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

using model chemistry: CCSD/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 CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-627.444384
Energy at 298.15K 
HF Energy-626.454900
Nuclear repulsion energy275.529420
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 CCSD/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 3217 3041 0.32      
2 A1 3111 2941 0.72      
3 A1 1487 1406 1.52      
4 A1 1391 1315 23.18      
5 A1 1206 1140 147.66      
6 A1 1029 973 2.19      
7 A1 719 680 8.88      
8 A1 504 476 26.10      
9 A1 276 261 2.38      
10 A2 3221 3045 0.00      
11 A2 1475 1395 0.00      
12 A2 952 900 0.00      
13 A2 296 280 0.00      
14 A2 182 172 0.00      
15 B1 3225 3049 1.56      
16 B1 1494 1413 2.05      
17 B1 1411 1334 222.01      
18 B1 1013 957 1.78      
19 B1 360 341 0.39      
20 B1 216 205 0.41      
21 B2 3215 3040 0.58      
22 B2 3109 2939 0.21      
23 B2 1478 1397 5.10      
24 B2 1375 1300 14.36      
25 B2 966 914 76.51      
26 B2 776 734 31.48      
27 B2 464 439 36.81      

Unscaled Zero Point Vibrational Energy (zpe) 19082.9 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 18042.8 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 CCSD/6-31G(2df,p)
ABC
0.15368 0.14306 0.13923

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/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 -1.250 0.000 0.906
O3 1.250 0.000 0.906
C4 0.000 1.393 -0.912
C5 0.000 -1.393 -0.912
H6 0.000 2.279 -0.276
H7 0.000 -2.279 -0.276
H8 0.901 1.373 -1.524
H9 -0.901 1.373 -1.524
H10 -0.901 -1.373 -1.524
H11 0.901 -1.373 -1.524

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.43881.43881.77751.77752.32682.32682.37572.37572.37572.3757
O21.43882.49932.60872.60872.85552.85553.52352.81302.81303.5235
O31.43882.49932.60872.60872.85552.85552.81303.52353.52352.8130
C41.77752.60872.60872.78521.09043.72611.08941.08942.97222.9722
C51.77752.60872.60872.78523.72611.09042.97222.97221.08941.0894
H62.32682.85552.85551.09043.72614.55791.78571.78573.96273.9627
H72.32682.85552.85553.72611.09044.55793.96273.96271.78571.7857
H82.37573.52352.81301.08942.97221.78573.96271.80143.28382.7456
H92.37572.81303.52351.08942.97221.78573.96271.80142.74563.2838
H102.37572.81303.52352.97221.08943.96271.78573.28382.74561.8014
H112.37573.52352.81302.97221.08943.96271.78572.74563.28381.8014

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 105.956 S1 C4 H8 109.583
S1 C4 H9 109.583 S1 C5 H7 105.956
S1 C5 H10 109.583 S1 C5 H11 109.583
O2 S1 O3 120.569 O2 S1 C4 107.942
O2 S1 C5 107.942 O3 S1 C4 107.942
O3 S1 C5 107.942 C4 S1 C5 103.156
H6 C4 H8 110.011 H6 C4 H9 110.011
H7 C5 H10 110.011 H7 C5 H11 110.011
H8 C4 H9 111.541 H10 C5 H11 111.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability