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

Compare vibrational frequencies in CCCBDB for C3H6O (Oxetane)

mPW1PW91/6-311G**

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2969 10 A1 2959  
2 A1 2915 -15 A1 2930  
3 A1 1485 12 A1 1473  
4 A1 1429 -32 A1 1461  
5 A1 1337 -5 A1 1342  
6 A1 1030 -104 A1 1134  
7 A1 918 -100 A1 1018  
8 A1 788 -120 A1 908  
9 A2 2951 -49 A2 3000  
10 A2 1191 -92 A2 1283  
11 A2 1125 -60 A2 1185  
12 A2 811 -175 A2 986  
13 B1 3024 17 B1 3007  
14 B1 2950 10 B1 2940  
15 B1 1155 -70 B1 1225  
16 B1 1111 -31 B1 1142  
17 B1 740 -96 B1 836  
18 B1 77 -12 B1 90  
19 B2 2905 -61 B2 2966  
20 B2 1456 -52 B2 1508  
21 B2 1271 -187 B2 1458  
22 B2 1220 -143 B2 1363  
23 B2 1029 -199 B2 1228  
24 B2 928 -8 B2 936  
The calculated vibrational frequencies were scaled by 0.9567

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.