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

Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

CCSD(T)/cc-pVTZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 1792 -40 A' 1832  
2 A' 1679 27 A' 1652  
3 A' 1305 -0 A' 1305  
4 A' 775 2 A' 773  
5 A' 643 16 A' 627  
6 A' 272 31 A' 241  
7 A' 215 10 A' 205  
8 A" 457 43 A" 414  
9 A" 143 80 A" 63  
The calculated vibrational frequencies were scaled by 0.9748

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.