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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-56.515382
Energy at 298.15K 
HF Energy-55.729723
Nuclear repulsion energy108.167328
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 3215 3063 1.40      
2 A1 3089 2943 3.56      
3 A1 1496 1425 4.45      
4 A1 1400 1334 14.88      
5 A1 1138 1084 165.90      
6 A1 1035 986 2.01      
7 A1 692 660 9.17      
8 A1 463 441 25.76      
9 A1 265 253 1.99      
10 A2 3219 3067 0.00      
11 A2 1485 1415 0.00      
12 A2 963 918 0.00      
13 A2 291 277 0.00      
14 A2 179 170 0.00      
15 B1 3222 3070 3.78      
16 B1 1501 1430 14.10      
17 B1 1313 1251 253.57      
18 B1 1020 972 0.01      
19 B1 353 336 1.53      
20 B1 222 212 0.53      
21 B2 3214 3062 0.23      
22 B2 3087 2941 0.34      
23 B2 1486 1416 8.33      
24 B2 1380 1315 14.09      
25 B2 974 928 51.50      
26 B2 764 728 42.49      
27 B2 446 425 40.25      

Unscaled Zero Point Vibrational Energy (zpe) 18954.8 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 18060.1 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
0.14711 0.13610 0.13473

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 0.247
O2 -1.292 0.000 0.980
O3 1.292 0.000 0.980
C4 0.000 1.423 -0.865
C5 0.000 -1.423 -0.865
H6 0.000 2.302 -0.215
H7 0.000 -2.302 -0.215
H8 0.906 1.403 -1.474
H9 -0.906 1.403 -1.474
H10 -0.906 -1.403 -1.474
H11 0.906 -1.403 -1.474

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.48541.48541.80531.80532.34762.34762.39782.39782.39782.3978
O21.48542.58312.66392.66392.89762.89763.58062.85362.85363.5806
O31.48542.58312.66392.66392.89762.89762.85363.58063.58062.8536
C41.80532.66392.66392.84571.09273.78071.09201.09203.02903.0290
C51.80532.66392.66392.84573.78071.09273.02903.02901.09201.0920
H62.34762.89762.89761.09273.78074.60351.79271.79274.01594.0159
H72.34762.89762.89763.78071.09274.60354.01594.01591.79271.7927
H82.39783.58062.85361.09203.02901.79274.01591.81103.33902.8052
H92.39782.85363.58061.09203.02901.79274.01591.81102.80523.3390
H102.39782.85363.58063.02901.09204.01591.79273.33902.80521.8110
H112.39783.58062.85363.02901.09204.01591.79272.80523.33901.8110

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 105.560 S1 C4 H8 109.221
S1 C4 H9 109.221 S1 C5 H7 105.560
S1 C5 H10 109.221 S1 C5 H11 109.221
O2 S1 O3 120.799 O2 S1 C4 107.700
O2 S1 C5 107.700 O3 S1 C4 107.700
O3 S1 C5 107.700 C4 S1 C5 104.022
H6 C4 H8 110.291 H6 C4 H9 110.291
H7 C5 H10 110.291 H7 C5 H11 110.291
H8 C4 H9 112.040 H10 C5 H11 112.040
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability