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

Compare vibrational frequencies in CCCBDB for CBr2F2 (Methane, dibromodifluoro-)

HF/aug-cc-pVTZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3602 2512 A1 1090  
2 A 3474 2851 A1 623  
3 A 2867 2727 A1 140  
4 A 1774 1606 A1 168  
5 A 1608 1327 A2 281  
6 A 1405 252 B1 1153  
7 A 1237 868 B1 369  
8 A 1072 241 B2 831  
9 A 1045 810 B2 235  
10 A 604        
11 A 564        
12 A 186        
The calculated vibrational frequencies were scaled by 0.9104

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.