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

Compare vibrational frequencies in CCCBDB for H2POH (Phosphinous acid)

HF/6-311G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3775 131 A' 3644  
2 A' 2261 -44 A' 2305  
3 A' 1157 33 A' 1124  
4 A' 1107 33 A' 1075  
5 A' 907 -8 A' 915  
6 A' 804 7 A' 797  
7 A" 2245 -33 A" 2278  
8 A" 914 66 A" 848  
9 A" 425 50 A" 375  
The calculated vibrational frequencies were scaled by 0.9044

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.