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

Compare vibrational frequencies in CCCBDB for CH2ClCHClCH3 (Propane, 1,2-dichloro-)

B3PW91/STO-3G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3119 97 A 3022  
2 A 3107 103 A 3004  
3 A 3094 103 A 2991  
4 A 3015 45 A 2970  
5 A 2984 35 A 2949  
6 A 2958 50 A 2908  
7 A 1475 13 A 1462  
8 A 1469 10 A 1459  
9 A 1428 -18 A 1446  
10 A 1378 -13 A 1391  
11 A 1305 -42 A 1347  
12 A 1238 -48 A 1286  
13 A 1181 -57 A 1238  
14 A 1145 -36 A 1181  
15 A 1080 -40 A 1120  
16 A 1021 -55 A 1076  
17 A 985 -38 A 1023  
18 A 873 -17 A 890  
19 A 820 -30 A 850  
20 A 755 5 A 750  
21 A 690 5 A 685  
22 A 368 -49 A 417  
23 A 313 -45 A 358  
24 A 243 -42 A 285  
25 A 204 -46 A 250  
26 A 169 -34 A 203  
27 A 89 -19 A 108  
The calculated vibrational frequencies were scaled by 0.885

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.