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 C2H6O2S (Dimethyl sulfone)

using model chemistry: CCD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-627.436207
Energy at 298.15K 
HF Energy-626.455357
Nuclear repulsion energy275.956859
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 CCD/6-31G(2df,p)
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 3226 3055 0.15      
2 A1 3118 2953 0.55      
3 A1 1490 1411 1.59      
4 A1 1395 1321 27.01      
5 A1 1222 1158 153.14      
6 A1 1032 978 3.16      
7 A1 724 686 9.60      
8 A1 509 483 26.99      
9 A1 277 263 2.40      
10 A2 3230 3060 0.00      
11 A2 1477 1399 0.00      
12 A2 954 904 0.00      
13 A2 298 283 0.00      
14 A2 184 174 0.00      
15 B1 3234 3064 1.09      
16 B1 1497 1418 0.63      
17 B1 1429 1353 238.31      
18 B1 1016 962 2.06      
19 B1 363 344 0.42      
20 B1 218 206 0.41      
21 B2 3224 3054 0.77      
22 B2 3115 2951 0.40      
23 B2 1480 1402 4.89      
24 B2 1379 1306 16.11      
25 B2 969 918 80.23      
26 B2 780 738 31.70      
27 B2 469 444 37.89      

Unscaled Zero Point Vibrational Energy (zpe) 19154.4 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 18143.1 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 CCD/6-31G(2df,p)
ABC
0.15429 0.14347 0.13950

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.193
O2 -1.246 0.000 0.905
O3 1.246 0.000 0.905
C4 0.000 1.392 -0.910
C5 0.000 -1.392 -0.910
H6 0.000 2.277 -0.274
H7 0.000 -2.277 -0.274
H8 0.900 1.373 -1.523
H9 -0.900 1.373 -1.523
H10 -0.900 -1.373 -1.523
H11 0.900 -1.373 -1.523

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.43521.43521.77601.77602.32482.32482.37452.37452.37452.3745
O21.43522.49262.60472.60472.85132.85133.51922.81002.81003.5192
O31.43522.49262.60472.60472.85132.85132.81003.51923.51922.8100
C41.77602.60472.60472.78361.09013.72381.08901.08902.97132.9713
C51.77602.60472.60472.78363.72381.09012.97132.97131.08901.0890
H62.32482.85132.85131.09013.72384.55461.78511.78513.96123.9612
H72.32482.85132.85133.72381.09014.55463.96123.96121.78511.7851
H82.37453.51922.81001.08902.97131.78513.96121.80073.28342.7456
H92.37452.81003.51921.08902.97131.78513.96121.80072.74563.2834
H102.37452.81003.51922.97131.08903.96121.78513.28342.74561.8007
H112.37453.51922.81002.97131.08903.96121.78512.74563.28341.8007

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 105.918 S1 C4 H8 109.608
S1 C4 H9 109.608 S1 C5 H7 105.918
S1 C5 H10 109.608 S1 C5 H11 109.608
O2 S1 O3 120.538 O2 S1 C4 107.942
O2 S1 C5 107.942 O3 S1 C4 107.942
O3 S1 C5 107.942 C4 S1 C5 103.195
H6 C4 H8 110.005 H6 C4 H9 110.005
H7 C5 H10 110.005 H7 C5 H11 110.005
H8 C4 H9 111.540 H10 C5 H11 111.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability