National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 17bSeptember 2015
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

NIST policy on privacy, security, and accessibility.

Please rate our products
© 2013 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

The National Institute of Standards and Technology (NIST) is an agency of the U.S. Department of Commerce.

Please send questions, comments, corrections, additions and suggestions to cccbdb@nist.gov.

return to home page

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

Compare vibrational frequencies in CCCBDB for C3H6O (Oxetane)

B3LYP/3-21G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2999 40 A1 2959  
2 A1 2964 34 A1 2930  
3 A1 1541 68 A1 1473  
4 A1 1482 21 A1 1461  
5 A1 1318 -24 A1 1342  
6 A1 967 -167 A1 1134  
7 A1 829 -189 A1 1018  
8 A1 777 -131 A1 908  
9 A2 3004 4 A2 3000  
10 A2 1228 -55 A2 1283  
11 A2 1091 -94 A2 1185  
12 A2 848 -138 A2 986  
13 B1 3054 47 B1 3007  
14 B1 3003 63 B1 2940  
15 B1 1170 -55 B1 1225  
16 B1 1056 -86 B1 1142  
17 B1 741 -95 B1 836  
18 B1 99 9 B1 90  
19 B2 2954 -12 B2 2966  
20 B2 1512 4 B2 1508  
21 B2 1264 -194 B2 1458  
22 B2 1235 -128 B2 1363  
23 B2 937 -291 B2 1228  
24 B2 883 -53 B2 936  
The calculated vibrational frequencies were scaled by 0.9649

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.