Disulfide, dimethyl

• Formula: C₂H₆S₂
• Molecular weight: 94.199
• IUPAC Standard InChI: InChI=1S/C2H6S2/c1-3-4-2/h1-2H3 Copy

  
• IUPAC Standard InChIKey: WQOXQRCZOLPYPM-UHFFFAOYSA-N Copy
• CAS Registry Number: 624-92-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: 2,3-Dithiabutane; Methyl disulfide; (Methyldithio)methane; Dimethyl disulfide; Dimethyl disulphide; (CH3S)2; UN 2381; DMDS; Sulfa-Hitech; NSC 9370; (Methyldisulfanyl)methane
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• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
  • IR Spectrum
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Gas phase thermochemistry data

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), References, Notes

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:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
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

View reactions leading to C₂H₆S₂⁺ (ion structure unspecified)

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

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

Voronkov, Klyuchnikov, et al., 1989
Voronkov, M.G.; Klyuchnikov, V.A.; Kolabin, S.N.; Shvets, G.N.; Varusin, P.I.; Deryagina, E.N.; Korchevin, N.A.; Tsvetnitskaya, S.I., Thermochemical properties of diorganyl chalcogenides and dichalcogenides RM_nR(M = S, Se, Te; n = 1, 2)., Dokl. Phys. Chem. (Engl. Transl.), 1989, 307, 650-653, In original 1139. [all data]

Hawari, Griller, et al., 1986
Hawari, J.A.; Griller, D.; Lossing, F.P., Thermochemistry of perthiyl radicals, J. Am. Chem. Soc., 1986, 108, 3273-3275. [all data]

Hubbard, Douslin, et al., 1958
Hubbard, W.N.; Douslin, D.R.; McCullough, J.P.; Scott, D.W.; Todd, S.S.; Messerly, J.F.; Hossenlopp, I.A.; George, A.; Waddington, G., 2,3-dithiabutane, 3,4-dithiahexane and 4,5-dithiaoctane: Chemical thermodynamic properties from 0 to 1000°K, J. Am. Chem. Soc., 1958, 80, 3547-3554. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Carles, Lecomte, et al., 2001
Carles, S.; Lecomte, F.; Schermann, J.P.; Desfrancois, C.; Xu, S.; Nilles, J.M.; Bowen, K.H.; Berges, J.; Houe, Nondissociative electron capture by disulfide bonds, J. Phys. Chem. A, 2001, 105, 23, 5622-5626, https://doi.org/10.1021/jp0040603 . [all data]

Rinden, Maricq, et al., 1989
Rinden, E.; Maricq, M.M.; Grabowski, J.J., Gas-Phase Ion-Molecule Reactions of the Nitric Oxide Anion, J. Am. Chem. Soc., 1989, 111, 4, 1203, https://doi.org/10.1021/ja00186a006 . [all data]

Leeck and Kenttamaa, 1994
Leeck, D.T.; Kenttamaa, H.I., Heat of formation of the radical cation of dimethyl disulfide, Org. Mass Spectrom., 1994, 29, 106. [all data]

Li, Chiu, et al., 1993
Li, W.-K.; Chiu, S.-W.; Ma, Z.-X.; Liao, C.L.; Ng, C.Y., Adiabatic ionization energy of CH₃SSCH₃, J. Chem. Phys., 1993, 99, 8440. [all data]

Butler, Baer, et al., 1983
Butler, J.J.; Baer, T.; Evans, S.A., Jr., Energetics and structures of organosulfur ions: CH₃SSCH₃⁺, CH₃SS⁺, C₂H₅S⁺, and CH₂SH⁺, J. Am. Chem. Soc., 1983, 105, 3451. [all data]

Colton and Rabalais, 1974
Colton, R.J.; Rabalais, J.W., Photoelectron electronic absorption spectra of SCl₂, S₂Cl₂, S₂Br₂ and (CH₃)₂S₂, J. Electron Spectrosc. Relat. Phenom., 1974, 3, 345. [all data]

Cullen, Frost, et al., 1969
Cullen, W.R.; Frost, D.C.; Vroom, D.A., Ionization potentials of some sulfur compounds, Inorg. Chem., 1969, 8, 1803. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Chang, Young, et al., 1986
Chang, F.C.; Young, V.Y.; Prather, J.W.; Cheng, K.L., Study of methyl chalcogen compounds with ultraviolet photoelectron spectroscopy, J. Electron Spectrosc. Relat. Phenom., 1986, 40, 363. [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Kobayashi, 1978
Kobayashi, T., A new rule for photoelectron angular distributions of molecules, Phys. Lett. A, 1978, 69, 31. [all data]

Kimura and Osafune, 1975
Kimura, K.; Osafune, K., Photoelectron spectroscopic study of skew compounds. III. N,N'-dimethylhydrazine, dimethyl peroxide, and dimethyl disulfide, Bull. Chem. Soc. Jpn., 1975, 48, 2421. [all data]

Guimon, Guimon, et al., 1975
Guimon, M.-F.; Guimon, C.; Pfister-Guillouzo, G., Application of photoelectron spectroscopy to conformational analysis of 1,2,4-trithiolanes, Tetrahedron Lett., 1975, 7, 441. [all data]

Wagner and Bock, 1974
Wagner, G.; Bock, H., Photoelektronenspektren und molekuleigenschaften, XXVI. Die delokalisation von schwefel-elektronenpaaren in alkylsulfiden und -disulfiden, Chem. Ber., 1974, 107, 68. [all data]

Baker, Brisk, et al., 1974
Baker, A.D.; Brisk, M.; Gellender, M., Photoelectron spectra and dihedral angles of disulfides, J. Electron Spectrosc. Relat. Phenom., 1974, 3, 227. [all data]

Kroto and Suffolk, 1972
Kroto, H.W.; Suffolk, R.J., The photoelectron spectrum of an unstable species in the pyrolysis products of dimethyldisulphide, Chem. Phys. Lett., 1972, 15, 545. [all data]

Bock, Wagner, et al., 1972
Bock, H.; Wagner, G.; Kroner, J., Photoelektronenspektren und molekuleigenschaften, XIV. Die delokalisation des schwefel-elektronenpaar in CH₃S-substituierten aromaten, Chem. Ber., 1972, 105, 3850. [all data]

Cullen, Frost, et al., 1970
Cullen, W.R.; Frost, D.C.; Pun, M.T., Mass spectra, appearance potentials, heats of formation, and bond energies of some alkyl and perfluoroalkyl sulfides, Inorg. Chem., 1970, 9, 1976. [all data]

Palmer and Lossing, 1962
Palmer, T.F.; Lossing, F.P., Free radicals by mass spectrometry. XXVIII. The HS, CH₃S, and phenyl-S radicals: ionization potentials and heats of formation, J. Am. Chem. Soc., 1962, 84, 4661. [all data]

Gowenlock, Kay, et al., 1963
Gowenlock, B.G.; Kay, J.; Majer, J.R., Electron impact studies of some sulphides and disulphides, J. Chem. Soc. Faraday Trans., 1963, 59, 2463. [all data]

Ma, Liao, et al., 1994
Ma, Z.-X.; Liao, C.L.; Ng, C.Y.; Cheung, Y.-S.; Li, W.-K.; Baer, T., Experimental and theoretical studies of isomeric CH₃S₂ and CH₃S₂⁺, J. Chem. Phys., 1994, 100, 4870. [all data]

Gal'perin, Bogolyubov, et al., 1969
Gal'perin, Ya.V.; Bogolyubov, G.M.; Grishin, N.N.; Petrov, A.A., Organic derivatives of elements of groups V and VI. VI. Mass spectra of compounds with S-S bonds, Zh. Obshch. Khim., 1969, 39, 1599, In original 1567. [all data]

Amos, Gillis, et al., 1969
Amos, D.; Gillis, R.G.; Occolowitz, J.L.; Pisani, J.F., The ions [CH₃S]⁺, [C₂H₅S]⁺ and [CH₃O]⁺ formed by electron-impact, Org. Mass Spectrom., 1969, 2, 209. [all data]

Hobrock and Kiser, 1962
Hobrock, B.G.; Kiser, R.W., Electron impact spectroscopy of sulfur compounds. I. 2-Thiabutane, 2-thiapentane, and 2,3-dithiabutane, J. Phys. Chem., 1962, 66, 1648. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  ΔfH(+) ion,0K	Enthalpy of formation of positive ion at 0K
  ΔfH°gas	Enthalpy of formation of gas at standard conditions

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