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

Compare vibrational frequencies in CCCBDB for H2OH2O (water dimer)

CCSD(T)/6-31+G**

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3799 64 A' 3735  
2 A 3702 42 A' 3660  
3 A 3650 49 A' 3601  
4 A 1607 -9 A' 1616  
5 A 1584 -15 A' 1599  
6 A 359 48 A' 311  
7 A 190 47 A' 143  
8 A 161 58 A' 103  
9 A 3822 77 A" 3745  
10 A 637 114 A" 523  
11 A 159 51 A" 108  
12 A 135 47 A" 88  
The calculated vibrational frequencies were scaled by 0.9596

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.