Disulfur monoxide

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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.

Quantity Value Units Method Reference Comment
Δfgas-56.48kJ/molReviewChase, 1998Data last reviewed in September, 1965
Quantity Value Units Method Reference Comment
gas,1 bar266.89J/mol*KReviewChase, 1998Data last reviewed in September, 1965

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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 6000.
A 52.74890
B 4.576460
C -1.232311
D 0.104897
E -0.942963
F -75.59880
G 324.1110
H -56.48400
ReferenceChase, 1998
Comment Data last reviewed in September, 1965

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

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 + Disulfur monoxide = (Fluorine anion • Disulfur monoxide)

By formula: F- + OS2 = (F- • OS2)

Quantity Value Units Method Reference Comment
Δr184. ± 13.kJ/molIMRBLarson and McMahon, 1987gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M
Quantity Value Units Method Reference Comment
Δr155. ± 13.kJ/molIMRBLarson and McMahon, 1987gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B

Gas phase ion energetics 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 evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

Quantity Value Units Method Reference Comment
IE (evaluated)10.584 ± 0.005eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
1.8770 ± 0.0080LPESNimlos and Ellison, 1986B

Ionization energy determinations

IE (eV) Method Reference Comment
10.584 ± 0.005PIPECONorwood and Ng, 1989LL
10.58 ± 0.01PIBerkowitz, Eland, et al., 1977LLK
10.53 ± 0.02PEFrost, Lee, et al., 1973LLK
10.52PEBock, Solouki, et al., 1973LLK
10.62PEMcDowell, 1972LLK
10.3 ± 0.1EIHagemann, 1962RDSH
10.52PERosmus, Dacre, et al., 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
OS+13.745 ± 0.006SPIBerkowitz, Eland, et al., 1977LLK
SO+14.5 ± 0.2SEIHagemann, 1962RDSH

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics 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]

Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B., Trends in Gas Phase Fluoride Ion Affinities of the Main Group Oxyfluorides and Fluoride Sulfides. Fluoride Adducts of FAsO, FPO, FPO2, F2SiO, F4SO, FBO, F2SiS, FPS, FAsS, F2S2, and S2O., Inorg. Chem., 1987, 26, 24, 4018, https://doi.org/10.1021/ic00271a011 . [all data]

Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R., Bond dissociation energies of F2(-) and HF2(-). A gas-phase experimental and G2 theoretical study, J. Phys. Chem., 1995, 99, 7, 2002, https://doi.org/10.1021/j100007a034 . [all data]

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]

Norwood and Ng, 1989
Norwood, K.; Ng, C.Y., Photoion-photoelectron coincidence spectroscopy of the transient molecules SO and S2O, Chem. Phys. Lett., 1989, 156, 145. [all data]

Berkowitz, Eland, et al., 1977
Berkowitz, J.; Eland, J.H.D.; Appelman, E.H., Photoionization mass spectrometry and heat of formation of S2O, J. Chem. Phys., 1977, 66, 2183. [all data]

Frost, Lee, et al., 1973
Frost, D.C.; Lee, S.T.; McDowell, C.A., The HeI photoelectron spectrum of S2O, Chem. Phys. Lett., 1973, 22, 243. [all data]

Bock, Solouki, et al., 1973
Bock, H.; Solouki, B.; Rosmus, P.; Steudel, R., Photoelectron spectra and molecular properties: SSO and OSO, Angew. Chem. Int. Ed. Engl., 1973, 12, 933. [all data]

McDowell, 1972
McDowell, C.A., General disscussion, Faraday Discuss. Chem. Soc., 1972, 54, 68. [all data]

Hagemann, 1962
Hagemann, R., Determination de la chaleur de formation de S2O par spectrometrie de masse, Compt. Rend., 1962, 255, 1102. [all data]

Rosmus, Dacre, et al., 1974
Rosmus, P.; Dacre, P.D.; Solouki, B.; Bock, H., Hartree-Fock calculations photoelectron spectra of SSO NSF, Theor. Chim. Acta, 1974, 35, 129. [all data]


Notes

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