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

Compare vibrational frequencies in CCCBDB for ZnCH2 (Zinc methylene)

HF/6-311G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2903 -56 A1 2959  
2 A1 1233 -109 A1 1342  
3 A1 395 -119 A1 514  
4 B1 545 20 B1 525  
5 B2 2990 -57 B2 3047  
6 B2 483 -61 B2 544  
The calculated vibrational frequencies were scaled by 0.9044

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.