Sulfur dimer, positive ion
- Formula: S2+
- Molecular weight: 64.129
- CAS Registry Number: 12597-02-3
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Reaction thermochemistry data
Go To: Top, Constants of diatomic molecules, 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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
By formula: S2+ + CS2 = (S2+ • CS2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 129. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
ΔrH° | 120. | kJ/mol | PI | Ono, Linn, et al., 1981 | gas phase |
ΔrH° | 91.6 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; equilibrium uncertain |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
ΔrS° | 71.5 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; equilibrium uncertain |
By formula: (S2+ • 2CS2) + CS2 = (S2+ • 3CS2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 23. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; Entropy change calculated or estimated |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | N/A | Hiraoka, Fujimaki, et al., 1994 | gas phase; Entropy change calculated or estimated |
By formula: (S2+ • CS2) + CS2 = (S2+ • 2CS2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 35. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Constants of diatomic molecules
Go To: Top, Reaction thermochemistry data, 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: Klaus P. Huber and Gerhard H. Herzberg
References
Go To: Top, Reaction thermochemistry data, Constants of diatomic molecules, Notes
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.; 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]
Ono, Linn, et al., 1981
Ono, Y.; Linn, S.H.; Prest, H.F.; Gress, M.E.; Ng, C.Y.,
A Study of the High Rydberg State and Ion - Molecule Reactions of Carbon Disulfide Using the Molecular Beam Photoionization Method,
J. Chem. Phys., 1981, 74, 2, 1125, https://doi.org/10.1063/1.441219
. [all data]
Meot-Ner (Mautner) and Field, 1977
Meot-Ner (Mautner), M.; Field, F.H.,
Proton Affinity and Ion - Molecule Clustering in CO2 and CS2. Applications in Martian Ionospheric Chemistry,
J. Chem. Phys., 1977, 66, 10, 4527, https://doi.org/10.1063/1.433706
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Constants of diatomic molecules, References
- 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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