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

Compare vibrational frequencies in CCCBDB for C3H6O3 (1,3,5-Trioxane)

HF/CEP-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 3098 78 A1 3020  
2 A1 2911 56 A1 2855  
3 A1 1500 23 A1 1477  
4 A1 1188 20 A1 1168  
5 A1 913 -57 A1 970  
6 A1 710 -39 A1 749  
7 A1 367 -109 A1 476  
8 A2 1360   A2    
9 A2 1205 -50 A2 1255  
10 A2 1001   A2    
11 E 3092 72 E 3020  
12 E 2896 41 E 2855  
13 E 1485 8 E 1477  
14 E 1404 -8 E 1412  
15 E 1271 -38 E 1309  
16 E 1157 -11 E 1168  
17 E 1036 -32 E 1068  
18 E 886 -49 E 935  
19 E 485 -39 E 524  
20 E 231 -76 E 307  
The calculated vibrational frequencies were scaled by 0.9014

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.