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Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

mPW1PW91/cc-pV(T+d)Z

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' 1965 1882   50 A'   1832  
2 A' 1794 1719   67 A'   1652  
3 A' 1424 1364   59 A'   1305  
4 A' 842 806   33 A'   773  
5 A' 707 677   50 A'   627  
6 A' 310 297   56 A'   241  
7 A' 238 228   23 A'   205  
8 A" 499 478   64 A"   414  
9 A" 144 138   75 A"   63  
The calculated vibrational frequencies were scaled by 0.9579

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.