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All results from a given calculation for CH3SOCH3 (Dimethyl sulfoxide)

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 CS 1A'
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-40.221610
Energy at 298.15K-40.228012
HF Energy-39.892035
Nuclear repulsion energy68.434752
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 A' 3206 3098 12.57 80.74 0.73 0.84
2 A' 3197 3089 37.01 98.63 0.73 0.84
3 A' 3055 2952 28.81 250.82 0.01 0.01
4 A' 1483 1433 24.77 4.51 0.74 0.85
5 A' 1464 1415 5.98 18.62 0.73 0.84
6 A' 1404 1356 2.56 4.80 0.06 0.12
7 A' 1053 1018 22.93 16.62 0.69 0.82
8 A' 1024 990 12.90 9.40 0.74 0.85
9 A' 768 742 52.32 9.32 0.73 0.85
10 A' 613 592 5.77 58.53 0.11 0.19
11 A' 296 286 7.61 4.95 0.55 0.71
12 A' 241 233 1.76 4.13 0.74 0.85
13 A' 177 171 0.58 0.19 0.64 0.78
14 A" 3205 3097 4.48 45.39 0.75 0.86
15 A" 3195 3087 0.23 10.23 0.75 0.86
16 A" 3055 2952 22.16 2.94 0.75 0.86
17 A" 1471 1421 1.47 23.20 0.75 0.86
18 A" 1453 1404 9.87 5.49 0.75 0.86
19 A" 1377 1331 0.17 0.35 0.75 0.86
20 A" 984 951 0.13 19.21 0.75 0.86
21 A" 939 908 1.37 1.25 0.75 0.86
22 A" 659 637 5.18 34.40 0.75 0.86
23 A" 259 250 12.89 6.94 0.75 0.86
24 A" 106 102 0.05 0.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17341.0 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 16756.6 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
0.20340 0.19806 0.12473

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.309 0.459 0.000
O2 -1.305 1.027 0.000
C3 0.309 -0.795 1.440
C4 0.309 -0.795 -1.440
H5 1.268 -1.351 1.461
H6 1.268 -1.351 -1.461
H7 0.180 -0.195 2.359
H8 0.180 -0.195 -2.359
H9 -0.559 -1.465 1.294
H10 -0.559 -1.465 -1.294

Atom - Atom Distances (Å)
  S1 O2 C3 C4 H5 H6 H7 H8 H9 H10
S11.71131.90981.90982.51542.51542.45202.45202.47622.4762
O21.71132.82832.82833.79543.79543.04383.04382.90522.9052
C31.90982.82832.88091.10813.10541.10493.84911.10672.9465
C41.90982.82832.88093.10541.10813.84911.10492.94651.1067
H52.51543.79541.10813.10542.92131.82404.13671.83803.3076
H62.51543.79543.10541.10812.92134.13671.82403.30761.8380
H72.45203.04381.10493.84911.82404.13674.71901.81453.9380
H82.45203.04383.84911.10494.13671.82404.71903.93801.8145
H92.47622.90521.10672.94651.83803.30761.81453.93802.5885
H102.47622.90522.94651.10673.30761.83803.93801.81452.5885

picture of Dimethyl sulfoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C3 H5 110.066 S1 C3 H7 105.734
S1 C3 H9 107.337 S1 C4 H6 110.066
S1 C4 H8 105.734 S1 C4 H10 107.337
O2 S1 C3 102.579 O2 S1 C4 102.579
C3 S1 C4 97.920 H5 C3 H7 111.014
H5 C3 H9 112.168 H6 C4 H8 111.014
H6 C4 H10 112.168 H7 C3 H9 110.256
H8 C4 H10 110.256
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability