CH2CN anion
- Formula: C2H2N-
- Molecular weight: 40.0445
- CAS Registry Number: 21438-99-3
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Ion clustering data
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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
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Clustering reactions
C2H2N- + = (C2H2N- •
)
By formula: C2H2N- + C2H3N = (C2H2N- • C2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 53.6 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B,M |
| ΔrH° | 65.69 | kJ/mol | TDAs | Hiraoka, Mizure, et al., 1988 | gas phase; B,M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 95.4 | J/mol*K | PHPMS | Hiraoka, Mizure, et al., 1988 | gas phase; M |
| ΔrS° | 56.1 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 37. ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B |
| ΔrG° | 37.2 | kJ/mol | TDAs | Hiraoka, Mizure, et al., 1988 | gas phase; B |
C2H2N- + = (C2H2N- •
)
By formula: C2H2N- + H2O = (C2H2N- • H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 55.2 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B,M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 73.6 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 33. ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
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]
Notes
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- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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