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

Compare vibrational frequencies in CCCBDB for CBr2F2 (Methane, dibromodifluoro-)

CCD/6-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3605 2515 A1 1090  
2 A1 531 -92 A1 623  
3 A' 2908 2768 A1 140  
4 A1 153 -15 A1 168  
5 A' 1637 1356 A2 281  
6 B1 1106 -47 B1 1153  
7 A' 1251 882 B1 369  
8 B2 752 -79 B2 831  
9 A' 548 313 B2 235  
10 A" 996        
11 A" 605        
12 A" 436        
The calculated vibrational frequencies were scaled by 0.9595

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.