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

Compare vibrational frequencies in CCCBDB for N2H4 (Hydrazine)

B3LYP/CEP-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3549 151 A 3398  
2 A 3395 66 A 3329  
3 A 1648 6 A 1642  
4 A 1216 -59 A 1275  
5 A 1119 43 A 1076  
6 A 600 -180 A 780  
7 A 475 98 A 377  
8 B 3551 201 B 3350  
9 B 3402 88 B 3314  
10 B 1630 2 B 1628  
11 B 1205 -70 B 1275  
12 B 555 -411 B 966  
The calculated vibrational frequencies were scaled by 0.9684

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.