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 CH2CHCHCH2 (1,3-Butadiene)

MP2/STO-3G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3151 64 Ag 3087  
2 Ag 3056 53 Ag 3003  
3 A 3017 25 Ag 2992  
4 Ag 1594 -36 Ag 1630  
5 A 1407 -31 Ag 1438  
6 Ag 1240 -40 Ag 1280  
7 A 988 -208 Ag 1196  
8 Ag 827 -67 Ag 894  
9 A 858 346 Ag 512  
10 Au 1007 -6 Au 1013  
11 A 702 -206 Au 908  
12 Au 484 -38 Au 522  
13 A 63 -99 Au 162  
14 Bg 972 -4 Bg 976  
15 B 3058 2146 Bg 912  
16 Bg 713 -57 Bg 770  
17 B 1572 -1529 Bu 3101  
18 Bu 3059 4 Bu 3055  
19 B 1232 -1752 Bu 2984  
20 Bu 1535 -61 Bu 1596  
21 B 989 -392 Bu 1381  
22 Bu 1235 -59 Bu 1294  
23 B 516 -474 Bu 990  
24 Bu 263 -38 Bu 301  
The calculated vibrational frequencies were scaled by 0.8719

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.