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IV.C.1. (XIII.D.1.)

Compare vibrational frequencies in CCCBDB for C2H6O2S (Dimethyl sulfone)

HF/6-31G(2df,p)

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2991 -27 A1 3018 B1 & B2 reversed
2 A1 2901 -35 A1 2936  
3 A1 1428 -23 A1 1451  
4 A1 1355 18 A1 1337  
5 A1 1164 43 A1 1121  
6 A1 997 -16 A1 1013  
7 A1 689 -14 A1 703  
8 A1 496 0 A1 496  
9 A1 265 -29 A1 294  
10 A2 2993 -31 A2 3024  
11 A2 1416 11 A2 1405  
12 A2 926 -11 A2 937  
13 A2 293 -33 A2 326  
14 A2 177   A2   CH3 torsion
15 B1 2998 -27 B1 3025 B1 & B2 reversed
16 B1 1433 5 B1 1428 B1 & B2 reversed
17 B1 1350 81 B1 1269 B1 & B2 reversed
18 B1 984 -2 B1 986 B1 & B2 reversed
19 B1 351 -45 B1 396 B1 & B2 reversed
20 B1 207 -55 B1 262 B1 & B2 reversed
21 B2 2990 -27 B2 3017 B1 & B2 reversed
22 B2 2898 -38 B2 2936 B1 & B2 reversed
23 B2 1420 -18 B2 1438 B1 & B2 reversed
24 B2 1339 17 B2 1322 B1 & B2 reversed
25 B2 937 -21 B2 958 B1 & B2 reversed
26 B2 745 -26 B2 771 B1 & B2 reversed
27 B2 457 -8 B2 465 B1 & B2 reversed
The calculated vibrational frequencies were scaled by 0.9055

See section XIII.C.3 List or set vibrational scaling factors to change the scale factors used here.
See section III.B.3.c Calculate a vibrational scaling factor for a set of molecules to determine the least squares best scaling factor.
See section III.B.3.b List of vibrational scaling factors and their uncertainties for information on where the above scaling factor is from.