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Compare vibrational frequencies in CCCBDB for FCN (Cyanogen fluoride)

MP2=FULL/3-21G*

17 05 22 16 49
Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 Σ 2038 -280 Σ 2317  
2 Σ 952 -108 Σ 1060  
3 Π 354 -97 Π 451  
The calculated vibrational frequencies were scaled by 0.948

See section Calculated; Vibrations; Scale Factors; Set scaling factors to change the scale factors used here.
See section Calculated; Vibrations; Scale Factors; Calculate a scale factor to determine the least squares best scaling factor.
See section Calculated; Vibrations; Scale Factors; Scale factor uncertainty for information on where the above scaling factor is from.