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

Compare vibrational frequencies in CCCBDB for CH3COCH3 (Acetone)

mPW1PW91/6-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3038 19 A1 3019  
2 A1 2921 -16 A1 2937  
3 A1 1764 33 A1 1731  
4 A1 1423 -12 A1 1435  
5 A1 1340 -24 A1 1364  
6 A1 1041 -25 A1 1066  
7 A1 764 -13 A1 777  
8 A1 357 -28 A1 385  
9 A2 2980 17 A2 2963  
10 A2 1418 -8 A2 1426  
11 A2 849 -28 A2 877  
12 A2 21 -56 A2 77  
13 B1 2986 14 B1 2972  
14 B1 1440 -14 B1 1454  
15 B1 1076 -15 B1 1091  
16 B1 465 -19 B1 484  
17 B1 128 3 B1 125  
18 B2 3037 18 B2 3019  
19 B2 2916 -21 B2 2937  
20 B2 1414 4 B2 1410  
21 B2 1346 -18 B2 1364  
22 B2 1195 -21 B2 1216  
23 B2 855 -36 B2 891  
24 B2 507 -23 B2 530  
The calculated vibrational frequencies were scaled by 0.9483

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.