CN anion

Formula: CN^-
Molecular weight: 26.0179
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Other data available:
- Reaction thermochemistry data: reactions 51 to 66
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Reaction thermochemistry data

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

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

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Reactions 1 to 50

CN^- + = (CN^- • )

By formula: CN^- + H₂O = (CN^- • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.70 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	14.6 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B,B,M,M
Δ_rH°	13.80	kcal/mol	TDAs	Payzant, Yamdagni, et al., 1971	gas phase; B,M
Δ_rH°	14.6	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.6	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	18.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	19.6	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	19.6	cal/mol*K	PHPMS	Meot-ner, 1988	gas phase; M
Δ_rS°	19.8	cal/mol*K	HPMS	Payzant, Yamdagni, et al., 1971	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.30 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	8.7 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	8.7 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B
Δ_rG°	7.90	kcal/mol	TDAs	Payzant, Yamdagni, et al., 1971	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + CHN = (CN^- • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rH°	20.0 ± 2.0	kcal/mol	Est	Larson and McMahon, 1984	gas phase; B
Δ_rH°	20.7	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	20.7	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.6	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	20.6	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	20.6	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	26.9	cal/mol*K	N/A	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(H2O), Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.5 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	13.7 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rG°	14.5 ± 1.6	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + C₂H₃N = (CN^- • C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.8 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Δ_rH°	16.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rH°	15.70	kcal/mol	TDAs	Hiraoka, Mizure, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.7	cal/mol*K	PHPMS	Hiraoka, Mizure, et al., 1988	gas phase; M
Δ_rS°	14.2	cal/mol*K	PHPMS	Meot-ner, 1988, 2	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°	9.5 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	9.1 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rG°	9.20	kcal/mol	TDAs	Hiraoka, Mizure, et al., 1988	gas phase; B

CN^- + = (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, 2	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, 2	gas phase; B
Δ_rG°	9.2 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + =

By formula: CN^- + H⁺ = CHN

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	349.8 ± 1.0	kcal/mol	CIDT	Akin and Ervin, 2006	gas phase; B
Δ_rH°	350.50 ± 0.17	kcal/mol	D-EA	Bradforth, Kim, et al., 1993	gas phase; B
Δ_rH°	351.1 ± 2.1	kcal/mol	G+TS	Bartmess, Scott, et al., 1979	gas phase; value altered from reference due to change in acidity scale; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	342.5 ± 1.1	kcal/mol	H-TS	Akin and Ervin, 2006	gas phase; B
Δ_rG°	343.17 ± 0.27	kcal/mol	H-TS	Bradforth, Kim, et al., 1993	gas phase; B
Δ_rG°	343.8 ± 2.0	kcal/mol	IMRE	Bartmess, Scott, et al., 1979	gas phase; value altered from reference due to change in acidity scale; B

(CN^- • 2) + = (CN^- • 3)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.7 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Stated EA is Vertical Detachment Energy, at 12 K. At 298 K, measured Vertical Detachment Energy = 5.50±0.10 eV; B,M
Δ_rH°	10.7	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	19.8	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.8 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Stated EA is Vertical Detachment Energy, at 12 K. At 298 K, measured Vertical Detachment Energy = 5.50±0.10 eV; B

CN^- + = (CN^- • )

By formula: CN^- + C₃H₈O = (CN^- • C₃H₈O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.70 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	18.1 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	24.8	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°	9.00 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	10.7 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₃F₃O = (CN^- • C₂H₃F₃O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.00 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	24.6 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	26.1	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°	15.10 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	16.4 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₄H₅N = (CN^- • C₄H₅N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Δ_rH°	19.5 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.1	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	23.8	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°	15.3 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	12.3 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₆O = (CN^- • C₂H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Δ_rH°	17.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.5	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	24.5	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°	10.7 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	10.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₃F₃ = (CN^- • C₂H₃F₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.4	kcal/mol	ICR	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_rS°	24.8	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°	11.0	kcal/mol	ICR	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₆F₂O = (CN^- • C₃H₆F₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.5	kcal/mol	ICR	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_rS°	26.0	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°	15.8	kcal/mol	ICR	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + C₄H₄F₆O = (CN^- • C₄H₄F₆O)

By formula: CN^- + C₄H₄F₆O = (CN^- • C₄H₄F₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.4	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
Δ_rS°	26.4	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°	17.8 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M,M

CN^- + = (CN^- • )

By formula: CN^- + H₂S = (CN^- • H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.9 ± 1.0	kcal/mol	TDEq	Meot-ner, 1988, 2	gas phase; B
Δ_rH°	19.8 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.8	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°	12.9 ± 1.0	kcal/mol	TDEq	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	12.4 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

(CN^- • 3) + = (CN^- • 4)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	N/A	Meot-Ner (Mautner) and Speller, 1989	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.8 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.6	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n, Entropy change calculated or estimated; M

(CN^- • 6) + = (CN^- • 7)

By formula: (CN^- • 6CHN) + CHN = (CN^- • 7CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.6 ± 1.0	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	N/A	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.60	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.0	238.	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy change calculated or estimated; M

(CN^- • 2) + = (CN^- • 3)

By formula: (CN^- • 2CHN) + CHN = (CN^- • 3CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.6	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	12.6	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.2	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	21.2	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	21.2	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.30	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • 3) + = (CN^- • 4)

By formula: (CN^- • 3CHN) + CHN = (CN^- • 4CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.9	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	10.9	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	24.8	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	24.8	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.50	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • ) + = (CN^- • 2)

By formula: (CN^- • CHN) + CHN = (CN^- • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.4	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	16.4	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	21.8	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	21.8	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.90	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • • 2) + = (CN^- • 2 • 2)

By formula: (CN^- • H₂O • 2CHN) + H₂O = (CN^- • 2H₂O • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.9 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.9 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.7	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • 3) + = (CN^- • • 3)

By formula: (CN^- • 3CHN) + H₂O = (CN^- • H₂O • 3CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.4 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.4 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.2	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • 4) + = (CN^- • 5)

By formula: (CN^- • 4CHN) + CHN = (CN^- • 5CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Δ_rH°	9.8	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.2	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	20.2	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.80	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • ) + = (CN^- • 2)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.7 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Δ_rH°	11.7	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.1	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	18.1	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

CN^- + C₂F₄O = (CN^- • C₂F₄O)

By formula: CN^- + C₂F₄O = (CN^- • C₂F₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + = (CN^- • )

By formula: CN^- + F₃OP = (CN^- • F₃OP)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.5 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	14.60 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂HF₅O = (CN^- • C₂HF₅O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.9	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°	11.3 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₄S = (CN^- • F₄S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.8 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	16.90 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₄Si = (CN^- • F₄Si)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	27.2 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	18.30 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + AsF₃ = (CN^- • AsF₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.9 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	16.60 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₂OS = (CN^- • F₂OS)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.8 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	6.90 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₃P = (CN^- • F₃P)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.3 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	6.40 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₅ClO = (CN^- • C₂H₅ClO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.1 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.5	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°	13.5 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₉BO₃ = (CN^- • C₃H₉BO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	19.6 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	10.70 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₂F₄O = (CN^- • C₂H₂F₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.0 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	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°	15.1 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CF₂O = (CN^- • CF₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.5 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	13.10 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₅FO = (CN^- • C₂H₅FO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.3	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°	12.9 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CH₃F₃Si = (CN^- • CH₃F₃Si)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.6 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	13.70 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₃F₃O = (CN^- • C₃H₃F₃O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.3	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°	12.9 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃HF₅O = (CN^- • C₃HF₅O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.8 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.4	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°	17.9 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₄H₅NO₂ = (CN^- • C₄H₅NO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.5	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°	10.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHCl₃ = (CN^- • CHCl₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.2 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	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°	10.8 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHCl₂F = (CN^- • CHCl₂F)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.8 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.7	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°	10.4 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₄H₁₀O = (CN^- • C₄H₁₀O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.1 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	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°	10.7 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₂F₆O = (CN^- • C₃H₂F₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.0 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	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°	16.8 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₆O = (CN^- • C₃H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.5	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°	8.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CH₂Cl₂ = (CN^- • CH₂Cl₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.3 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.2	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°	9.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHF₃ = (CN^- • CHF₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.0 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.4	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°	9.6 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₆F₂Si = (CN^- • C₂H₆F₂Si)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.8 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

(CN^- • • ) + = (CN^- • 2 • )

By formula: (CN^- • H₂O • CHN) + H₂O = (CN^- • 2H₂O • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.5 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.5	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.2 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

(CN^- • 2) + = (CN^- • • 2)

By formula: (CN^- • 2CHN) + H₂O = (CN^- • H₂O • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.7 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	12.5	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.0 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Ion clustering data, References, Notes

Data compiled by: John E. Bartmess

Protonation reactions

CN^- + =

By formula: CN^- + H⁺ = CHN

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	349.8 ± 1.0	kcal/mol	CIDT	Akin and Ervin, 2006	gas phase
Δ_rH°	350.50 ± 0.17	kcal/mol	D-EA	Bradforth, Kim, et al., 1993	gas phase
Δ_rH°	351.1 ± 2.1	kcal/mol	G+TS	Bartmess, Scott, et al., 1979	gas phase; value altered from reference due to change in acidity scale
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	342.5 ± 1.1	kcal/mol	H-TS	Akin and Ervin, 2006	gas phase
Δ_rG°	343.17 ± 0.27	kcal/mol	H-TS	Bradforth, Kim, et al., 1993	gas phase
Δ_rG°	343.8 ± 2.0	kcal/mol	IMRE	Bartmess, Scott, et al., 1979	gas phase; value altered from reference due to change in acidity scale

Ion clustering data

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

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

CN^- + = (CN^- • )

By formula: CN^- + AsF₃ = (CN^- • AsF₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.9 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	16.60 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CF₂O = (CN^- • CF₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.5 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	13.10 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHCl₂F = (CN^- • CHCl₂F)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.8 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.7	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°	10.4 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHCl₃ = (CN^- • CHCl₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.2 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	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°	10.8 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHF₃ = (CN^- • CHF₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.0 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.4	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°	9.6 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CHN = (CN^- • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rH°	20.0 ± 2.0	kcal/mol	Est	Larson and McMahon, 1984	gas phase; B
Δ_rH°	20.7	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	20.7	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.6	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	20.6	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	20.6	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	26.9	cal/mol*K	N/A	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(H2O), Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.5 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	13.7 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rG°	14.5 ± 1.6	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • ) + = (CN^- • 2)

By formula: (CN^- • CHN) + CHN = (CN^- • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.4	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	16.4	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	21.8	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	21.8	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.90	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • 2) + = (CN^- • 3)

By formula: (CN^- • 2CHN) + CHN = (CN^- • 3CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.6	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	12.6	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.2	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	21.2	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	21.2	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.30	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • 3) + = (CN^- • 4)

By formula: (CN^- • 3CHN) + CHN = (CN^- • 4CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.9	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rH°	10.9	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M,B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	24.8	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Δ_rS°	24.8	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.50	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • 4) + = (CN^- • 5)

By formula: (CN^- • 4CHN) + CHN = (CN^- • 5CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Δ_rH°	9.8	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.2	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	20.2	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.80	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • 5) + = (CN^- • 6)

By formula: (CN^- • 5CHN) + CHN = (CN^- • 6CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.5 ± 1.0	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.4	cal/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.40	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

(CN^- • 6) + = (CN^- • 7)

By formula: (CN^- • 6CHN) + CHN = (CN^- • 7CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.6 ± 1.0	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	N/A	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.60	kcal/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.0	238.	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; Entropy change calculated or estimated; M

(CN^- • ) + = (CN^- • • )

By formula: (CN^- • CHN) + H₂O = (CN^- • H₂O • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.4 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.7	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.5 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

(CN^- • 2) + = (CN^- • • 2)

By formula: (CN^- • 2CHN) + H₂O = (CN^- • H₂O • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.7 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	12.5	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.0 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

(CN^- • 3) + = (CN^- • • 3)

By formula: (CN^- • 3CHN) + H₂O = (CN^- • H₂O • 3CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.4 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.4 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.2	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • • ) + = (CN^- • 2 • )

By formula: (CN^- • CHN • H₂O) + CHN = (CN^- • 2CHN • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.2	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • • 2) + = (CN^- • 2 • 2)

By formula: (CN^- • CHN • 2H₂O) + CHN = (CN^- • 2CHN • 2H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.6	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
7.4	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • 2 • ) + = (CN^- • 3 • )

By formula: (CN^- • 2CHN • H₂O) + CHN = (CN^- • 3CHN • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.3	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
7.1	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

CN^- + = (CN^- • )

By formula: CN^- + CH₂Cl₂ = (CN^- • CH₂Cl₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.3 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.2	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°	9.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CH₃Cl = (CN^- • CH₃Cl)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.2 ± 1.0	kcal/mol	TDAs	Li, Ross, et al., 1996	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.90 ± 0.20	kcal/mol	TDAs	Li, Ross, et al., 1996	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + CH₃F₃Si = (CN^- • CH₃F₃Si)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.6 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	13.70 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (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, 2	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, 2	gas phase; B
Δ_rG°	9.2 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + CO₂ = (CN^- • CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.30 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	31.5	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.90 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B

CN^- + C₂F₄O = (CN^- • C₂F₄O)

By formula: CN^- + C₂F₄O = (CN^- • C₂F₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + = (CN^- • )

By formula: CN^- + C₂HF₅O = (CN^- • C₂HF₅O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.9	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°	11.3 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₂F₄O = (CN^- • C₂H₂F₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.0 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	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°	15.1 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₃F₃O = (CN^- • C₂H₃F₃O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.00 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	24.6 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	26.1	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°	15.10 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	16.4 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₃F₃ = (CN^- • C₂H₃F₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.4	kcal/mol	ICR	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_rS°	24.8	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°	11.0	kcal/mol	ICR	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₃N = (CN^- • C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.8 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Δ_rH°	16.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rH°	15.70	kcal/mol	TDAs	Hiraoka, Mizure, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.7	cal/mol*K	PHPMS	Hiraoka, Mizure, et al., 1988	gas phase; M
Δ_rS°	14.2	cal/mol*K	PHPMS	Meot-ner, 1988, 2	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°	9.5 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	9.1 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Δ_rG°	9.20	kcal/mol	TDAs	Hiraoka, Mizure, et al., 1988	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + C₂H₅ClO = (CN^- • C₂H₅ClO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.1 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.5	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°	13.5 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₅FO = (CN^- • C₂H₅FO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.3	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°	12.9 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₆F₂Si = (CN^- • C₂H₆F₂Si)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.8 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + = (CN^- • )

By formula: CN^- + C₂H₆O = (CN^- • C₂H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Δ_rH°	17.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.5	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	24.5	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°	10.7 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	10.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + C₃F₆O = (CN^- • C₃F₆O)

By formula: CN^- + C₃F₆O = (CN^- • C₃F₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	27.6 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17.20 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + C₃HF₅O = (CN^- • C₃HF₅O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.8 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.4	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°	17.9 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₂F₆O = (CN^- • C₃H₂F₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.0 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	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°	16.8 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₃F₃O = (CN^- • C₃H₃F₃O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.3	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°	12.9 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₆F₂O = (CN^- • C₃H₆F₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.5	kcal/mol	ICR	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_rS°	26.0	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°	15.8	kcal/mol	ICR	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₆O = (CN^- • C₃H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.5	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°	8.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₈O = (CN^- • C₃H₈O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.70 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	18.1 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	24.8	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°	9.00 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	10.7 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₃H₉BO₃ = (CN^- • C₃H₉BO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	19.6 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	35.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	10.70 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + C₄H₄F₆O = (CN^- • C₄H₄F₆O)

By formula: CN^- + C₄H₄F₆O = (CN^- • C₄H₄F₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.7 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.4	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
Δ_rS°	26.4	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°	17.8 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M,M

CN^- + = (CN^- • )

By formula: CN^- + C₄H₅NO₂ = (CN^- • C₄H₅NO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.4 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.5	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°	10.0 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₄H₅N = (CN^- • C₄H₅N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B,M
Δ_rH°	19.5 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	27.1	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	23.8	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°	15.3 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	12.3 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₄H₉Cl = (CN^- • C₄H₉Cl)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.9 ± 1.0	kcal/mol	TDAs	Li, Ross, et al., 1996	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.55 ± 0.20	kcal/mol	TDAs	Li, Ross, et al., 1996	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + C₄H₁₀O = (CN^- • C₄H₁₀O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.1 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.8	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°	10.7 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + C₆H₁₁NO₃ = (CN^- • C₆H₁₁NO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26.4	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.7	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M

CN^- + = (CN^- • )

By formula: CN^- + C₆H₁₁NO₃ = (CN^- • C₆H₁₁NO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26.4 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17.8 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + C₆H₁₅B = (CN^- • C₆H₁₅B)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	35.90 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	27.60 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + F₂OS = (CN^- • F₂OS)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.8 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	6.90 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₃OP = (CN^- • F₃OP)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.5 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	14.60 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₃P = (CN^- • F₃P)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.3 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	6.40 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₄S = (CN^- • F₄S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.8 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	16.90 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + F₄Si = (CN^- • F₄Si)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	27.2 ± 1.0	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	30.	cal/mol*K	N/A	Larson, Szulejko, et al., 1988	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°	18.30 ± 0.50	kcal/mol	IMRE	Larson, Szulejko, et al., 1988	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + H₂O = (CN^- • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.70 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	14.6 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B,B,M,M
Δ_rH°	13.80	kcal/mol	TDAs	Payzant, Yamdagni, et al., 1971	gas phase; B,M
Δ_rH°	14.6	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.6	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	18.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	19.6	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Δ_rS°	19.6	cal/mol*K	PHPMS	Meot-ner, 1988	gas phase; M
Δ_rS°	19.8	cal/mol*K	HPMS	Payzant, Yamdagni, et al., 1971	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.30 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	8.7 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	8.7 ± 1.0	kcal/mol	TDAs	Meot-ner, 1988	gas phase; B
Δ_rG°	7.90	kcal/mol	TDAs	Payzant, Yamdagni, et al., 1971	gas phase; B

(CN^- • 3) + = (CN^- • • 3)

By formula: (CN^- • 3H₂O) + CHN = (CN^- • CHN • 3H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.1	kcal/mol	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
7.9	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • • ) + = (CN^- • 2 • )

By formula: (CN^- • H₂O • CHN) + H₂O = (CN^- • 2H₂O • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.5 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.5	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.2 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

(CN^- • • 2) + = (CN^- • 2 • 2)

By formula: (CN^- • H₂O • 2CHN) + H₂O = (CN^- • 2H₂O • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.9 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.9 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.7	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M

(CN^- • 2 • ) + = (CN^- • 3 • )

By formula: (CN^- • 2H₂O • CHN) + H₂O = (CN^- • 3H₂O • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.5 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.5 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

(CN^- • ) + = (CN^- • 2)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11.7 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B,M
Δ_rH°	11.7	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.1	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	18.1	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; B

(CN^- • 2) + = (CN^- • 3)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.7 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Stated EA is Vertical Detachment Energy, at 12 K. At 298 K, measured Vertical Detachment Energy = 5.50±0.10 eV; B,M
Δ_rH°	10.7	kcal/mol	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.8	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n; M
Δ_rS°	19.8	cal/mol*K	PHPMS	Meot-ner, 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.8 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Stated EA is Vertical Detachment Energy, at 12 K. At 298 K, measured Vertical Detachment Energy = 5.50±0.10 eV; B

(CN^- • 3) + = (CN^- • 4)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 1.0	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	N/A	Meot-Ner (Mautner) and Speller, 1989	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.8 ± 1.4	kcal/mol	TDAs	Meot-Ner (Mautner) M. and Speller, 1989	gas phase; Entropy estimated; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
4.6	262.	PHPMS	Meot-Ner (Mautner) and Speller, 1989	gas phase; n, Entropy change calculated or estimated; M

CN^- + = (CN^- • )

By formula: CN^- + H₂S = (CN^- • H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.9 ± 1.0	kcal/mol	TDEq	Meot-ner, 1988, 2	gas phase; B
Δ_rH°	19.8 ± 3.5	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.8	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°	12.9 ± 1.0	kcal/mol	TDEq	Meot-ner, 1988, 2	gas phase; B
Δ_rG°	12.4 ± 2.3	kcal/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

CN^- + = (CN^- • )

By formula: CN^- + H₃B = (CN^- • H₃B)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	61.1 ± 2.1	kcal/mol	Endo	Workman and Squires, 1988	gas phase; B

CN^- + = (CN^- • )

By formula: CN^- + O₂S = (CN^- • O₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.70 ± 0.80	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	28.	cal/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	13.40 ± 0.20	kcal/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B

References

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

Larson, Szulejko, et al., 1988
Larson, J.W.; Szulejko, J.E.; McMahon, T.B., Gas Phase Lewis Acid-Base Interactions. An Experimental Determination of Cyanide Binding Energies From Ion Cyclotron Resonance and High-Pressure Mass Spectrometric Equilibrium Measurements., J. Am. Chem. Soc., 1988, 110, 23, 7604, https://doi.org/10.1021/ja00231a004 . [all data]

Meot-ner, 1988
Meot-ner, M., The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules, J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022 . [all data]

Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P., Hydration of CN-, NO₂-, NO₃-, and HO- in the gas phase, Can. J. Chem., 1971, 49, 3308. [all data]

Meot-Ner (Mautner) and Speller, 1989
Meot-Ner (Mautner), M.; Speller, C.V., Multicomponent Cluster Ions.3. Comparative Stabilities of Cationic and Anionic Hydrogen Bonded Networks. Mixed Clusters of Water and Hydrogen Cyanide, J. Phys. Chem., 1989, 93, 6580. [all data]

Meot-ner, 1988, 2
Meot-ner, M., Ionic Hydrogen Bond and Ion Solvation. ₆. Interaction Energies of the Acetate Ion with Organic Molecules. Comparison of CH₃COO^- with Cl^-, CN^-, and SH^-, J. Am. Chem. Soc., 1988, 110, 12, 3854, https://doi.org/10.1021/ja00220a022 . [all data]

Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. The energetics of interaction between cyanide ion and bronsted acids, J. Am. Chem. Soc., 1987, 109, 6230. [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Gas phase bihalide and pseudohalide ions. An ICR determination of hydrogen bond energies in XHY- species (X,Y = F, Cl, Br, CN), Inorg. Chem., 1984, 23, 2029. [all data]

Meot-ner, Cybulski, et al., 1988
Meot-ner, M.; Cybulski, S.M.; Scheiner, S.; Liebman, J.F., Is CN^- Significantly Anisotropic? Comparison of CN^- vs. Cl^-: Clustering with HCN and Condensed Phase Thermochemistry, J. Phys. Chem., 1988, 92, 10, 2738, https://doi.org/10.1021/j100321a009 . [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]

Akin and Ervin, 2006
Akin, F.A.; Ervin, K.M., Collision-induced dissociation of HS-(HCN): Unsymmetrical hydrogen bonding in a proton-bound dimer anion, J. Phys. Chem. A, 2006, 110, 4, 1342-1349, https://doi.org/10.1021/jp0540454 . [all data]

Bradforth, Kim, et al., 1993
Bradforth, S.E.; Kim, E.H.; Arnold, D.W.; Neumark, D.M., Photoelectron Spectroscopy of CN-, NCO-, and NCS-, J. Chem. Phys., 1993, 98, 2, 800, https://doi.org/10.1063/1.464244 . [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Meot-Ner (Mautner) M. and Speller, 1989
Meot-Ner (Mautner) M.; Speller, C.V., Multicomponent Cluster Ions. 2. Comparative Stabilities of Cationic and Anionic Hydrogen Bonded Networks. Mixed Clusters of Water and Hydrogen Cyanide, J. Phys. Chem., 1989, 93, 9, 3663, https://doi.org/10.1021/j100346a058 . [all data]

Li, Ross, et al., 1996
Li, C.; Ross, P.; Szulejko, J.; McMahon, T.B., High-Pressure Mass Spectrometric Investigations of the Potential Energy Surfaces of Gas-Phase Sn2 Reactions., J. Am. Chem. Soc., 1996, 118, 39, 9360, https://doi.org/10.1021/ja960565o . [all data]

Workman and Squires, 1988
Workman, D.B.; Squires, R.R., Hydride Binding Energies of Boranes, Inorg. Chem., 1988, 27, 11, 1846, https://doi.org/10.1021/ic00284a003 . [all data]

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