return to home page

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

Compare vibrational frequencies in CCCBDB for C3H3 (Propargyl radical)

PBEPBE/STO-3G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3287 -36 A1 3322  
2 A1 3028        
3 A1 1922        
4 A1 1398        
5 A1 1013        
6 B1 555 -132 B1 687  
7 B1 419 -71 B1 490  
8 B1 353        
9 B2 3165        
10 B2 974        
11 B2 600        
12 B2 315        
The calculated vibrational frequencies were scaled by 0.9136

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.