pNO2-C6H4CH2 anion
- Formula: C7H6NO2-
- Molecular weight: 136.1286
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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
Protonation reactions
C7H6NO2- + =
By formula: C7H6NO2- + H+ = C7H7NO2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1475. ± 8.8 | kJ/mol | G+TS | Taft and Topsom, 1987 | gas phase; value altered from reference due to change in acidity scale |
| ΔrH° | 1477. ± 10. | kJ/mol | G+TS | Cumming and Kebarle, 1978 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1445. ± 8.4 | kJ/mol | IMRE | Taft and Topsom, 1987 | gas phase; value altered from reference due to change in acidity scale |
| ΔrG° | 1447. ± 8.4 | kJ/mol | IMRE | Cumming and Kebarle, 1978 | gas phase |
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.
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]
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, 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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