Disulfur monoxide

• Formula: OS₂
• Molecular weight: 80.129
• IUPAC Standard InChI: InChI=1S/OS2/c1-3-2 Copy

  
• IUPAC Standard InChIKey: TXKMVPPZCYKFAC-UHFFFAOYSA-N Copy
• CAS Registry Number: 20901-21-7
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Information on this page:
  • Gas phase thermochemistry data
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
• Data at other public NIST sites:
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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.

Gas Phase Heat Capacity (Shomate Equation)

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

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Vibrational and/or electronic energy levels

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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: Marilyn E. Jacox

State:   C

State:   a

State:   X

Additional references: Jacox, 1994, page 105; Jacox, 1998, page 199; Jacox, 2003, page 143; Cook, Winnewisser, et al., 1973; Tiemann, Hoeft, et al., 1974; Thorwirth, Theule, et al., 2006

Notes

References

Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, 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]

Jones, 1950
Jones, A.V., Infra-Red and Ultraviolet Spectra of Sulphur Monoxide, J. Chem. Phys., 1950, 18, 9, 1263, https://doi.org/10.1063/1.1747922 . [all data]

Lakshminarayana, 1975
Lakshminarayana, G., Ultraviolet band systems of S2O, J. Mol. Spectrosc., 1975, 55, 1-3, 141, https://doi.org/10.1016/0022-2852(75)90259-3 . [all data]

Hallin, Merer, et al., 1977
Hallin, K.-E.J.; Merer, A.J.; Milton, D.J., Rotational analysis of bands of the 3400 Å system of disulphur monoxide (S, Can. J. Phys., 1977, 55, 21, 1858, https://doi.org/10.1139/p77-226 . [all data]

Chiu, Sung, et al., 1982
Chiu, C.L.; Sung, P.C.; Chen, L.D., Excitation and fluorescence spectra of disulfur monoxide, J. Mol. Spectrosc., 1982, 94, 2, 343, https://doi.org/10.1016/0022-2852(82)90010-8 . [all data]

Tsukiyama, Kobayashi, et al., 1984
Tsukiyama, K.; Kobayashi, D.; Obi, K.; Tanaka, I., The ultraviolet bands of S2O studied by LIF and optical-optical double-resonance spectroscopy, Chem. Phys., 1984, 84, 3, 337, https://doi.org/10.1016/0301-0104(84)85183-6 . [all data]

Clouthier and Rutherford, 1988
Clouthier, D.J.; Rutherford, M.L., Supersonic jet spectroscopy of S2O, Chem. Phys., 1988, 127, 1-3, 189, https://doi.org/10.1016/0301-0104(88)87117-9 . [all data]

Zhang, Dupre, et al., 1995
Zhang, Q.; Dupre, P.; Grzybowski, B.; Vaccaro, P.H., Laser-induced fluorescence studies of jet-cooled S2O: Axis-switching and predissociation effects, J. Chem. Phys., 1995, 103, 1, 67, https://doi.org/10.1063/1.469623 . [all data]

Muller, Vaccaro, et al., 1999
Muller, T.; Vaccaro, P.H.; Perez-Bernal, F.; Iachello, F., The vibronically-resolved emission spectrum of disulfur monoxide (S[sub 2]O): An algebraic calculation and quantitative interpretation of Franck--Condon transition intensities, J. Chem. Phys., 1999, 111, 11, 5038, https://doi.org/10.1063/1.479786 . [all data]

Phillips, Smith, et al., 1969
Phillips, L.F.; Smith, J.J.; Meyer, B., The ultraviolet spectra of matrix isolated disulfur monoxide and sulfur dioxide, J. Mol. Spectrosc., 1969, 29, 1-3, 230, https://doi.org/10.1016/0022-2852(69)90102-7 . [all data]

Dixon, Haner, et al., 1977
Dixon, R.N.; Haner, D.A.; Webster, C.R., Optoacoustic spectroscopy with a tunable cw dye laser: forbidden transitions in some unstable sulphur compounds, Chem. Phys., 1977, 22, 2, 199, https://doi.org/10.1016/0301-0104(77)87003-1 . [all data]

Clouthier, 1987
Clouthier, D.J., The visible absorption spectrum of S2O, J. Mol. Spectrosc., 1987, 124, 1, 179, https://doi.org/10.1016/0022-2852(87)90131-7 . [all data]

Blukis and Myers, 1965
Blukis, U.; Myers, R.J., Disulfur Monoxide. III. Its Infrared Spectrum and Thermodynamic Functions, J. Phys. Chem., 1965, 69, 4, 1154, https://doi.org/10.1021/j100888a011 . [all data]

Lindemayer and Jones, 1985
Lindemayer, J.; Jones, H., The diode-laser spectrum of the ν1 band of disulfur monoxide, J. Mol. Spectrosc., 1985, 112, 1, 71, https://doi.org/10.1016/0022-2852(85)90192-4 . [all data]

Hopkins, Daly, et al., 1975
Hopkins, A.G.; Daly, F.P.; Brown, C.W., Infrared spectra of matrix isolated disulfur monoxide isotopes, J. Phys. Chem., 1975, 79, 17, 1849, https://doi.org/10.1021/j100584a018 . [all data]

Tang and Brown, 1975
Tang, S.-Y.; Brown, C.W., Raman spectrum of matrix-isolated disulfur monoxide. Evidence for the formation of trisulfur and sulfurdioxide from disulfur monoxide, Inorg. Chem., 1975, 14, 11, 2856, https://doi.org/10.1021/ic50153a055 . [all data]

Lo, Wu, et al., 2002
Lo, W.-J.; Wu, Y.-J.; Lee, Y.-P., Isomers of S[sub 2]O: Infrared absorption spectra of cyclic S[sub 2]O in solid Ar, J. Chem. Phys., 2002, 117, 14, 6655, https://doi.org/10.1063/1.1506155 . [all data]

Meschi and Myers, 1959
Meschi, D.J.; Myers, R.J., The microwave spectrum, structure, and dipole moment of disulfur monoxide, J. Mol. Spectrosc., 1959, 3, 1-6, 405, https://doi.org/10.1016/0022-2852(59)90036-0 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]

Cook, Winnewisser, et al., 1973
Cook, R.L.; Winnewisser, G.; Lindsey, D.C., The centrifugal distortion constants of disulfur monoxide, J. Mol. Spectrosc., 1973, 46, 2, 276, https://doi.org/10.1016/0022-2852(73)90042-8 . [all data]

Tiemann, Hoeft, et al., 1974
Tiemann, E.; Hoeft, J.; Lovas, F.J.; Johnson, D.R., Spectroscopic studies of the SO2 discharge system. I. The microwave spectrum and structure of S2O, J. Chem. Phys., 1974, 60, 12, 5000, https://doi.org/10.1063/1.1681014 . [all data]

Thorwirth, Theule, et al., 2006
Thorwirth, S.; Theule, P.; Gottlieb, C.A.; Muller, H.S.P.; McCarthy, M.C.; Thaddeus, P., Rotational spectroscopy of S2O: Vibrational satellites, 33S isotopomers, and the sub-millimeter-wave spectrum, J. Mol. Struct., 2006, 795, 1-3, 219, https://doi.org/10.1016/j.molstruc.2006.02.055 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  ΔfH°gas	Enthalpy of formation of gas at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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