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

Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

HF/CEP-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 1877 45 A' 1832  
2 A' 1740 88 A' 1652  
3 A' 1432 127 A' 1305  
4 A' 829 56 A' 773  
5 A' 762 135 A' 627  
6 A' 413 172 A' 241  
7 A' 326 121 A' 205  
8 A" 608 194 A" 414  
9 A" 96 33 A" 63  
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.