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

Compare vibrational frequencies in CCCBDB for C6H8 (1,3,5-Hexatriene, (E)-)

MP2=FULL/6-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 Ag 3117 32 Ag 3085  
2 Ag 3029 -25 Ag 3054  
3 Ag 3016 -38 Ag 3054  
4 Ag 3003 14 Ag 2989  
5 Ag 1634 7 Ag 1627  
6 Ag 1563 -16 Ag 1579  
7 Ag 1388 -12 Ag 1400  
8 Ag 1285 -3 Ag 1288  
9 Ag 1266 46 Ag 1220  
10 Ag 1182 -10 Ag 1192  
11 Ag 913 -21 Ag 934  
12 Ag 425 -19 Ag 444  
13 Ag 333 -22 Ag 355  
14 Au 993 -20 Au 1013  
15 Au 914 -27 Au 941  
16 Au 858 -43 Au 901  
17 Au 666 -17 Au 683  
18 Au 235   Au    
19 Au 89 -1 Au 90  
20 Bg 966 -22 Bg 988  
21 Bg 858 -70 Bg 928  
22 Bg 815 -57 Bg 872  
23 Bg 578   Bg    
24 Bg 191 -26 Bg 217  
25 Bu 3117 18 Bu 3099  
26 Bu 3029 -16 Bu 3045  
27 Bu 3017 -2 Bu 3019  
28 Bu 3004 51 Bu 2953  
29 Bu 1617 -12 Bu 1629  
30 Bu 1422 -10 Bu 1432  
31 Bu 1277 -18 Bu 1295  
32 Bu 1239 -16 Bu 1255  
33 Bu 1121 -65 Bu 1186  
34 Bu 944 -19 Bu 963  
35 Bu 518 -72 Bu 590  
36 Bu 139 -31 Bu 170  
The calculated vibrational frequencies were scaled by 0.9422

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.