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

Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

CCD/cc-pVTZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 1774 -58 A' 1832  
2 A' 1735 83 A' 1652  
3 A' 1340 35 A' 1305  
4 A' 793 20 A' 773  
5 A' 709 82 A' 627  
6 A' 328 87 A' 241  
7 A' 265 60 A' 205  
8 A" 522 108 A" 414  
9 A" 130 67 A" 63  
The calculated vibrational frequencies were scaled by 0.9337

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.