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=FULL/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=FULL/6-31G**
 hartrees
Energy at 0K-627.230476
Energy at 298.15K 
HF Energy-626.399340
Nuclear repulsion energy272.848703
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=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3276 3061 0.19      
2 A1 3153 2947 1.00      
3 A1 1521 1421 2.53      
4 A1 1421 1328 15.93      
5 A1 1184 1106 164.33      
6 A1 1052 983 0.19      
7 A1 717 670 12.34      
8 A1 491 459 26.72      
9 A1 278 260 2.14      
10 A2 3278 3063 0.00      
11 A2 1505 1406 0.00      
12 A2 980 915 0.00      
13 A2 294 274 0.00      
14 A2 199 186 0.00      
15 B1 3281 3066 1.55      
16 B1 1523 1423 9.29      
17 B1 1382 1291 225.53      
18 B1 1039 971 0.98      
19 B1 369 345 1.38      
20 B1 233 218 0.44      
21 B2 3275 3060 0.74      
22 B2 3151 2945 0.33      
23 B2 1511 1412 6.53      
24 B2 1403 1311 16.82      
25 B2 991 926 66.83      
26 B2 788 736 49.14      
27 B2 457 427 38.47      

Unscaled Zero Point Vibrational Energy (zpe) 19375.3 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 18104.3 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=FULL/6-31G**
ABC
0.15012 0.13977 0.13822

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.190
O2 -1.278 0.000 0.911
O3 1.278 0.000 0.911
C4 0.000 1.399 -0.914
C5 0.000 -1.399 -0.914
H6 0.000 2.281 -0.281
H7 0.000 -2.281 -0.281
H8 0.897 1.381 -1.525
H9 -0.897 1.381 -1.525
H10 -0.897 -1.381 -1.525
H11 0.897 -1.381 -1.525

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.46731.46731.78171.78172.32962.32962.37762.37762.37762.3776
O21.46732.55562.63052.63052.87392.87393.54562.82632.82633.5456
O31.46732.55562.63052.63052.87392.87392.82633.54563.54562.8263
C41.78172.63052.63052.79751.08613.73421.08541.08542.98442.9844
C51.78172.63052.63052.79753.73421.08612.98442.98441.08541.0854
H62.32962.87392.87391.08613.73424.56301.77821.77823.97093.9709
H72.32962.87392.87393.73421.08614.56303.97093.97091.77821.7782
H82.37763.54562.82631.08542.98441.77823.97091.79353.29372.7626
H92.37762.82633.54561.08542.98441.77823.97091.79352.76263.2937
H102.37762.82633.54562.98441.08543.97091.77823.29372.76261.7935
H112.37763.54562.82632.98441.08543.97091.77822.76263.29371.7935

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 106.093 S1 C4 H8 109.648
S1 C4 H9 109.648 S1 C5 H7 106.093
S1 C5 H10 109.648 S1 C5 H11 109.648
O2 S1 O3 121.114 O2 S1 C4 107.727
O2 S1 C5 107.727 O3 S1 C4 107.727
O3 S1 C5 107.727 C4 S1 C5 103.452
H6 C4 H8 109.948 H6 C4 H9 109.948
H7 C5 H10 109.948 H7 C5 H11 109.948
H8 C4 H9 111.416 H10 C5 H11 111.416
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability