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Compare vibrational frequencies in CCCBDB for CHCl2 (dichloromethyl radical)

PBEPBE/6-31G

18 11 26 13 55
Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency Scaled
Frequency
Harm.
diff
Fund.
diff
Symmetry Harmonic
Frequency
Fundamental
Frequency
Comment
1 A1 3265 3220           
2 A1 682 672           
3 A1 288 284           
4 B1 372i 367i           
5 B2 1194 1177           
6 B2 840 828           
The calculated vibrational frequencies were scaled by 0.9862

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.