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

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

HF/6-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3600 2510 A1 1090  
2 A 3471 2848 A1 623  
3 A 2947 2807 A1 140  
4 A 1706 1538 A1 168  
5 A 1642 1361 A2 281  
6 A 1402 249 B1 1153  
7 A 1264 895 B1 369  
8 A 1066 235 B2 831  
9 A 1066 831 B2 235  
10 A 666        
11 A 560        
12 A 523        
The calculated vibrational frequencies were scaled by 0.9029

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.