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

Compare vibrational frequencies in CCCBDB for ClFO3 (Perchloryl fluoride)

PM3

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1   -1061 A1 1061  
2   -715 A1 715  
3   -549 A1 549  
4   -1315 E 1315  
5   -589 E 589  
6   -405 E 405  
The calculated vibrational frequencies were scaled by 0.974

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.