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

Compare vibrational frequencies in CCCBDB for H2OH2O (water dimer)

B3LYP/STO-3G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3364 -371 A' 3735  
2 A' 3265 -395 A' 3660  
3 A' 3129 -472 A' 3601  
4 A' 1838 222 A' 1616  
5 A' 1767 168 A' 1599  
6 A' 564 253 A' 311  
7 A' 356 213 A' 143  
8 A' 301 198 A' 103  
9 A" 3463 -282 A" 3745  
10 A" 841 318 A" 523  
11 A" 341 233 A" 108  
12 A" 103 15 A" 88  
The calculated vibrational frequencies were scaled by 0.8924

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.