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Experimental data for C2H6O2S (Dimethyl sulfone)

22 02 02 11 45
Other names
Dimethyl sulfone; Dimethyl sulphone; Methane, sulfonylbis-; Methyl sulfone; Methylsulfonylmethane; Sulphonylbismethane; (methylsulfonyl)methane;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H6O2S/c1-5(2,3)4/h1-2H3 HHVIBTZHLRERCL-UHFFFAOYSA-N C[S](C)(=O)=O (methylsulfonyl)methane
State Conformation
1A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -372.79 3.35 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   3.35 kJ mol-1 webbook
Entropy (298.15K) entropy     J K-1 mol-1  
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1 3018   1970McL/Car:1121       B1 & B2 reversed
2 A1 2936   1970McL/Car:1121      
3 A1 1451   1970McL/Car:1121      
4 A1 1337   1970McL/Car:1121      
5 A1 1121   1970McL/Car:1121      
6 A1 1013   1970McL/Car:1121      
7 A1 703   1970McL/Car:1121      
8 A1 496   1970McL/Car:1121      
9 A1 294   1970McL/Car:1121      
10 A2 3024   1970McL/Car:1121      
11 A2 1405   1970McL/Car:1121      
12 A2 937   1970McL/Car:1121      
13 A2 326   1970McL/Car:1121      
14 A2             CH3 torsion
15 B1 3025   1970McL/Car:1121       B1 & B2 reversed
16 B1 1428   1970McL/Car:1121       B1 & B2 reversed
17 B1 1269   1970McL/Car:1121       B1 & B2 reversed
18 B1 986   1970McL/Car:1121       B1 & B2 reversed
19 B1 396   1970McL/Car:1121       B1 & B2 reversed
20 B1 262   1970McL/Car:1121       B1 & B2 reversed
21 B2 3017   1970McL/Car:1121       B1 & B2 reversed
22 B2 2936   1970McL/Car:1121       B1 & B2 reversed
23 B2 1438   1970McL/Car:1121       B1 & B2 reversed
24 B2 1322   1970McL/Car:1121       B1 & B2 reversed
25 B2 958   1970McL/Car:1121       B1 & B2 reversed
26 B2 771   1970McL/Car:1121       B1 & B2 reversed
27 B2 465   1970McL/Car:1121       B1 & B2 reversed

vibrational zero-point energy: 18167.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for C2H6O2S (Dimethyl sulfone).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.15471 0.14328 0.13933 1972Sai/Mak:92

Calculated rotational constants for C2H6O2S (Dimethyl sulfone).
Product of moments of inertia moments of inertia
1551034amu3Å6   7.102142401791E-114gm3 cm6
Geometric Data
picture of Dimethyl sulfone

Point Group C2v


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCS 1.777 0.006 1 4 1998Kuc r0
rSO 1.431 0.004 1 2 1998Kuc r0
rCH 1.091   4 6 1998Kuc !assumed, r0
aCSC 103.3 0.2 4 1 5 1998Kuc r0
aOSO 121 0.3 2 1 3 1998Kuc r0
aHCH 109.6 6 4 8 1998Kuc !assumed
aCSO 107.8 2 1 4 1972Sai/Mak:92 by symmetry

These cartesians were determined using some assumed coordinate values. Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C2H6O2S (Dimethyl sulfone).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 6
C-S 2
O=S 2

Connectivity
Atom 1 Atom 2
S1 O2
S1 O3
S1 C4
S1 C5
C4 H6
C4 H8
C4 H9
C5 H7
C5 H10
C5 H11
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
    10.650   webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1 C2v True       4.490 NSRDS-NBS10 DR C2v 1 2
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for C2H6O2S (Dimethyl sulfone).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1 C2v True       C2v 1 2

Calculated electric quadrupole moments for C2H6O2S (Dimethyl sulfone).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
8.401   1998Gus/Rui:163

Calculated electric dipole polarizability for C2H6O2S (Dimethyl sulfone).

References
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squib reference DOI
1970McL/Car:1121 McLachlan and Carter. Vibrational spectra of crystalline dimethyl sulfone. Spectrochimica Acta. Vol. 26A. Pgs. 1121-1127. 10.1016/0584-8539(70)80016-2
1972Sai/Mak:92 S. Saito, F Makino "The Microwave Spectrum of Dimethyl Sulfone" Bull. Chem. Soc. Japan 45, 92-94, 1972 10.1246/bcsj.45.92
1998Gus/Rui:163 M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 10.1016/S0022-2860(97)00292-5
1998Kuc K Kuchitsu(ed) "Structure of Free Polyatomic Molecules - Basic Data" Springer, Berlin, 1998 10.1007/978-3-642-45748-7 
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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