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

Compare vibrational frequencies in CCCBDB for CH2Cl2 (Methylene chloride)

QCISD/3-21G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3066 67 A1 2999  
2 A1 1445 -22 A1 1467  
3 A1 591 -126 A1 717  
4 A1 242 -40 A1 282  
5 A2 1115 -38 A2 1153  
6 B1 3161 121 B1 3040  
7 B1 835 -63 B1 898  
8 B2 1236 -32 B2 1268  
9 B2 640 -118 B2 758  
The calculated vibrational frequencies were scaled by 0.9692

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.