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

Compare vibrational frequencies in CCCBDB for ONONO (Nitrosyl nitrite)

HF/6-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 1883 143 A1 1740  
2 A1 1112 138 A1 974  
3 A1 521 126 A1 395  
4 A1 292        
5 A2 224 14 A2 210  
6 B1 144 4 B1 140  
7 B2 1822 125 B2 1697  
8 B2 854 149 B2 705  
9 B2 710 330 B2 380  
The calculated vibrational frequencies were scaled by 0.8985

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.