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

Compare vibrational frequencies in CCCBDB for N2O3 (Dinitrogen trioxide)

HF/aug-cc-pVDZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 1900 68 A' 1832  
2 A' 1755 103 A' 1652  
3 A' 1459 154 A' 1305  
4 A' 841 68 A' 773  
5 A' 781 154 A' 627  
6 A' 388 147 A' 241  
7 A' 323 118 A' 205  
8 A" 629 215 A" 414  
9 A" 107 44 A" 63  
The calculated vibrational frequencies were scaled by 0.9106

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.