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

Compare vibrational frequencies in CCCBDB for ClNO2 (Nitryl chloride)

MP2/SDD

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 1102 -166 A1 1267  
2 A1 675 -117 A1 793  
3 A1 291 -73 A1 364  
4 B1 531 -121 B1 652  
5 B2 1799 115 B2 1684  
6 B2 330 -79 B2 408  
The calculated vibrational frequencies were scaled by 0.9653

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.