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

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-55.965937
Energy at 298.15K 
HF Energy-55.460559
Nuclear repulsion energy101.448968
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-121G
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 3175 3099 0.13      
2 A1 3013 2941 6.60      
3 A1 1459 1424 6.54      
4 A1 1393 1359 1.10      
5 A1 1074 1048 41.35      
6 A1 811 792 76.25      
7 A1 583 569 4.59      
8 A1 342 334 27.98      
9 A1 204 199 3.31      
10 A2 3175 3099 0.00      
11 A2 1462 1427 0.00      
12 A2 984 960 0.00      
13 A2 228 222 0.00      
14 A2 154 150 0.00      
15 B1 3177 3101 1.22      
16 B1 1473 1437 20.98      
17 B1 1071 1046 66.30      
18 B1 912 891 87.34      
19 B1 270 264 2.02      
20 B1 178 174 0.97      
21 B2 3173 3097 0.60      
22 B2 3012 2939 0.91      
23 B2 1451 1416 9.05      
24 B2 1366 1334 0.01      
25 B2 986 963 12.56      
26 B2 677 661 25.90      
27 B2 329 321 57.33      

Unscaled Zero Point Vibrational Energy (zpe) 18066.1 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 17632.5 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-121G
ABC
0.12700 0.12099 0.11491

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.167
O2 -1.443 0.000 0.973
O3 1.443 0.000 0.973
C4 0.000 1.531 -0.959
C5 0.000 -1.531 -0.959
H6 0.000 2.378 -0.263
H7 0.000 -2.378 -0.263
H8 0.919 1.493 -1.555
H9 -0.919 1.493 -1.555
H10 -0.919 -1.493 -1.555
H11 0.919 -1.493 -1.555

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.65331.65331.90061.90062.41682.41682.45782.45782.45782.4578
O21.65332.88682.85672.85673.04433.04433.76892.98312.98313.7689
O31.65332.88682.85672.85673.04433.04432.98313.76893.76892.9831
C41.90062.85672.85673.06231.09623.97081.09641.09643.21643.2164
C51.90062.85672.85673.06233.97081.09623.21643.21641.09641.0964
H62.41683.04433.04431.09623.97084.75641.81631.81634.18334.1833
H72.41683.04433.04433.97081.09624.75644.18334.18331.81631.8163
H82.45783.76892.98311.09643.21641.81634.18331.83793.50602.9857
H92.45782.98313.76891.09643.21641.81634.18331.83792.98573.5060
H102.45782.98313.76893.21641.09644.18331.81633.50602.98571.8379
H112.45783.76892.98313.21641.09644.18331.81632.98573.50601.8379

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 104.271 S1 C4 H8 107.114
S1 C4 H9 107.114 S1 C5 H7 104.271
S1 C5 H10 107.114 S1 C5 H11 107.114
O2 S1 O3 121.632 O2 S1 C4 106.790
O2 S1 C5 106.790 O3 S1 C4 106.790
O3 S1 C5 106.790 C4 S1 C5 107.343
H6 C4 H8 111.869 H6 C4 H9 111.869
H7 C5 H10 111.869 H7 C5 H11 111.869
H8 C4 H9 113.895 H10 C5 H11 113.895
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability