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Compare vibrational frequencies in CCCBDB for CH3 (Methyl radical)

M06-2X/6-311+G(3df,2p)

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' 3142 3142   138 A1'   3004  
2 A2" 449 449   -157 A2"   606  
3 E' 3319 3319   159 E'   3161  
4 E' 1415 1415   19 E'   1396  
The calculated vibrational frequencies were scaled by 1

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.