Carbonyl sulfide anion
- Formula: COS-
- Molecular weight: 60.076
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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 | -187. ± 19. | kJ/mol | R-EA | Compton, Reinhardt, et al., 1975 | See Surber, Ananthavel, et al., 2002, for a claim that EA<0; G3MP2B3 calculations indicate an EA of ca. -0.05 eV, unbound. At the bent geometry of the anion, G3MP2B3 EDE(vert)=0.35 eV bound. The experiment appears to be the vertical EA. |
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.
Compton, Reinhardt, et al., 1975
Compton, R.N.; Reinhardt, P.W.; Cooper, C.D.,
Collisional ionization of Na, K, and Cs by CO2, COS, and CS2: Molecular electron affinities,
J. Chem. Phys., 1975, 63, 3821. [all data]
Surber, Ananthavel, et al., 2002
Surber, E.; Ananthavel, S.P.; Sanov, A.,
Nonexistent electron affinity of OCS and the stabilization of carbonyl sulfide anions by gas phase hydration,
J. Chem. Phys., 2002, 116, 5, 1920-1929, https://doi.org/10.1063/1.1433001
. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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