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

Compare vibrational frequencies in CCCBDB for CH3SCH3 (Dimethyl sulfide)

mPW1PW91/6-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3048 50 A1 2998  
2 A1 2931 1 A1 2930  
3 A1 1453 9 A1 1444  
4 A1 1343 12 A1 1331  
5 A1 1029 56 A1 973  
6 A1 632 -63 A1 695  
7 A1 234 -48 A1 282  
8 A2 3034 82 A2 2952  
9 A2 1436 16 A2 1420  
10 A2 935 16 A2 919  
11 A2 153        
12 B1 3029 59 B1 2970  
13 B1 1444 5 B1 1439  
14 B1 967 -6 B1 973  
15 B1 154 -28 B1 182  
16 B2 3049 51 B2 2998  
17 B2 2933 3 B2 2930  
18 B2 1444 -0 B2 1444  
19 B2 1320 5 B2 1315  
20 B2 904 1 B2 903  
21 B2 681 -62 B2 743  
The calculated vibrational frequencies were scaled by 0.9466

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.