Sulfurous acid, dimethyl ester

Formula: C₂H₆O₃S
Molecular weight: 110.132
IUPAC Standard InChI: InChI=1S/C2H6O3S/c1-4-6(3)5-2/h1-2H3
IUPAC Standard InChIKey: BDUPRNVPXOHWIL-UHFFFAOYSA-N
CAS Registry Number: 616-42-2
Chemical structure:
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Other names: Dimethyl sulfite; Methyl sulfite; Sulphurous acid dimethyl ester; Dimethyl sulphite; (CH3O)2SO; Dimethoxy sulfoxide; Dimethyl ester of sulfurous acid
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Condensed phase thermochemistry data

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Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_liquid	-125.07 ± 0.25	kcal/mol	Ccb	Mackle and Steele, 1969
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_liquid	-411.86 ± 0.23	kcal/mol	Ccb	Mackle and Steele, 1969	Reanalyzed by Cox and Pilcher, 1970, Original value = -410.97 ± 0.23 kcal/mol

Gas phase ion energetics data

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Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV)	Method	Reference	Comment
9.9	PE	Bock and Solouki, 1974	LLK
10.25	PE	Bock and Solouki, 1974	Vertical value; LLK
10.25	PE	Bock and Solouki, 1972	Vertical value; LLK

References

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Mackle and Steele, 1969
Mackle, H.; Steele, W.V., Studies in the thermochemistry of organic sulphites and sulphates. Part 1.-Heats of combustion and formation of some dialkyl sulphites and sulphates, Trans. Faraday Soc., 1969, 65, 2053-2059. [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]

Bock and Solouki, 1974
Bock, H.; Solouki, B., Photoelektronenspektren und molekuleigenschaften, XXXV. Sulfoxide X₂SO - beispiele fur den nutzen von korrelations - diagrammen bei der diskussion von substituenteneffekten und von geometrischen storungen, Chem. Ber., 1974, 107, 2299. [all data]

Bock and Solouki, 1972
Bock, H.; Solouki, B., The sulfoxide bond, Angew. Chem. Int. Ed. Engl., 1972, 11, 436. [all data]

Notes

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Symbols used in this document:

Δ_cH°_liquid Enthalpy of combustion of liquid at standard conditions

Δ_fH°_liquid Enthalpy of formation of liquid at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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Δ_cH°_liquid	Enthalpy of combustion of liquid at standard conditions
Δ_fH°_liquid	Enthalpy of formation of liquid at standard conditions