S2 anion
- Formula: S2-
- Molecular weight: 64.131
- CAS Registry Number: 12185-15-8
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Ion clustering 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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Clustering reactions
S2- = CS4-
By formula: S2- = CS4-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 19.1 ± 1.5 | kcal/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B |
S2- + = (S2- •
)
By formula: S2- + CS2 = (S2- • CS2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 19.1 | kcal/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994, 2 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 29. | cal/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994, 2 | gas phase; M |
(S2- • ) +
= (S2- • 2
)
By formula: (S2- • CS2) + CS2 = (S2- • 2CS2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.1 | kcal/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994, 2 | gas phase; Entropy change calculated or estimated; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Hiraoka, Fujimaki, et al., 1994, 2 | gas phase; Entropy change calculated or estimated; M |
(S2- • 4294967295) +
= S2-
By formula: (S2- • 4294967295S) + S = S2-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 92.7 ± 5.2 | kcal/mol | N/A | Moran and Ellison, 1988 | gas phase; B |
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.
Hiraoka, Fujimaki, et al., 1994
Hiraoka, K.; Fujimaki, S.; Aruga, K.,
Frontier-controlled Structures of the Gas Phas Clusters A+/-(CS2)n, A+/- = S2+, CS2+, S2-, and CS2-,
J. Phys. Chem. (1994), 1994, 98, 7, 1802-1809, https://doi.org/10.1021/j100058a014
. [all data]
Hiraoka, Fujimaki, et al., 1994, 2
Hiraoka, K.; Fujimaki, S.; Aruga, K.; Yamabe, S.,
Frontier-Controlled Structures of the Gas-Phase A+-(CS2)n Clusters ,A+- = S2+, CS2+, S2-, and CS2-,
J. Phys. Chem., 1994, 98, 7, 1802, https://doi.org/10.1021/j100058a014
. [all data]
Moran and Ellison, 1988
Moran, S.; Ellison, G.B.,
Photoelectron Spectroscopy of Sulfur Ions,
J. Phys. Chem., 1988, 92, 7, 1794, https://doi.org/10.1021/j100318a021
. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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