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)

MP2/CEP-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3073 114 A1 2959  
2 A1 2971 41 A1 2930  
3 A' 2989 1516 A1 1473  
4 A1 1471 10 A1 1461  
5 A' 1503 161 A1 1342  
6 A1 968 -166 A1 1134  
7 A' 1316 298 A1 1018  
8 A1 735 -173 A1 908  
9 A' 1050 -1950 A2 3000  
10 A2 1210 -73 A2 1283  
11 A' 797 -388 A2 1185  
12 A2 835 -151 A2 986  
13 A' 735 -2272 B1 3007  
14 B1 3043 103 B1 2940  
15 A" 3051 1826 B1 1225  
16 B1 1050 -92 B1 1142  
17 A" 1478 642 B1 836  
18 B1 39 -51 B1 90  
19 A" 1240 -1726 B2 2966  
20 B2 1478 -30 B2 1508  
21 A" 1064 -394 B2 1458  
22 B2 1240 -123 B2 1363  
23 A" 875 -353 B2 1228  
24 B2 875 -61 B2 936  
The calculated vibrational frequencies were scaled by 0.9663

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.