p-difluorophenide anion
- Formula: C6H3F2-
- Molecular weight: 113.0854
- Information on this page:
- Other data available:
- Options:
Gas phase ion energetics data
Go To: Top, 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 |
|---|---|---|---|
| 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° | 380.2 ± 2.1 | kcal/mol | G+TS | Buker, Nibbering, et al., 1997 | gas phase |
| ΔrH° | 379.8 ± 3.1 | kcal/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° | 372.1 ± 2.0 | kcal/mol | IMRE | Buker, Nibbering, et al., 1997 | gas phase |
| ΔrG° | 371.7 ± 3.0 | kcal/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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.