S2O radical anion
- Formula: OS2-
- Molecular weight: 80.130
- CAS Registry Number: 12143-07-6
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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 | -237.1 ± 1.6 | kJ/mol | R-EA | Nimlos and Ellison, 1986 |
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
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Individual Reactions
(OS2- • 4294967295) +
= OS2-
By formula: (OS2- • 4294967295S2) + S2 = OS2-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 474.0 ± 1.6 | kJ/mol | N/A | Nimlos and Ellison, 1986 | gas phase |
Vibrational and/or electronic energy levels
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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: Marilyn E. Jacox
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| Td = 15140 ± 65 | Nimlos and Ellison, 1986 | ||||||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a' | 1 | SO stretch | 1003.0 | Ar | IR | Zeng, Yu, et al., 2004 | |
| 3 | SS stretch | 620 ± 150 | gas | PE | Nimlos and Ellison, 1986 | ||
| 3 | SS stretch | 567.7 | Ar | IR | Zeng, Yu, et al., 2004 | ||
Additional references: Jacox, 1994, page 110
Notes
| d | Photodissociation threshold |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Nimlos and Ellison, 1986
Nimlos, M.R.; Ellison, G.B.,
Photoelectron spectroscopy of SO2-, S3-, and S2O-,
J. Phys. Chem., 1986, 90, 2574. [all data]
Zeng, Yu, et al., 2004
Zeng, A.; Yu, L.; Wang, Y.; Kong, Q.; Xu, Q.; Zhou, M.,
Infrared Absorption Spectra of SSO,
J. Phys. Chem. A, 2004, 108, 32, 6656, https://doi.org/10.1021/jp0485800
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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