CH radical anion
- Formula: CH-
- Molecular weight: 13.0192
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Gas phase thermochemistry 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 by: John E. Bartmess
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 476.35 ± 0.96 | kJ/mol | R-EA | Kasdan, Herbst, et al., 1975 | |
| ΔfH°gas | 633.46 | kJ/mol | EIAE | Trepka and Neuert, 1963 | From CH4 |
Reaction thermochemistry 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 by: John E. Bartmess
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Individual Reactions
CH- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1615.2 ± 1.8 | kJ/mol | D-EA | Kasdan, Herbst, et al., 1975 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1586.9 ± 2.2 | kJ/mol | H-TS | Kasdan, Herbst, et al., 1975 | gas phase |
Gas phase ion energetics 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 by: John E. Bartmess
Protonation reactions
CH- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1615.2 ± 1.8 | kJ/mol | D-EA | Kasdan, Herbst, et al., 1975 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1586.9 ± 2.2 | kJ/mol | H-TS | Kasdan, Herbst, et al., 1975 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Kasdan, Herbst, et al., 1975
Kasdan, A.; Herbst, E.; Lineberger, W.C.,
Laser photoelectron spectrometry of CH2-,
Chem. Phys. Lett., 1975, 31, 78. [all data]
Trepka and Neuert, 1963
Trepka, L.v.; Neuert, H.,
Uber die Entstehenung von Negativen Ionen aus einigen Kohlenwasserstoffen und Alkoholen durch Elektronenstoss,
Z. Naturfor., 1963, 18A, 1295. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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