0.60	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.9	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	26.4	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	3.70	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	3.30 ± 0.20	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • 4 Methyl Alcohol ) + = ( • 5)

By formula: (Cl^- • 4CH₄O) + CH₄O = (Cl^- • 5CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.2 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	10.50 ± 0.50	kcal/mol	N/A	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.7	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	25.5	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.7 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	2.90 ± 0.10	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • 5 Methyl Alcohol ) + = ( • 6)

By formula: (Cl^- • 5CH₄O) + CH₄O = (Cl^- • 6CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.9 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.2	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.2 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B

( • 6 Methyl Alcohol ) + = ( • 7)

By formula: (Cl^- • 6CH₄O) + CH₄O = (Cl^- • 7CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.0 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.1	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.0 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B

( • 7 Methyl Alcohol ) + = ( • 8)

By formula: (Cl^- • 7CH₄O) + CH₄O = (Cl^- • 8CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.7	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.7 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B

( • 8 Methyl Alcohol ) + = ( • 9)

By formula: (Cl^- • 8CH₄O) + CH₄O = (Cl^- • 9CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.6	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.4 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B

( • 9 Methyl Alcohol ) + = ( • 10)

By formula: (Cl^- • 9CH₄O) + CH₄O = (Cl^- • 10CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.4 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.1	cal/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.4 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B

( • 10 Methyl Alcohol ) + = ( • 11)

By formula: (Cl^- • 10CH₄O) + CH₄O = (Cl^- • 11CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.3 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; Estimated entropy; single temperature measurement; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	N/A	Hiraoka and Mizuse, 1987	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.3 ± 1.0	kcal/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; Estimated entropy; single temperature measurement; B

( • Methyl Alcohol • ) + = ( • 2 • )

By formula: (Cl^- • CH₄O • H₂O) + CH₄O = (Cl^- • 2CH₄O • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.8	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • ) + Methyl Alcohol = ( • • )

By formula: (Cl^- • H₂O) + CH₄O = (Cl^- • CH₄O • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.2	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.9	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • 2) + Methyl Alcohol = ( • • 2)

By formula: (Cl^- • 2H₂O) + CH₄O = (Cl^- • CH₄O • 2H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.4	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.1	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

+ Methyl Alcohol = ( • )

By formula: Co⁺ + CH₄O = (Co⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	35.4 ± 1.9	kcal/mol	CIDT	Rodgers and Armentrout, 2000	RCD

+ Methyl Alcohol = ( • )

By formula: Cu⁺ + CH₄O = (Cu⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.4	kcal/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.9	kcal/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M

( • Methyl Alcohol ) + = ( • 2)

By formula: (Cu⁺ • CH₄O) + CH₄O = (Cu⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.8	kcal/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3	kcal/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M

+ Methyl Alcohol = CH₃D₄FO^-

By formula: F^- + CH₄O = CH₃D₄FO^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	29.8 ± 2.0	kcal/mol	TDEq	Wilkinson, Szulejko, et al., 1992	gas phase; Reported relative to ROH..F-, 0.5 kcal/mol weaker.; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	22.4 ± 2.0	kcal/mol	TDEq	Wilkinson, Szulejko, et al., 1992	gas phase; Reported relative to ROH..F-, 0.5 kcal/mol weaker.; B

+ Methyl Alcohol = ( • )

By formula: F^- + CH₄O = (F^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	29.6 ± 2.0	kcal/mol	IMRE	Larson and McMahon, 1983	gas phase; B,M
Δ_rH°	29.4 ± 2.2	kcal/mol	CIDT	DeTuri and Ervin, 1999	gas phase; B
Δ_rH°	23.3 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.0	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rS°	22.6	cal/mol*K	N/A	Larson and McMahon, 1983	gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	22.8 ± 2.0	kcal/mol	IMRE	Larson and McMahon, 1983	gas phase; B,M
Δ_rG°	15.8 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (F^- • CH₄O) + CH₄O = (F^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.30 ± 0.30	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	19.3 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.2	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	12.97	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	12.4 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (F^- • 2CH₄O) + CH₄O = (F^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.10 ± 0.60	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	14.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.2	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8.06	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	8.2 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (F^- • 3CH₄O) + CH₄O = (F^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.5	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.5 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 4 Methyl Alcohol ) + = ( • 5)

By formula: (F^- • 4CH₄O) + CH₄O = (F^- • 5CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.9 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.3	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.8 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 5 Methyl Alcohol ) + = ( • 6)

By formula: (F^- • 5CH₄O) + CH₄O = (F^- • 6CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.8	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.6 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 6 Methyl Alcohol ) + = ( • 7)

By formula: (F^- • 6CH₄O) + CH₄O = (F^- • 7CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.5	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.2 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 7 Methyl Alcohol ) + = ( • 8)

By formula: (F^- • 7CH₄O) + CH₄O = (F^- • 8CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.7 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.8	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.7 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 8 Methyl Alcohol ) + = ( • 9)

By formula: (F^- • 8CH₄O) + CH₄O = (F^- • 9CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.2 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.7	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.5 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 9 Methyl Alcohol ) + = ( • 10)

By formula: (F^- • 9CH₄O) + CH₄O = (F^- • 10CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.8 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.1	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.3 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 10 Methyl Alcohol ) + = ( • 11)

By formula: (F^- • 10CH₄O) + CH₄O = (F^- • 11CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.5	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.0 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 11 Methyl Alcohol ) + = ( • 12)

By formula: (F^- • 11CH₄O) + CH₄O = (F^- • 12CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.5 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Hiraoka and Yamabe, 1991	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.1 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B

F₆S^- + Methyl Alcohol = (F₆S^- • )

By formula: F₆S^- + CH₄O = (F₆S^- • CH₄O)

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.5	308.	PHPMS	Knighton, Zook, et al., 1990	gas phase; M

HS^- + Methyl Alcohol = (HS^- • )

By formula: HS^- + CH₄O = (HS^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.0 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11.0 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B

H₄ClO₂^- + Methyl Alcohol + 2 = CH₈ClO₃^-

By formula: H₄ClO₂^- + CH₄O + 2H₂O = CH₈ClO₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.40 ± 0.20	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rH°	11.40 ± 0.30	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; For solvation by MeOH of core ion; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.80	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	6.00	kcal/mol	TDAs	Evans and Keesee, 1991	gas phase; For solvation by MeOH of core ion; B

+ Methyl Alcohol = ( • )

By formula: I^- + CH₄O = (I^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.90 ± 0.20	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	11.3 ± 1.0	kcal/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Δ_rH°	11.2	kcal/mol	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rH°	11.	kcal/mol	PHPMS	Caldwell, Masucci, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.1	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rS°	17.8	cal/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.76	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	6.0 ± 1.0	kcal/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B
Δ_rG°	5.7 ± 2.0	kcal/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..I- of Caldwell and Kebarle, 1984; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (I^- • CH₄O) + CH₄O = (I^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.50 ± 0.20	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	11.1 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.6	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.25	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	4.4 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (I^- • 2CH₄O) + CH₄O = (I^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.70 ± 0.60	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.4	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.41	kcal/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	3.1 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (I^- • 3CH₄O) + CH₄O = (I^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.7 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.3 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 4 Methyl Alcohol ) + = ( • 5)

By formula: (I^- • 4CH₄O) + CH₄O = (I^- • 5CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.1	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.5 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 5 Methyl Alcohol ) + = ( • 6)

By formula: (I^- • 5CH₄O) + CH₄O = (I^- • 6CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.6 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.4	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.4 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 6 Methyl Alcohol ) + = ( • 7)

By formula: (I^- • 6CH₄O) + CH₄O = (I^- • 7CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.4 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.0	cal/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.1 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 7 Methyl Alcohol ) + = ( • 8)

By formula: (I^- • 7CH₄O) + CH₄O = (I^- • 8CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.1 ± 1.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.	cal/mol*K	N/A	Hiraoka and Yamabe, 1991	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	0.8 ± 2.0	kcal/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B

+ Methyl Alcohol = ( • )

By formula: K⁺ + CH₄O = (K⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.9	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; switching reaction,n(K+)H2O; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	31.6	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; switching reaction,n(K+)H2O; M

( • Methyl Alcohol ) + = ( • 2)

By formula: (K⁺ • CH₄O) + CH₄O = (K⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.0	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (K⁺ • 2CH₄O) + CH₄O = (K⁺ • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.5	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (K⁺ • 3CH₄O) + CH₄O = (K⁺ • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.5	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	29.	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • Methyl Alcohol • ) + = ( • 2 • )

By formula: (K⁺ • CH₄O • H₂O) + CH₄O = (K⁺ • 2CH₄O • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.5	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.3	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • 2 Methyl Alcohol • ) + = ( • 3 • )

By formula: (K⁺ • 2CH₄O • H₂O) + CH₄O = (K⁺ • 3CH₄O • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.5	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.6	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • ) + Methyl Alcohol = ( • • )

By formula: (K⁺ • H₂O) + CH₄O = (K⁺ • CH₄O • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	19.6	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	32.5	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M

( • 2) + Methyl Alcohol = ( • • 2)

By formula: (K⁺ • 2H₂O) + CH₄O = (K⁺ • CH₄O • 2H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.6	kcal/mol	HPMS	Evans and Keesee, 1991	gas phase; switching reaction,n(K+)3H2O; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.9	cal/mol*K	HPMS	Evans and Keesee, 1991	gas phase; switching reaction,n(K+)3H2O; M

+ Methyl Alcohol = ( • )

By formula: Li⁺ + CH₄O = (Li⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	36.8 ± 1.9	kcal/mol	CIDT	Rodgers and Armentrout, 2000	RCD
Δ_rH°	38.1	kcal/mol	ICR	Woodin and Beauchamp, 1978	gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Δ_rH°	38.	kcal/mol	ICR	Staley and Beauchamp, 1975	gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	N/A	Woodin and Beauchamp, 1978	gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	30.3	kcal/mol	ICR	Woodin and Beauchamp, 1978	gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M

+ Methyl Alcohol = ( • )

By formula: Mg⁺ + CH₄O = (Mg⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	34.7 ± 1.6	kcal/mol	CIDT	Andersen, Muntean, et al., 2000	RCD
Δ_rH°	61. ± 5.	kcal/mol	PDiss	Operti, Tews, et al., 1988	gas phase; M

( • Methyl Alcohol ) + = ( • 2)

By formula: (Mg⁺ • CH₄O) + CH₄O = (Mg⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	28.8 ± 1.6	kcal/mol	CIDT	Andersen, Muntean, et al., 2000	RCD

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (Mg⁺ • 2CH₄O) + CH₄O = (Mg⁺ • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.9 ± 2.1	kcal/mol	CIDT	Andersen, Muntean, et al., 2000	RCD

+ Methyl Alcohol = ( • )

By formula: NO₂^- + CH₄O = (NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.40 ± 0.20	kcal/mol	TDAs	Sieck, 1985	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.8	cal/mol*K	PHPMS	Sieck, 1985	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.70 ± 0.40	kcal/mol	TDAs	Sieck, 1985	gas phase; B

+ Methyl Alcohol = ( • )

By formula: Na⁺ + CH₄O = (Na⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.2 ± 1.3	kcal/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	21.9 ± 1.4	kcal/mol	CIDT	Armentrout and Rodgers, 2000	RCD
Δ_rH°	24.0 ± 0.2	kcal/mol	HPMS	Hoyau, Norrman, et al., 1999	RCD
Δ_rH°	26.6 ± 0.2	kcal/mol	HPMS	Guo, Conklin, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20500.	cal/mol*K	HPMS	Hoyau, Norrman, et al., 1999	RCD
Δ_rS°	24.3	cal/mol*K	HPMS	Guo, Conklin, et al., 1989	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
17.3	298.	IMRE	McMahon and Ohanessian, 2000	Anchor alanine=39.89; RCD

( • Methyl Alcohol ) + = ( • 2)

By formula: (Na⁺ • CH₄O) + CH₄O = (Na⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.5 ± 1.4	kcal/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	21.4 ± 1.6	kcal/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	20.5 ± 1.6	kcal/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	20.2 ± 0.2	kcal/mol	HPMS	Guo, Conklin, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.7	cal/mol*K	HPMS	Guo, Conklin, et al., 1989	gas phase; M

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (Na⁺ • 2CH₄O) + CH₄O = (Na⁺ • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.4 ± 0.4	kcal/mol	HPMS	Guo, Conklin, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.1	cal/mol*K	HPMS	Guo, Conklin, et al., 1989	gas phase; M

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (Na⁺ • 3CH₄O) + CH₄O = (Na⁺ • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.7 ± 0.2	kcal/mol	HPMS	Guo, Conklin, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.0	cal/mol*K	HPMS	Guo, Conklin, et al., 1989	gas phase; M

+ Methyl Alcohol = ( • )

By formula: O₂^- + CH₄O = (O₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	19.10	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.9	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	12.50	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (O₂^- • CH₄O) + CH₄O = (O₂^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.50 ± 0.80	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8.10 ± 0.40	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (O₂^- • 2CH₄O) + CH₄O = (O₂^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.50 ± 0.70	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.9	cal/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.20 ± 0.30	kcal/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

+ Methyl Alcohol = ( • )

By formula: Pb⁺ + CH₄O = (Pb⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.3 ± 0.2	kcal/mol	HPMS	Guo and Castleman, 1990	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.3	cal/mol*K	HPMS	Guo and Castleman, 1990	gas phase; M

( • Methyl Alcohol ) + = ( • 2)

By formula: (Pb⁺ • CH₄O) + CH₄O = (Pb⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.2 ± 0.3	kcal/mol	HPMS	Guo and Castleman, 1990	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.6	cal/mol*K	HPMS	Guo and Castleman, 1990	gas phase; M

References

Go To: Top, Ion clustering data, Notes

Bogdanov, Peschke, et al., 1999
Bogdanov, B.; Peschke, M.; Tonner, D.S.; Szulejko, J.E.; McMahon, T.B., Stepwise solvation of halides by alcohol molecules in the gas phase, Int. J. Mass Spectrom., 1999, 187, 707-725, https://doi.org/10.1016/S1387-3806(98)14180-5 . [all data]

Hiraoka and Yamabe, 1991
Hiraoka, K.; Yamabe, S., Solvation of Halide Ions with CH3OH in the gas Phase, Int. J. Mass Spectrom. Ion Proc., 1991, 109, 133, https://doi.org/10.1016/0168-1176(91)85101-Q . [all data]

Tanabe, Morgon, et al., 1996
Tanabe, F.K.J.; Morgon, N.H.; Riveros, J.M., Relative Bromide and Iodide Affinity of Simple Solvent Molecules Determined by FT-ICR, J. Phys. Chem., 1996, 100, 8, 2862-2866, https://doi.org/10.1021/jp952290p . [all data]

Hiraoka, Mizure, et al., 1988
Hiraoka, K.; Mizure, S.; Yamabe, S.; Nakatsuji, Y., Gas Phase Clustering Reactions of CN^- and CH₂CN^- with MeCN, Chem. Phys. Lett., 1988, 148, 6, 497, https://doi.org/10.1016/0009-2614(88)80320-8 . [all data]

Meot-ner and Sieck, 1986
Meot-ner, M.; Sieck, L.W., Relative acidities of water and methanol, and the stabilities of the dimer adducts, J. Phys. Chem., 1986, 90, 6687. [all data]

Meot-Ner and Sieck, 1986
Meot-Ner, M.; Sieck, L.W., The ionic hydrogen bond and ion solvation. 5. OH...O^- bonds. Gas phase solvation and clustering of alkoxide and carboxylate anions, J. Am. Chem. Soc., 1986, 108, 7525. [all data]

Paul and Kebarle, 1990
Paul, G.J.C.; Kebarle, P., Thermodynamics of the Association Reactions OH- - H2O = HOHOH- and CH3O- - CH3OH = CH3OHOCH3- in the Gas Phase, J. Phys. Chem., 1990, 94, 12, 5184, https://doi.org/10.1021/j100375a076 . [all data]

Caldwell, Rozeboom, et al., 1984
Caldwell, G.; Rozeboom, M.D.; Kiplinger, J.P.; Bartmess, J.E., Anion-alcohol hydrogen bond strengths in the gas phase, J. Am. Chem. Soc., 1984, 106, 4660. [all data]

Moylan, Dodd, et al., 1985
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Notes

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Symbols used in this document:

T Temperature

Δ_rG° Free energy of reaction at standard conditions

Δ_rH° Enthalpy of reaction at standard conditions

Δ_rS° Entropy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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T	Temperature
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions