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

Compare vibrational frequencies in CCCBDB for CH3SCH3 (Dimethyl sulfide)

B3PW91/3-21G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3064 66 A1 2998  
2 A1 2959 29 A1 2930  
3 A1 1481 37 A1 1444  
4 A1 1349 18 A1 1331  
5 A1 1031 58 A1 973  
6 A1 617 -78 A1 695  
7 A1 232 -50 A1 282  
8 A2 3055 103 A2 2952  
9 A2 1466 46 A2 1420  
10 A2 931 12 A2 919  
11 A2 164        
12 B1 3051 81 B1 2970  
13 B1 1476 37 B1 1439  
14 B1 964 -9 B1 973  
15 B1 164 -18 B1 182  
16 B2 3064 66 B2 2998  
17 B2 2961 31 B2 2930  
18 B2 1471 27 B2 1444  
19 B2 1324 9 B2 1315  
20 B2 910 7 B2 903  
21 B2 659 -84 B2 743  
The calculated vibrational frequencies were scaled by 0.9612

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.