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

Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

B1B95/6-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 1881 49 A' 1832  
2 A' 1746 94 A' 1652  
3 A' 1370 65 A' 1305  
4 A' 785 12 A' 773  
5 A' 665 38 A' 627  
6 A' 294 53 A' 241  
7 A' 220 15 A' 205  
8 A" 467 53 A" 414  
9 A" 145 82 A" 63  
The calculated vibrational frequencies were scaled by 0.9493

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.