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

Compare vibrational frequencies in CCCBDB for C2F6 (hexafluoroethane)

MP2/SDD

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1g 1264 -156 A1g 1420  
2 A1g 676 -133 A1g 809  
3 A1g 311 -38 A1g 349  
4 A1u 58 -10 A1u 68  
5 A2u 966 -151 A2u 1117  
6 A2u 591 -123 A2u 714  
7 Eg 1048 -189 Eg 1237  
8 Eg 530 -90 Eg 620  
9 Eg 322 -58 Eg 380  
10 Eu 1067 -183 Eu 1251  
11 Eu 434 -88 Eu 523  
12 Eu 194 -22 Eu 216  
The calculated vibrational frequencies were scaled by 0.9653

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.