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Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

B3LYP/cc-pVTZ

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' 1932 1867   35 A'   1832  
2 A' 1717 1660   8 A'   1652  
3 A' 1376 1330   25 A'   1305  
4 A' 823 795   22 A'   773  
5 A' 667 645   18 A'   627  
6 A' 293 283   42 A'   241  
7 A' 216 209   4 A'   205  
8 A" 465 449   35 A"   414  
9 A" 142 137   74 A"   63  
The calculated vibrational frequencies were scaled by 0.9666

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.