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

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

PBEPBE/aug-cc-pVDZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3606 2516 A1 1090  
2 A1 586 -37 A1 623  
3 A' 2847 2707 A1 140  
4 A1 156 -12 A1 168  
5 A' 1546 1265 A2 281  
6 B1 1065 -88 B1 1153  
7 A' 1225 856 B1 369  
8 B2 749 -82 B2 831  
9 A' 538 303 B2 235  
10 A" 979        
11 A" 631        
12 A" 267        
The calculated vibrational frequencies were scaled by 0.9939

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.