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

Compare vibrational frequencies in CCCBDB for N2H4 (Hydrazine)

B3LYP/CEP-121G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3512 114 A 3398  
2 A 3360 31 A 3329  
3 A 1683 41 A 1642  
4 A 1244 -31 A 1275  
5 A 1112 36 A 1076  
6 A 591 -189 A 780  
7 A 547 171 A 377  
8 B 3516 166 B 3350  
9 B 3363 49 B 3314  
10 B 1659 31 B 1628  
11 B 1232 -43 B 1275  
12 B 685 -281 B 966  
The calculated vibrational frequencies were scaled by 0.9745

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.