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

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

QCISD/6-311G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3597 2507 A1 1090  
2 A 3473 2850 A1 623  
3 A 2862 2722 A1 140  
4 A 1764 1596 A1 168  
5 A 1619 1338 A2 281  
6 A 1381 228 B1 1153  
7 A 1243 874 B1 369  
8 A 1048 217 B2 831  
9 A 1004 769 B2 235  
10 A 606        
11 A 550        
12 A 341        
The calculated vibrational frequencies were scaled by 0.9574

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.