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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 1891 151 A1 1740  
2 A1 1117 143 A1 974  
3 A1 523 128 A1 395  
4 A1 294        
5 A2 225 15 A2 210  
6 B1 145 5 B1 140  
7 B2 1830 133 B2 1697  
8 B2 857 153 B2 705  
9 B2 713 333 B2 380  
The calculated vibrational frequencies were scaled by 0.9026

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.