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

Compare vibrational frequencies in CCCBDB for NNS (Nitrogen sulfide)

HF/6-311G**

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 Σ 2349 302 Σ 2048  
2 Σ 519 -233 Σ 752 mode renumbered from 3
3 Π 407        
The calculated vibrational frequencies were scaled by 0.9085

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.