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: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-626.630145
Energy at 298.15K 
HF Energy-626.115632
Nuclear repulsion energy254.009784
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 MP2/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3244 3104 0.41      
2 A1 3109 2975 2.14      
3 A1 1518 1453 6.28      
4 A1 1424 1362 3.80      
5 A1 1095 1048 49.14      
6 A1 871 833 73.14      
7 A1 601 575 8.87      
8 A1 380 364 25.02      
9 A1 225 215 3.17      
10 A2 3242 3102 0.00      
11 A2 1519 1453 0.00      
12 A2 1002 958 0.00      
13 A2 220 211 0.00      
14 A2 160 153 0.00      
15 B1 3244 3104 0.03      
16 B1 1530 1463 30.24      
17 B1 1116 1068 93.28      
18 B1 974 932 41.28      
19 B1 287 275 2.01      
20 B1 181 174 0.64      
21 B2 3243 3103 2.13      
22 B2 3108 2973 0.03      
23 B2 1510 1444 12.86      
24 B2 1400 1339 1.06      
25 B2 1010 966 18.51      
26 B2 693 663 41.81      
27 B2 333 319 46.31      

Unscaled Zero Point Vibrational Energy (zpe) 18618.5 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 17814.1 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 MP2/6-31G
ABC
0.12779 0.12301 0.11981

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.177
O2 -1.419 0.000 0.983
O3 1.419 0.000 0.983
C4 0.000 1.490 -0.970
C5 0.000 -1.490 -0.970
H6 0.000 2.362 -0.312
H7 0.000 -2.362 -0.312
H8 0.911 1.444 -1.571
H9 -0.911 1.444 -1.571
H10 -0.911 -1.444 -1.571
H11 0.911 -1.444 -1.571

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.63201.63201.88021.88022.41242.41242.44372.44372.44372.4437
O21.63202.83862.83672.83673.04493.04493.74682.97752.97753.7468
O31.63202.83862.83672.83673.04493.04492.97753.74683.74682.9775
C41.88022.83672.83672.97951.09273.90781.09261.09263.13023.1302
C51.88022.83672.83672.97953.90781.09273.13023.13021.09261.0926
H62.41243.04493.04491.09273.90784.72451.80511.80514.11124.1112
H72.41243.04493.04493.90781.09274.72454.11124.11121.80511.8051
H82.44373.74682.97751.09263.13021.80514.11121.82243.41482.8879
H92.44372.97753.74681.09263.13021.80514.11121.82242.88793.4148
H102.44372.97753.74683.13021.09264.11121.80513.41482.88791.8224
H112.44373.74682.97753.13021.09264.11121.80512.88793.41481.8224

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 105.390 S1 C4 H8 107.606
S1 C4 H9 107.606 S1 C5 H7 105.390
S1 C5 H10 107.606 S1 C5 H11 107.606
O2 S1 O3 120.841 O2 S1 C4 107.528
O2 S1 C5 107.528 O3 S1 C4 107.528
O3 S1 C5 107.528 C4 S1 C5 104.805
H6 C4 H8 111.388 H6 C4 H9 111.388
H7 C5 H10 111.388 H7 C5 H11 111.388
H8 C4 H9 113.021 H10 C5 H11 113.021
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability