MeSOCH2 anion
- Formula: C2H5OS-
- Molecular weight: 77.126
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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
C2H5OS- + =
By formula: C2H5OS- + H+ = C2H6OS
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 373.5 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
| ΔrH° | 374.3 ± 2.3 | kcal/mol | G+TS | Cumming and Kebarle, 1978 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 366.4 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
| ΔrG° | 367.2 ± 2.0 | kcal/mol | IMRE | Cumming and Kebarle, 1978 | gas phase |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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: John E. Bartmess
Electron affinity of neutral species
| EAneutral (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.48 ± 0.13 | D-EA | Bartmess, Scott, et al., 1979 | value altered from reference due to change in acidity scale |
Protonation reactions
C2H5OS- + =
By formula: C2H5OS- + H+ = C2H6OS
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 373.5 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
| ΔrH° | 374.3 ± 2.3 | kcal/mol | G+TS | Cumming and Kebarle, 1978 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 366.4 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
| ΔrG° | 367.2 ± 2.0 | kcal/mol | IMRE | Cumming and Kebarle, 1978 | gas phase |
References
Go To: Top, 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.
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]
Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P.,
Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A),
Can. J. Chem., 1978, 56, 1. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EAneutral Electron affinity of neutral species 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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