Sulfur hexafluoride anion
- Formula: F6S-
- Molecular weight: 146.056
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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 | -315.6 ± 2.3 | kcal/mol | R-EA | Grimsrud, Chowdhury, et al., 1985 | ΔGea(423 K) = -29.8 kcal/mol; ΔSea = +13 eu. See also Chowdhury, Heinis, et al., 1986, Bopp, Roscioli, et al., 2007 |
| ΔfH°gas | <-313.00 | kcal/mol | CIDT | Refaey and Franklin, 1978 |
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 by: John E. Bartmess
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
F6S- + = (F6S- •
)
By formula: F6S- + F6S = (F6S- • F6S)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 2.30 ± 0.30 | kcal/mol | TDAs | Hiraoka, Shimizu, et al., 1995 | gas phase; Entropy estimated. Gaff=+0.37 at 141K |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | -3.10 ± 0.30 | kcal/mol | TDAs | Hiraoka, Shimizu, et al., 1995 | gas phase; Entropy estimated. Gaff=+0.37 at 141K |
F6S- + = (F6S- •
)
By formula: F6S- + C6H4FNO2 = (F6S- • C6H4FNO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.7 ± 1.0 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 7.9 ± 1.6 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase |
F6S- + = (F6S- •
)
By formula: F6S- + C7H4F3NO2 = (F6S- • C7H4F3NO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.0 ± 1.0 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 9.0 ± 1.6 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase |
F6S- + = (F6S- •
)
By formula: F6S- + C6H5NO2 = (F6S- • C6H5NO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.9 ± 1.0 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 6.7 ± 1.6 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase |
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.
Grimsrud, Chowdhury, et al., 1985
Grimsrud, E.P.; Chowdhury, S.; Kebarle, P.,
Electron affinity of SF6 and perfluoromethylcyclohexane. The unusual kinetics of electron transfer reactions A- + B- + A, where A = SF6 or perfluorinated cycloalkanes,
J. Chem. Phys., 1985, 83, 1059. [all data]
Chowdhury, Heinis, et al., 1986
Chowdhury, S.; Heinis, T.; Grimsrud, E.P.; Kebarle, P.,
Entropy Changes and Electron Affinities from Gas-Phase Electron Transfer Equilibria: A- + B = A + B-,
J. Phys. Chem., 1986, 90, 12, 2747, https://doi.org/10.1021/j100403a037
. [all data]
Bopp, Roscioli, et al., 2007
Bopp, J.C.; Roscioli, J.R.; Johnson, M.A.; Miller, T.M.; Viggiano, A.A.; Villano, S.M.; Wren, S.W.; Lineberger,
Spectroscopic characterization of the isolated SF6- and C4F8- anions: Observation of very long harmonic progressions in symmetric deformation modes upon photodetachment,
J. Phys. Chem. A, 2007, 111, 7, 1214-1221, https://doi.org/10.1021/jp0665372
. [all data]
Refaey and Franklin, 1978
Refaey, K.M.A.; Franklin, J.L.,
Collisonal decomposition of SF6-,
Int. J. Mass Spectrom. Ion Phys., 1978, 26, 125. [all data]
Hiraoka, Shimizu, et al., 1995
Hiraoka, K.; Shimizu, A.; Minamitsu, A.; Nasu, M.; Fujimaki, S.; Yamabe, S.,
The small binding energies of the negative cluster ions: SF5-(SF6)1, SF6-(SF6)1 and F-(SF6)n (n=1 and 2), in the gas phase,
Chem. Phys. Lett., 1995, 241, 5-6, 623, https://doi.org/10.1016/0009-2614(95)00676-U
. [all data]
Chowdhury and Kebarle, 1986
Chowdhury, S.; Kebarle, P.,
Role of Binding Energies in A-.B and A.B- Complexes in the Kinetics of Gas Phase Electron Transfer Reactions:A- + B = A + B- Involving Perfluoro Compounds: SF6, C6F11CF3,
J. Chem. Phys., 1986, 85, 9, 4989, https://doi.org/10.1063/1.451687
. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions 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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