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All results from a given calculation for C2H6O2S (Dimethyl sulfone)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-56.454174
Energy at 298.15K 
HF Energy-55.717350
Nuclear repulsion energy107.869412
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3232 3069 4.56      
2 A1 3105 2948 7.29      
3 A1 1482 1407 3.65      
4 A1 1391 1321 15.69      
5 A1 1141 1084 179.98      
6 A1 1031 979 0.64      
7 A1 695 660 8.84      
8 A1 462 439 26.21      
9 A1 266 253 1.88      
10 A2 3237 3073 0.00      
11 A2 1474 1399 0.00      
12 A2 962 914 0.00      
13 A2 290 275 0.00      
14 A2 166 158 0.00      
15 B1 3240 3076 9.14      
16 B1 1489 1414 11.40      
17 B1 1315 1248 259.81      
18 B1 1014 963 0.62      
19 B1 349 332 1.59      
20 B1 210 199 0.56      
21 B2 3230 3067 0.03      
22 B2 3103 2946 1.74      
23 B2 1473 1398 7.27      
24 B2 1372 1302 11.93      
25 B2 974 925 58.69      
26 B2 763 724 39.89      
27 B2 444 421 38.93      

Unscaled Zero Point Vibrational Energy (zpe) 18955.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 17996.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/CEP-31G*
ABC
0.14592 0.13605 0.13414

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.194
O2 -1.293 0.000 0.925
O3 1.293 0.000 0.925
C4 0.000 1.420 -0.930
C5 0.000 -1.420 -0.930
H6 0.000 2.311 -0.282
H7 0.000 -2.311 -0.282
H8 0.913 1.395 -1.546
H9 -0.913 1.395 -1.546
H10 -0.913 -1.395 -1.546
H11 0.913 -1.395 -1.546

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.48571.48571.81121.81122.35942.35942.40952.40952.40952.4095
O21.48572.58702.67042.67042.91022.91023.59422.86262.86263.5942
O31.48572.58702.67042.67042.91022.91022.86263.59423.59422.8626
C41.81122.67042.67042.84061.10173.78711.10141.10143.02293.0229
C51.81122.67042.67042.84063.78711.10173.02293.02291.10141.1014
H62.35942.91022.91021.10173.78714.62191.80841.80844.02064.0206
H72.35942.91022.91023.78711.10174.62194.02064.02061.80841.8084
H82.40953.59422.86261.10143.02291.80844.02061.82593.33432.7899
H92.40952.86263.59421.10143.02291.80844.02061.82592.78993.3343
H102.40952.86263.59423.02291.10144.02061.80843.33432.78991.8259
H112.40953.59422.86263.02291.10144.02061.80842.78993.33431.8259

picture of Dimethyl sulfone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C4 H6 105.587 S1 C4 H8 109.200
S1 C4 H9 109.200 S1 C5 H7 105.587
S1 C5 H10 109.200 S1 C5 H11 109.200
O2 S1 O3 121.061 O2 S1 C4 107.776
O2 S1 C5 107.776 O3 S1 C4 107.776
O3 S1 C5 107.776 C4 S1 C5 103.283
H6 C4 H8 110.339 H6 C4 H9 110.339
H7 C5 H10 110.339 H7 C5 H11 110.339
H8 C4 H9 111.965 H10 C5 H11 111.965
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability