National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 18October 2016
NIST Standard Reference Database 101
IIntroduction
IIExperimental data
IIICalculated data
IVData comparisons
VCost comparisons
VIInput and output files
VIITutorials and Units
VIIILinks to other sites
IXFeedback
XOlder CCCBDB versions
XIIGeometries
XIII Vibrations
XIVReaction data
XVEntropy data
XVIBibliographic data
XVIIIon data
XVIIIBad calculations
XIXIndex of properties
XXH-bond dimers
XXIOddities

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

Compare vibrational frequencies in CCCBDB for C3H6O (Oxetane)

PBEPBE/6-31G(2df,p)

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3051 92 A1 2959  
2 A1 2912 -18 A1 2930  
3 A' 2943 1470 A1 1473  
4 A1 1424 -37 A1 1461  
5 A' 1478 136 A1 1342  
6 A1 1025 -109 A1 1134  
7 A' 1322 304 A1 1018  
8 A1 778 -130 A1 908  
9 A' 1094 -1906 A2 3000  
10 A2 1182 -101 A2 1283  
11 A' 904 -281 A2 1185  
12 A2 801 -185 A2 986  
13 A' 732 -2275 B1 3007  
14 B1 2942 2 B1 2940  
15 A" 2944 1719 B1 1225  
16 B1 1094 -48 B1 1142  
17 A" 1447 611 B1 836  
18 B1 33 -56 B1 90  
19 A" 1200 -1766 B2 2966  
20 B2 1447 -61 B2 1508  
21 A" 1117 -341 B2 1458  
22 B2 1200 -163 B2 1363  
23 A" 926 -302 B2 1228  
24 B2 925 -11 B2 936  
The calculated vibrational frequencies were scaled by 0.9897

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.