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Carbonyl sulfide

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Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafgas-33.081kcal/molReviewChase, 1998Data last reviewed in March, 1966
Deltafgas-33.21 ± 0.25kcal/molEqkBechtold, 1965Reanalyzed by Cox and Pilcher, 1970, Original value = -33.93 kcal/mol; ALS
Deltafgas-33.21 ± 0.25kcal/molEqkTerres and Wesemann, 1932Reanalyzed by Cox and Pilcher, 1970, Original value = -32.868 kcal/mol; ALS
Quantity Value Units Method Reference Comment
gas,1 bar55.347cal/mol*KReviewChase, 1998Data last reviewed in March, 1966

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1200.1200. - 6000.
A 8.25500014.41740
B 10.290100.415471
C -6.361791-0.050187
D 1.5150210.003372
E -0.078278-1.225831
F -36.20939-40.30371
G 62.0965168.74890
H -33.08009-33.08009
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1966 Data last reviewed in March, 1966

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, 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: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid32.579cal/mol*KN/AKemp and Giauque, 1937 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
17.03220.Kemp and Giauque, 1937T = 20 to 220 K.

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase 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 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

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

By formula: F- + COS = (F- bullet COS)

Quantity Value Units Method Reference Comment
Deltar31.8 ± 2.0kcal/molIMRELarson and McMahon, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar24.cal/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
Deltar24.6 ± 2.0kcal/molIMRELarson and McMahon, 1985gas phase; B,M

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

By formula: CH3+ + COS = (CH3+ bullet COS)

Quantity Value Units Method Reference Comment
Deltar57.2kcal/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 48.3 kcal/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
Deltar-7.99 ± 0.23kcal/molEqkTerres and Wesemann, 1932gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -8.522 kcal/mol; ALS

Carbonyl sulfide = Carbon monoxide + sulfur

By formula: COS = CO + S

Quantity Value Units Method Reference Comment
Deltar7.77 ± 0.06kcal/molEqkBechtold, 1965gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 7.25 kcal/mol; ALS

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

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

Quantity Value Units Method Reference Comment
Deltar1.6kcal/molPIOno, Osuch, et al., 1981gas phase; M

COS+ + Carbonyl sulfide = (COS+ bullet Carbonyl sulfide)

By formula: COS+ + COS = (COS+ bullet COS)

Quantity Value Units Method Reference Comment
Deltar17.2kcal/molPIOno, Osuch, et al., 1981gas phase; M

CS2+ + Carbonyl sulfide = (CS2+ bullet Carbonyl sulfide)

By formula: CS2+ + COS = (CS2+ bullet COS)

Quantity Value Units Method Reference Comment
Deltar5.8kcal/molPIOno, Osuch, et al., 1981gas phase; M

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [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]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [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]

Kemp and Giauque, 1937
Kemp, J.D.; Giauque, W.F., Carbonyl sulfide. The heat capacity, vapor pressure, and heats of fusion and vaporization. The third law of thermodynamics and orientation equilibrium in the solid, J. Am. Chem. Soc., 1937, 59, 79-84. [all data]

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]

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, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References