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

Compare vibrational frequencies in CCCBDB for ONONO (Nitrosyl nitrite)

HF/CEP-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 1866 126 A1 1740  
2 A1 1121 147 A1 974  
3 A1 521 126 A1 395  
4 A1 293        
5 A2 219 9 A2 210  
6 B1 142 2 B1 140  
7 B2 1806 109 B2 1697  
8 B2 870 166 B2 705  
9 B2 714 334 B2 380  
The calculated vibrational frequencies were scaled by 0.898

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.