p-Benzoquinone, 2,3,5,6-tetrafluoro- anion
- Formula: C6F4O2-
- Molecular weight: 180.0572
- CAS Registry Number: 42439-31-6
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Gas phase 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -257. ± 10. | kcal/mol | R-EA | Heinis, Chowdhury, et al., 1988 | ΔGea(423 K) = -60.9 kcal/mol; ΔSea (estimated) = -3.5 eu. |
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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C6F4O2- + = (C6F4O2- •
)
By formula: C6F4O2- + CH4O = (C6F4O2- • CH4O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 3.0 ± 1.6 | kcal/mol | IMRE | Chowdhury, Grimsrud, et al., 1987 | gas phase; Free energy affinity at 70°C.; B |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.0 | 343. | PHPMS | Chowdhury, 1987 | gas phase; M |
C6F4O2- + = (C6F4O2- •
)
By formula: C6F4O2- + C2H6OS = (C6F4O2- • C2H6OS)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 4.5 ± 1.6 | kcal/mol | IMRE | Chowdhury, Grimsrud, et al., 1987 | gas phase; Free energy affinity at 70°C.; B |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.5 | 343. | PHPMS | Chowdhury, 1987 | gas phase; M |
C6F4O2- + = (C6F4O2- •
)
By formula: C6F4O2- + C3H7NO = (C6F4O2- • C3H7NO)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 2.7 ± 1.6 | kcal/mol | IMRE | Chowdhury, Grimsrud, et al., 1987 | gas phase; Free energy affinity at 70°C.; B |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.7 | 343. | PHPMS | Chowdhury, 1987 | gas phase; M |
C6F4O2- + = (C6F4O2- •
)
By formula: C6F4O2- + C2H3N = (C6F4O2- • C2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 3.4 ± 1.6 | kcal/mol | IMRE | Chowdhury, Grimsrud, et al., 1987 | gas phase; Free energy affinity at 70°C.; B |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.4 | 343. | PHPMS | Chowdhury, 1987 | gas phase; M |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Heinis, Chowdhury, et al., 1988
Heinis, T.; Chowdhury, S.; Scott, S.L.; Kebarle, P.,
Electron Affinities of Benzo-, Naphtho-, and Anthraquinones Determined from Gas-Phase Equilibria Measurements,
J. Am. Chem. Soc., 1988, 110, 2, 400, https://doi.org/10.1021/ja00210a015
. [all data]
Chowdhury, Grimsrud, et al., 1987
Chowdhury, S.; Grimsrud, E.P.; Kebarle, P.,
Bonding of Charged Delocalized Anions to Protic and Dipolar Aprotic Solvent Molecules,
J. Phys. Chem., 1987, 91, 10, 2551, https://doi.org/10.1021/j100294a021
. [all data]
Chowdhury, 1987
Chowdhury, S. Grimsrud,
Bonding of Charge Delocalized Anions to Protic and Dipolar Aprotic Solvents,
J. Phys. Chem., 1987, 91, 10, 2551, https://doi.org/10.1021/j100294a021
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
T Temperature ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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