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

Compare vibrational frequencies in CCCBDB for SO2Cl2 (Sulfuryl chloride)

B3PW91/3-21G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 927 -278 A1 1205  
2 A1 425 -152 A1 577  
3 A1 264 -144 A1 408  
4 A1 116 -102 A1 218  
5 A2 157 -125 A2 282  
6 B1 403 -183 B1 586  
7 B1 234 -154 B1 388  
8 B2 1105 -329 B2 1434  
9 B2 214 -148 B2 362  
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.