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

Compare vibrational frequencies in CCCBDB for C3H3 (Propargyl radical)

PBEPBE/6-31G(2df,p)

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3395 73 A1 3322  
2 A1 3057        
3 A1 1970        
4 A1 1395        
5 A1 1079        
6 B1 648 -39 B1 687  
7 B1 408 -82 B1 490  
8 B1 288        
9 B2 3145        
10 B2 983        
11 B2 537        
12 B2 332        
The calculated vibrational frequencies were scaled by 0.9897

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.