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

Compare vibrational frequencies in CCCBDB for N2H4 (Hydrazine)

HF/LANL2DZ

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3538 140 A 3398  
2 A 3406 77 A 3329  
3 A 1675 33 A 1642  
4 A 1244 -31 A 1275  
5 A 1117 41 A 1076  
6 A 606 -174 A 780  
7 A 546 170 A 377  
8 B 3540 190 B 3350  
9 B 3403 89 B 3314  
10 B 1660 32 B 1628  
11 B 1234 -41 B 1275  
12 B 662 -304 B 966  
The calculated vibrational frequencies were scaled by 0.8999

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.