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

Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

B1B95/aug-cc-pVDZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 1892 60 A' 1832  
2 A' 1724 72 A' 1652  
3 A' 1371 66 A' 1305  
4 A' 792 19 A' 773  
5 A' 665 38 A' 627  
6 A' 288 47 A' 241  
7 A' 214 9 A' 205  
8 A" 472 58 A" 414  
9 A" 140 77 A" 63  
The calculated vibrational frequencies were scaled by 0.9579

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.