return to home page

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

Compare vibrational frequencies in CCCBDB for C2H6O2S (Dimethyl sulfone)

mPW1PW91/cc-pVTZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3055 37 A1 3018 B1 & B2 reversed
2 A1 2956 20 A1 2936  
3 A1 1398 -53 A1 1451  
4 A1 1291 -46 A1 1337  
5 A1 1128 7 A1 1121  
6 A1 968 -45 A1 1013  
7 A1 658 -45 A1 703  
8 A1 467 -29 A1 496  
9 A1 256 -38 A1 294  
10 A2 3060 36 A2 3024  
11 A2 1388 -17 A2 1405  
12 A2 892 -45 A2 937  
13 A2 280 -46 A2 326  
14 A2 171   A2   CH3 torsion
15 B1 3064 39 B1 3025 B1 & B2 reversed
16 B1 1405 -23 B1 1428 B1 & B2 reversed
17 B1 1311 42 B1 1269 B1 & B2 reversed
18 B1 949 -37 B1 986 B1 & B2 reversed
19 B1 339 -57 B1 396 B1 & B2 reversed
20 B1 202 -60 B1 262 B1 & B2 reversed
21 B2 3054 37 B2 3017 B1 & B2 reversed
22 B2 2953 17 B2 2936 B1 & B2 reversed
23 B2 1388 -50 B2 1438 B1 & B2 reversed
24 B2 1275 -47 B2 1322 B1 & B2 reversed
25 B2 905 -53 B2 958 B1 & B2 reversed
26 B2 716 -55 B2 771 B1 & B2 reversed
27 B2 434 -31 B2 465 B1 & B2 reversed
The calculated vibrational frequencies were scaled by 0.9592

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.