National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 17bSeptember 2015
NIST Standard Reference Database 101
IIExperimental data
IIICalculated data
IVData comparisons
VCost comparisons
VIInput and output files
VIITutorials and Units
VIIILinks to other sites
XOlder CCCBDB versions
XIII Vibrations
XIVReaction data
XVEntropy data
XVIBibliographic data
XVIIIon data
XVIIIBad calculations
XIXIndex of properties
XXH-bond dimers

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

Compare vibrational frequencies in CCCBDB for NH2CN (cyanamide)


Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A' 3428 8 A' 3420 NH2 s-str
2 A' 2346 76 A' 2270 C#N str
3 A' 1596 1 A' 1595 NH2 scissors
4 A' 1043 -12 A' 1055 C-N str
5 A' 625 217 A' 408 NH2 wag 0- 49, 1+ 413.6, 1- 714.1
6 A' 488 1 A' 487 NCN bend
7 A" 3523 43 A" 3480 NH2 a-str
8 A" 1189   A"   NH2 rock
9 A" 421 -14 A" 435 NCN bend
The calculated vibrational frequencies were scaled by 0.9106

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.