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

Compare vibrational frequencies in CCCBDB for CH3SOCH3 (Dimethyl sulfoxide)

MP2/CEP-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3098 88 A' 3010  
2 A' 3088 78 A' 3010  
3 A' 2951 18 A' 2933  
4 A' 1433 14 A' 1419  
5 A' 1415 10 A' 1405  
6 A' 1357 53 A' 1304  
7 A' 1018 -84 A' 1102  
8 A' 990 -26 A' 1016  
9 A' 741 -265 A' 1006  
10 A' 593 -79 A' 672  
11 A' 286 -96 A' 382  
12 A' 234 -74 A' 308  
13 A' 173      
14 A" 3096 86 A" 3010  
15 A" 3087 77 A" 3010  
16 A" 2952 19 A" 2933  
17 A" 1421 -34 A" 1455  
18 A" 1404 -36 A" 1440  
19 A" 1331 12 A" 1319  
20 A" 951 -2 A" 953  
21 A" 908 -25 A" 933  
22 A" 637 -58 A" 695  
23 A" 250 -83 A" 333  
24 A" 104      
The calculated vibrational frequencies were scaled by 0.9663

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.