SO4 radical anion
- Formula: O4S-
- Molecular weight: 96.063
- CAS Registry Number: 12143-45-2
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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
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Individual Reactions
O4S- + = (O4S- •
)
By formula: O4S- + H2O = (O4S- • H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 24.7 ± 0.84 | kJ/mol | IMRE | Möhler, Reiner, et al., 1992 | gas phase; B |
Free energy of reaction
| ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 21. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
O4S- + = (O4S- •
)
By formula: O4S- + O2S = (O4S- • O2S)
Free energy of reaction
| ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 28. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; switching reaction(SO4-)H2O; M |
(O4S- • 4294967295) +
= O4S-
By formula: (O4S- • 4294967295O3S) + O3S = O4S-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 450. ± 22. | kJ/mol | N/A | Wang, Nicholas, et al., 2000 | gas phase; B |
(O4S- • ) +
= (O4S- • 2
)
By formula: (O4S- • H2O) + H2O = (O4S- • 2H2O)
Free energy of reaction
| ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.7 | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Möhler, Reiner, et al., 1992
Möhler, O.; Reiner, T.; Arnold, F.,
The Formation of SO5(-) by Gas Phase Ion-Molecule Reactions,
J. Chem. Phys., 1992, 97, 11, 8233, https://doi.org/10.1063/1.463394
. [all data]
Fehsenfeld and Ferguson, 1974
Fehsenfeld, F.C.; Ferguson, E.E.,
Laboratory studies of negative ion reactions with atmospheric trace constituents,
J. Chem. Phys., 1974, 61, 3181. [all data]
Wang, Nicholas, et al., 2000
Wang, X.B.; Nicholas, J.B.; Wang, L.S.,
Photoelectron spectroscopy and theoretical calculations of SO4- and HSO4-: Confirmation of high electron affinities of SO4 and HSO4,
J. Phys. Chem. A, 2000, 104, 3, 504-508, https://doi.org/10.1021/jp992726r
. [all data]
Notes
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- Symbols used in this document:
T Temperature 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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