C7H5F3O3S
- Formula: C7H5F3O3S
- Molecular weight: 226.173
- CAS Registry Number: 432-84-8
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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
De-protonation reactions
C7H4F3O3S- + = C7H5F3O3S
By formula: C7H4F3O3S- + H+ = C7H5F3O3S
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 322.5 ± 2.1 | kcal/mol | G+TS | Koppel, Taft, et al., 1994 | gas phase |
| ΔrH° | 322.1 ± 2.1 | kcal/mol | G+TS | Taft and Topsom, 1987 | gas phase; Slightly revised with re-anchoring, 1991. 91TAF; value altered from reference due to change in acidity scale |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 315.7 ± 2.0 | kcal/mol | IMRE | Koppel, Taft, et al., 1994 | gas phase |
| ΔrG° | 315.3 ± 2.0 | kcal/mol | IMRE | Taft and Topsom, 1987 | gas phase; Slightly revised with re-anchoring, 1991. 91TAF; value altered from reference due to change in acidity scale |
References
Go To: Top, 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.
Koppel, Taft, et al., 1994
Koppel, I.A.; Taft, R.W.; Anvia, F.; Zhu, S.Z.; Hu, L.Q.; Sung, K.S.; Desmarteau, D.D.; Yagupolskii, L.M.,
The Gas-Phase Acidities of Very Strong Neutral Bronsted Acids,
J. Am. Chem. Soc., 1994, 116, 7, 3047, https://doi.org/10.1021/ja00086a038
. [all data]
Taft and Topsom, 1987
Taft, R.W.; Topsom, R.D.,
The Nature and Analysis of Substituent Effects,
Prog. Phys. Org. Chem., 1987, 16, 1. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
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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