Carbonyl sulfide

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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 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

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Individual Reactions

Fluorine anion + Carbonyl sulfide = (Fluorine anion • Carbonyl sulfide)

By formula: F- + COS = (F- • COS)

Quantity Value Units Method Reference Comment
Δr133. ± 8.4kJ/molIMRELarson and McMahon, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
Δr100.J/mol*KN/ALarson and McMahon, 1985gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Δr103. ± 8.4kJ/molIMRELarson and McMahon, 1985gas phase; B,M

Methyl cation + Carbonyl sulfide = (Methyl cation • Carbonyl sulfide)

By formula: CH3+ + COS = (CH3+ • COS)

Quantity Value Units Method Reference Comment
Δr239.kJ/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M

Carbonyl sulfide + Water = Carbon dioxide + Hydrogen sulfide

By formula: COS + H2O = CO2 + H2S

Quantity Value Units Method Reference Comment
Δr-33.4 ± 0.96kJ/molEqkTerres and Wesemann, 1932gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -35.66 kJ/mol; ALS

Carbonyl sulfide = Carbon monoxide + sulfur

By formula: COS = CO + S

Quantity Value Units Method Reference Comment
Δr32.5 ± 0.3kJ/molEqkBechtold, 1965gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 30.3 kJ/mol; ALS

(COS+ • Carbonyl sulfide) + Carbonyl sulfide = (COS+ • 2Carbonyl sulfide)

By formula: (COS+ • COS) + COS = (COS+ • 2COS)

Quantity Value Units Method Reference Comment
Δr6.7kJ/molPIOno, Osuch, et al., 1981gas phase; M

COS+ + Carbonyl sulfide = (COS+ • Carbonyl sulfide)

By formula: COS+ + COS = (COS+ • COS)

Quantity Value Units Method Reference Comment
Δr72.0kJ/molPIOno, Osuch, et al., 1981gas phase; M

CS2+ + Carbonyl sulfide = (CS2+ • Carbonyl sulfide)

By formula: CS2+ + COS = (CS2+ • COS)

Quantity Value Units Method Reference Comment
Δr24.kJ/molPIOno, Osuch, et al., 1981gas 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

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