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

Compare vibrational frequencies in CCCBDB for ZnCH3 (Zinc monomethyl)

B3PW91/6-31G(2df,p)

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2918        
2 A1 1121 57 A1 1064  
3 A1 531 86 A1 445  
4 E 3012        
5 E 1377        
6 E 574 259 E 315 Tentative
The calculated vibrational frequencies were scaled by 0.9614

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.