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

Compare vibrational frequencies in CCCBDB for C3H6O (Oxetane)

HF/3-21G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2962 3 A1 2959  
2 A1 2949 19 A1 2930  
3 A1 1546 73 A1 1473  
4 A1 1483 22 A1 1461  
5 A1 1348 6 A1 1342  
6 A1 967 -167 A1 1134  
7 A1 847 -171 A1 1018  
8 A1 805 -103 A1 908  
9 A2 2995 -5 A2 3000  
10 A2 1236 -47 A2 1283  
11 A2 1116 -69 A2 1185  
12 A2 840 -146 A2 986  
13 B1 3015 8 B1 3007  
14 B1 2988 48 B1 2940  
15 B1 1193 -32 B1 1225  
16 B1 1096 -46 B1 1142  
17 B1 737 -99 B1 836  
18 B1 115 25 B1 90  
19 B2 2945 -21 B2 2966  
20 B2 1520 12 B2 1508  
21 B2 1294 -164 B2 1458  
22 B2 1259 -104 B2 1363  
23 B2 977 -251 B2 1228  
24 B2 865 -71 B2 936  
The calculated vibrational frequencies were scaled by 0.9056

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.