MeO anion


Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

CH3O- + Hydrogen cation = Methyl Alcohol

By formula: CH3O- + H+ = CH4O

Quantity Value Units Method Reference Comment
Δr382. ± 2.kcal/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Δr376.02 ± 0.62kcal/molH-TSNee, Osterwalder, et al., 2006gas phase; B
Δr376.04 ± 0.55kcal/molH-TSOsborn, Leahy, et al., 1998gas phase; B
Δr374.0 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B
Δr374.6 ± 2.1kcal/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.; B
Δr375.10 ± 0.60kcal/molTDEqMeot-ner and Sieck, 1986gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O; B

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

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

Quantity Value Units Method Reference Comment
Δr29.3 ± 1.0kcal/molTDAsPaul and Kebarle, 1990gas phase; B,M
Δr28.80 ± 0.30kcal/molTDAsMeot-ner and Sieck, 1986gas phase; B,M
Δr29.4 ± 2.5kcal/molTDAsCaldwell, Rozeboom, et al., 1984gas 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
Δr19.0 ± 2.0kcal/molN/AMoylan, Dodd, et al., 1985gas phase; B
Quantity Value Units Method Reference Comment
Δr31.8cal/mol*KPHPMSPaul and Kebarle, 1990gas phase; M
Δr26.7cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr20.30kcal/molIMREMustanir, Matsuoka, et al., 2006gas phase; B
Δr19.8 ± 1.0kcal/molTDAsPaul and Kebarle, 1990gas phase; B
Δr20.80 ± 0.50kcal/molTDAsMeot-ner and Sieck, 1986gas phase; B
Δr20.3 ± 1.6kcal/molTDAsCaldwell, Rozeboom, et al., 1984gas 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

ΔrG° (kcal/mol) T (K) Method Reference Comment
19.1296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M

CH3O- + Water = (CH3O- • Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr25.3 ± 2.2kcal/molCIDTDeTuri and Ervin, 1999gas phase; B
Δr23.9kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M,B,M
Quantity Value Units Method Reference Comment
Δr22.9cal/mol*KPHPMSMeot-ner and Sieck, 1986gas phase; M
Δr22.9cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr17.00 ± 0.30kcal/molTDAsMeot-ner and Sieck, 1986gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
15.4296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)H2O, DG>; Meot-Ner(Mautner), 1986; M

(CH3O- • 4294967295Formaldehyde) + Formaldehyde = CH3O-

By formula: (CH3O- • 4294967295CH2O) + CH2O = CH3O-

Quantity Value Units Method Reference Comment
Δr39.90 ± 0.51kcal/molN/ANee, Osterwalder, et al., 2006gas phase; B
Δr40.8 ± 1.1kcal/molTherOsborn, Leahy, et al., 1998gas phase; B
Δr41.8 ± 2.2kcal/molTherBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B

(CH3O- • 2Water) + Water = (CH3O- • 3Water)

By formula: (CH3O- • 2H2O) + H2O = (CH3O- • 3H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr14.8kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr24.4cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
7.9296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)3H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • Water) + Water = (CH3O- • 2Water)

By formula: (CH3O- • H2O) + H2O = (CH3O- • 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr19.2kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr25.3cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
8.2296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)2H2O; Meot-Ner(Mautner), 1986; M

CH3O- + Methanol-D4 = C2H4D7O2-

By formula: CH3O- + CD4O = C2H4D7O2-

Quantity Value Units Method Reference Comment
Δr28.3 ± 1.0kcal/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B
Quantity Value Units Method Reference Comment
Δr20.7 ± 1.0kcal/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B

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

By formula: (CH3O- • H2O • CH4O) + H2O = (CH3O- • 2H2O • CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr15.2kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr27.7cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

By formula: (CH3O- • 2CH4O) + H2O = (CH3O- • H2O • 2CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr13.8kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr25.0cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr17.8kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr25.9cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 3Water) + Water = (CH3O- • 4Water)

By formula: (CH3O- • 3H2O) + H2O = (CH3O- • 4H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr11.0kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr20.0cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

CH3O- + Fluoroform = C2H4F3O-

By formula: CH3O- + CHF3 = C2H4F3O-

Quantity Value Units Method Reference Comment
Δr23.5 ± 1.0kcal/molIMREChabinyc and Brauman, 1998gas phase; B
Quantity Value Units Method Reference Comment
Δr16.6 ± 1.0kcal/molIMREChabinyc and Brauman, 1998gas phase; B

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

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

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
13.7296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)2H2O; Meot-Ner(Mautner), 1986; M

CH3O- + Boron trifluoride = (CH3O- • Boron trifluoride)

By formula: CH3O- + BF3 = (CH3O- • BF3)

Quantity Value Units Method Reference Comment
Δr>22.0 ± 2.0kcal/molIMRBBlair, Isolani, et al., 1973gas phase; MeOH..MeO- + BF3 ->. Computations indicate dHaff ca. 80 kcal/mol; B

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

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

Quantity Value Units Method Reference Comment
Δr15.0kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr26.3cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

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

Quantity Value Units Method Reference Comment
Δr11.4kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr22.4cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

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

Quantity Value Units Method Reference Comment
Δr21.4kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr27.8cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

CH3O- + Trifluorophenylsilane = C7H8F3OSi-

By formula: CH3O- + C6H5F3Si = C7H8F3OSi-

Quantity Value Units Method Reference Comment
Δr76.6 ± 5.9kcal/molCIDTKrouse, Lardin, et al., 2003gas phase; B

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
1.5690 ± 0.0019LPESNee, Osterwalder, et al., 2006 
1.5720 ± 0.0040LPESRamond, Davico, et al., 2000 
1.5680 ± 0.0050LPESOsborn, Leahy, et al., 1998 
1.685 ± 0.094D-EABartmess, Scott, et al., 1979The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale
1.570 ± 0.022LPESEngleking, Ellison, et al., 1978Confirmed by high level calculations: Hiraoka, Shimizu, et al., 1995
1.591 ± 0.040PDJanousek, Zimmerman, et al., 1978 
<1.591 ± 0.039PDReed and Brauman, 1975 
2.59998EIAETsuda and Hamill, 1964From MeOMe
0.3816SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.

Protonation reactions

CH3O- + Hydrogen cation = Methyl Alcohol

By formula: CH3O- + H+ = CH4O

Quantity Value Units Method Reference Comment
Δr382. ± 2.kcal/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Δr376.02 ± 0.62kcal/molH-TSNee, Osterwalder, et al., 2006gas phase
Δr376.04 ± 0.55kcal/molH-TSOsborn, Leahy, et al., 1998gas phase
Δr374.0 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale
Δr374.6 ± 2.1kcal/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Δr375.10 ± 0.60kcal/molTDEqMeot-ner and Sieck, 1986gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O

Ion clustering data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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

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

CH3O- + Boron trifluoride = (CH3O- • Boron trifluoride)

By formula: CH3O- + BF3 = (CH3O- • BF3)

Quantity Value Units Method Reference Comment
Δr>22.0 ± 2.0kcal/molIMRBBlair, Isolani, et al., 1973gas phase; MeOH..MeO- + BF3 ->. Computations indicate dHaff ca. 80 kcal/mol; B

CH3O- + Methanol-D4 = C2H4D7O2-

By formula: CH3O- + CD4O = C2H4D7O2-

Quantity Value Units Method Reference Comment
Δr28.3 ± 1.0kcal/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B
Quantity Value Units Method Reference Comment
Δr20.7 ± 1.0kcal/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B

CH3O- + Fluoroform = C2H4F3O-

By formula: CH3O- + CHF3 = C2H4F3O-

Quantity Value Units Method Reference Comment
Δr23.5 ± 1.0kcal/molIMREChabinyc and Brauman, 1998gas phase; B
Quantity Value Units Method Reference Comment
Δr16.6 ± 1.0kcal/molIMREChabinyc and Brauman, 1998gas phase; B

(CH3O- • 4294967295Formaldehyde) + Formaldehyde = CH3O-

By formula: (CH3O- • 4294967295CH2O) + CH2O = CH3O-

Quantity Value Units Method Reference Comment
Δr39.90 ± 0.51kcal/molN/ANee, Osterwalder, et al., 2006gas phase; B
Δr40.8 ± 1.1kcal/molTherOsborn, Leahy, et al., 1998gas phase; B
Δr41.8 ± 2.2kcal/molTherBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B

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

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

Quantity Value Units Method Reference Comment
Δr29.3 ± 1.0kcal/molTDAsPaul and Kebarle, 1990gas phase; B,M
Δr28.80 ± 0.30kcal/molTDAsMeot-ner and Sieck, 1986gas phase; B,M
Δr29.4 ± 2.5kcal/molTDAsCaldwell, Rozeboom, et al., 1984gas 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
Δr19.0 ± 2.0kcal/molN/AMoylan, Dodd, et al., 1985gas phase; B
Quantity Value Units Method Reference Comment
Δr31.8cal/mol*KPHPMSPaul and Kebarle, 1990gas phase; M
Δr26.7cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr20.30kcal/molIMREMustanir, Matsuoka, et al., 2006gas phase; B
Δr19.8 ± 1.0kcal/molTDAsPaul and Kebarle, 1990gas phase; B
Δr20.80 ± 0.50kcal/molTDAsMeot-ner and Sieck, 1986gas phase; B
Δr20.3 ± 1.6kcal/molTDAsCaldwell, Rozeboom, et al., 1984gas 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

ΔrG° (kcal/mol) T (K) Method Reference Comment
19.1296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M

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

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

Quantity Value Units Method Reference Comment
Δr21.4kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr27.8cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

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

Quantity Value Units Method Reference Comment
Δr15.0kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr26.3cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

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

Quantity Value Units Method Reference Comment
Δr11.4kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr22.4cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr17.8kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr25.9cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

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

By formula: (CH3O- • 2CH4O) + H2O = (CH3O- • H2O • 2CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr13.8kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr25.0cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

CH3O- + Trifluorophenylsilane = C7H8F3OSi-

By formula: CH3O- + C6H5F3Si = C7H8F3OSi-

Quantity Value Units Method Reference Comment
Δr76.6 ± 5.9kcal/molCIDTKrouse, Lardin, et al., 2003gas phase; B

CH3O- + Water = (CH3O- • Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr25.3 ± 2.2kcal/molCIDTDeTuri and Ervin, 1999gas phase; B
Δr23.9kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M,B,M
Quantity Value Units Method Reference Comment
Δr22.9cal/mol*KPHPMSMeot-ner and Sieck, 1986gas phase; M
Δr22.9cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr17.00 ± 0.30kcal/molTDAsMeot-ner and Sieck, 1986gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
15.4296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)H2O, DG>; Meot-Ner(Mautner), 1986; M

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

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

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
13.7296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)2H2O; Meot-Ner(Mautner), 1986; M

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

By formula: (CH3O- • H2O • CH4O) + H2O = (CH3O- • 2H2O • CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr15.2kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr27.7cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • Water) + Water = (CH3O- • 2Water)

By formula: (CH3O- • H2O) + H2O = (CH3O- • 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr19.2kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr25.3cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
8.2296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)2H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • 2Water) + Water = (CH3O- • 3Water)

By formula: (CH3O- • 2H2O) + H2O = (CH3O- • 3H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr14.8kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr24.4cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
7.9296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)3H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • 3Water) + Water = (CH3O- • 4Water)

By formula: (CH3O- • 3H2O) + H2O = (CH3O- • 4H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr11.0kcal/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr20.0cal/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Vibrational and/or electronic energy levels

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Marilyn E. Jacox

State:   ?


 Energy 
 (cm-1
 Med.   Transition   λmin 
 (nm) 
 λmax 
 (nm) 
 References

Td = 12655 ± 15 gas Engleking, Ellison, et al., 1978
Osborn, Leahy, et al., 1998, 2
Ramond, Davico, et al., 2000, 2
Nee, Osterwalder, et al., 2006

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 3 1113 gas TPE Nee, Osterwalder, et al., 2006
e 6 1120 gas TPE Nee, Osterwalder, et al., 2006

Additional references: Jacox, 1994, page 242; Jacox, 2003, page 260; Oakes, Harding, et al., 1985

Notes

dPhotodissociation threshold

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References