return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-545.354320
Energy at 298.15K-545.360540
HF Energy-545.181120
Nuclear repulsion energy174.595261
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/STO-3G
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' 3557 3101 0.15 51.12 0.73 0.85
2 A' 3550 3095 1.20 41.95 0.73 0.84
3 A' 3356 2926 0.28 61.39 0.00 0.01
4 A' 1710 1491 5.43 2.26 0.68 0.81
5 A' 1699 1482 0.91 23.93 0.73 0.85
6 A' 1543 1346 1.11 1.15 0.71 0.83
7 A' 1104 962 15.81 8.87 0.61 0.76
8 A' 1053 918 8.17 7.53 0.74 0.85
9 A' 789 688 0.56 16.39 0.07 0.13
10 A' 511 446 85.84 31.43 0.12 0.22
11 A' 332 289 5.69 1.53 0.42 0.59
12 A' 278 242 3.29 3.87 0.46 0.63
13 A' 162 141 0.41 0.28 0.54 0.70
14 A" 3556 3100 0.03 12.30 0.75 0.86
15 A" 3550 3095 0.00 5.53 0.75 0.86
16 A" 3357 2927 0.71 1.37 0.75 0.86
17 A" 1706 1488 0.91 26.80 0.75 0.86
18 A" 1696 1479 2.45 6.60 0.75 0.86
19 A" 1522 1327 10.87 1.37 0.75 0.86
20 A" 1020 890 1.05 5.72 0.75 0.86
21 A" 999 871 0.72 0.31 0.75 0.86
22 A" 757 660 21.27 28.99 0.75 0.86
23 A" 262 228 3.64 5.37 0.75 0.86
24 A" 131 114 0.07 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19099.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 16653.0 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/STO-3G
ABC
0.21403 0.20169 0.12791

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.293 0.459 0.000
O2 -1.243 1.103 0.000
C3 0.293 -0.817 1.377
C4 0.293 -0.817 -1.377
H5 1.178 -1.470 1.289
H6 1.178 -1.470 -1.289
H7 0.325 -0.284 2.342
H8 0.325 -0.284 -2.342
H9 -0.628 -1.425 1.333
H10 -0.628 -1.425 -1.333

Atom - Atom Distances (Å)
  S1 O2 C3 C4 H5 H6 H7 H8 H9 H10
S11.66551.87701.87702.48292.48292.45702.45702.48412.4841
O21.66552.81802.81803.76073.76073.14113.14112.92332.9233
C31.87702.81802.75381.10332.88421.10283.75691.10382.9256
C41.87702.81802.75382.88421.10333.75691.10282.92561.1038
H52.48293.76071.10332.88422.57871.80053.91411.80623.1837
H62.48293.76072.88421.10332.57873.91411.80053.18371.8062
H72.45703.14111.10283.75691.80053.91414.68381.79623.9638
H82.45703.14113.75691.10283.91411.80054.68383.96381.7962
H92.48412.92331.10382.92561.80623.18371.79623.96382.6656
H102.48412.92332.92561.10383.18371.80623.96381.79622.6656

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 110.121 S1 C3 H7 108.270
S1 C3 H9 110.181 S1 C4 H6 110.121
S1 C4 H8 108.270 S1 C4 H10 110.181
O2 S1 C3 105.244 O2 S1 C4 105.244
C3 S1 C4 94.375 H5 C3 H7 109.405
H5 C3 H9 109.849 H6 C4 H8 109.405
H6 C4 H10 109.849 H7 C3 H9 108.982
H8 C4 H10 108.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability