Carbonyl sulfide
- Formula: COS
- Molecular weight: 60.075
- IUPAC Standard InChI: InChI=1S/COS/c2-1-3
- IUPAC Standard InChIKey: JJWKPURADFRFRB-UHFFFAOYSA-N
- CAS Registry Number: 463-58-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Carbon oxide sulfide; Carbon oxysulfide; COS; Oxycarbon sulfide; UN 2204; Carbon oxide sulphide; carbonyl sulphide
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Reaction thermochemistry data
Go To: Top, References, Notes
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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
+
= (
•
)
By formula: F- + COS = (F- • COS)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 133. ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1985 | gas phase; B,M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 100. | J/mol*K | N/A | Larson and McMahon, 1985 | gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 103. ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1985 | gas phase; B,M |
+
= (
•
)
By formula: CH3+ + COS = (CH3+ • COS)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 239. | kJ/mol | PHPMS | McMahon, Heinis, et al., 1988 | gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M |
+
=
+
By formula: COS + H2O = CO2 + H2S
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -33.4 ± 0.96 | kJ/mol | Eqk | Terres and Wesemann, 1932 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -35.66 kJ/mol; ALS |
=
+
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 32.5 ± 0.3 | kJ/mol | Eqk | Bechtold, 1965 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 30.3 kJ/mol; ALS |
By formula: (COS+ • COS) + COS = (COS+ • 2COS)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.7 | kJ/mol | PI | Ono, Osuch, et al., 1981 | gas phase; M |
By formula: COS+ + COS = (COS+ • COS)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 72.0 | kJ/mol | PI | Ono, Osuch, et al., 1981 | gas phase; M |
By formula: CS2+ + COS = (CS2+ • COS)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 24. | kJ/mol | PI | Ono, Osuch, et al., 1981 | gas phase; M |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Larson and McMahon, 1985
Larson, J.W.; McMahon, T.B.,
Fluoride and chloride affinities of the main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ICR halide exchange equilibria,
J. Am. Chem. Soc., 1985, 107, 766. [all data]
Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P.,
Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions,
J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014
. [all data]
McMahon, Heinis, et al., 1988
McMahon, T.; Heinis, T.; Nicol, G.; Hovey, J.K.; Kebarle, P.,
Methyl Cation Affinities,
J. Am. Chem. Soc., 1988, 110, 23, 7591, https://doi.org/10.1021/ja00231a002
. [all data]
Foster, Williamson, et al., 1974
Foster, M.S.; Williamson, A.D.; Beauchamp, J.L.,
Photoionization mass spectrometry of trans-azomethane,
Int. J. Mass Spectrom. Ion Phys., 1974, 15, 429. [all data]
Terres and Wesemann, 1932
Terres, E.; Wesemann, H.,
Uber Gleichgewichtsmessungen der teilreaktionen bei der umsetzung von scnwefelkohlenstoff mit wasserdampf im temperaturgebiet von 350° bis 900° C,
Angew. Chem., 1932, 45, 795-832. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Bechtold, 1965
Bechtold, V.E.,
Bestimmung des Standardwertes der freien Reaktionsenthalpie für die Bildung von Kohlenoxysulfid aus Kohlenmonoxyd,
Ber. Bunsenges. Phys. Chem., 1965, 69, 326-328. [all data]
Ono, Osuch, et al., 1981
Ono, Y.; Osuch, E.A.; Ng, C.Y.,
Molecular beam photoionization study of OCS, (OCS)2, (OCS)3, and OCS.CS2,
J. Chem. Phys., 1981, 74, 1645. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions 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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