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Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

LSDA/6-31G*

18 11 26 13 55
Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency Scaled
Frequency
Harm.
diff
Fund.
diff
Symmetry Harmonic
Frequency
Fundamental
Frequency
Comment
1 A' 1920 1884   52 A'   1832  
2 A' 1814 1780   128 A'   1652  
3 A' 1405 1378   73 A'   1305  
4 A' 801 786   13 A'   773  
5 A' 669 657   30 A'   627  
6 A' 314 308   67 A'   241  
7 A' 220 216   11 A'   205  
8 A" 452 443   29 A"   414  
9 A" 154 151   88 A"   63  
The calculated vibrational frequencies were scaled by 0.9813

See section Calculated; Vibrations; Scale Factors; Set scaling factors to change the scale factors used here.
See section Calculated; Vibrations; Scale Factors; Calculate a scale factor to determine the least squares best scaling factor.
See section Calculated; Vibrations; Scale Factors; Scale factor uncertainty for information on where the above scaling factor is from.