Disulfur monoxide

Formula: OS₂
Molecular weight: 80.129
IUPAC Standard InChI: InChI=1S/OS2/c1-3-2
IUPAC Standard InChIKey: TXKMVPPZCYKFAC-UHFFFAOYSA-N
CAS Registry Number: 20901-21-7
Chemical structure:
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Vibrational and/or electronic energy levels

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Data compiled by: Marilyn E. Jacox

State: C

Energy (cm^-1)	Med.	Transition	λ_min (nm)	λ_max (nm)	References


T_o = 29687.72	gas	C-X	250	395	Jones, 1950
					Lakshminarayana, 1975
					Hallin, Merer, et al., 1977
					Chiu, Sung, et al., 1982
					Tsukiyama, Kobayashi, et al., 1984
					Clouthier and Rutherford, 1988
					Zhang, Dupre, et al., 1995
					Muller, Vaccaro, et al., 1999
T_o = 29285 ± 20	Xe	C-X	280	342	Phillips, Smith, et al., 1969

Vib. sym.	No.	Approximate type of mode	cm^-1	Med.	Method	References


a'	1	SO stretch	1033.9 ± 0.6	gas	AB LF	Hallin, Merer, et al., 1977 Tsukiyama, Kobayashi, et al., 1984 Clouthier and Rutherford, 1988 Muller, Vaccaro, et al., 1999
	2	Bend	253.8 ± 0.6	gas	AB LF	Hallin, Merer, et al., 1977 Tsukiyama, Kobayashi, et al., 1984 Clouthier and Rutherford, 1988 Muller, Vaccaro, et al., 1999
	3	SS stretch	410.6	gas	AB LF	Lakshminarayana, 1975 Hallin, Merer, et al., 1977 Tsukiyama, Kobayashi, et al., 1984 Clouthier and Rutherford, 1988 Zhang, Dupre, et al., 1995 Muller, Vaccaro, et al., 1999
	3	SS stretch	415 ± 20	Xe	AB	Phillips, Smith, et al., 1969

State: a

Energy (cm^-1)	Med.	Transition	λ_min (nm)	λ_max (nm)	References


T_o = 13943	gas	a-X	430	670	Dixon, Haner, et al., 1977
					Tsukiyama, Kobayashi, et al., 1984
					Clouthier, 1987

Vib. sym.	No.	Approximate type of mode	cm^-1	Med.	Method	References


a'	1	SO stretch	1089	gas	AB	Dixon, Haner, et al., 1977 Clouthier, 1987
	2	Bend	332	gas	AB	Dixon, Haner, et al., 1977 Clouthier, 1987
	3	SS stretch	505	gas	AB	Dixon, Haner, et al., 1977 Clouthier, 1987

State: X

Vib. sym.	No.	Approximate type of mode	cm^-1	Med.	Method	References


a'	1	SO stretch	1166.45	gas	DL LF	Jones, 1950 Blukis and Myers, 1965 Lindemayer and Jones, 1985 Muller, Vaccaro, et al., 1999
	1	SO stretch	1157.6	Ar	IR Ra	Hopkins, Daly, et al., 1975 Tang and Brown, 1975 Lo, Wu, et al., 2002
	1	SO stretch	1155.0	N₂	IR	Lo, Wu, et al., 2002
	2	Bend	380	gas	LF	Clouthier and Rutherford, 1988 Muller, Vaccaro, et al., 1999
	2	Bend	370 ± 30	gas	MW	Meschi and Myers, 1959
	2	Bend	382	Ar	IR Ra	Hopkins, Daly, et al., 1975 Tang and Brown, 1975
	3	SS stretch	679.1	gas	IR LF	Jones, 1950 Blukis and Myers, 1965 Tsukiyama, Kobayashi, et al., 1984 Muller, Vaccaro, et al., 1999
	3	SS stretch	672.5	Ar	IR Ra	Hopkins, Daly, et al., 1975 Tang and Brown, 1975 Lo, Wu, et al., 2002
	3	SS stretch	675.1	N₂	IR	Lo, Wu, et al., 2002

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

Energy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Vibrational and/or electronic energy levels, Notes

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, Vibrational and/or electronic energy levels, References

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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