p-difluorophenide anion
- Formula: C6H3F2-
- Molecular weight: 113.0854
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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
Electron affinity of neutral species
| EAneutral (eV) | Method | Reference | Comment |
|---|---|---|---|
| 2.05 ± 0.19 | D-EA | Briscese and Riveros, 1975 | < MeOH, <= EtOH; value altered from reference due to change in acidity scale |
Protonation reactions
C6H3F2- + =
By formula: C6H3F2- + H+ = C6H4F2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1591. ± 8.8 | kJ/mol | G+TS | Buker, Nibbering, et al., 1997 | gas phase |
| ΔrH° | 1589. ± 13. | kJ/mol | G+TS | Briscese and Riveros, 1975 | gas phase; < MeOH, <= EtOH; value altered from reference due to change in acidity scale |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1557. ± 8.4 | kJ/mol | IMRE | Buker, Nibbering, et al., 1997 | gas phase |
| ΔrG° | 1555. ± 13. | kJ/mol | IMRB | Briscese and Riveros, 1975 | gas phase; < MeOH, <= EtOH; 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.
Briscese and Riveros, 1975
Briscese, S.M.J.; Riveros, J.M.,
Gas phase nucleophilic reactions of aromatic systems,
J. Am. Chem. Soc., 1975, 97, 230. [all data]
Buker, Nibbering, et al., 1997
Buker, H.H.; Nibbering, N.M.M.; Espinosa, D.; Mongin, F.; Schlosser, M.,
Additivity of substituent effects in the fluoroarene series: Equilibrium acidity in the gas phase and deprotonation rates in ethereal solution,
Tetrahed. Lett., 1997, 38, 49, 8519-8522, https://doi.org/10.1016/S0040-4039(97)10303-3
. [all data]
Notes
Go To: Top, 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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