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

Compare vibrational frequencies in CCCBDB for SF6 (Sulfur Hexafluoride)

CID/6-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1g 634 -139 A1g 774  
2 Eg 607 -34 Eg 642  
3 T1u 906 -41 T1u 948  
4 T1u 420 -195 T1u 616  
5 T2g 352 -173 T2g 525  
6 T2u 235 -112 T2u 347  
The calculated vibrational frequencies were scaled by 0.9352

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.