National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 19April 2018
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.D.3.a. (XVIII.A.3.)

Species with point groups that differ from experiment at MP2=FULL/6-31G

  Point group
Species Name Experimental Calculated
C2H4+ Ethylene cation D2h D2
HCN+ hydrogen cyanide cation C∞v Cs
H2O2 Hydrogen peroxide C2 C2h
C3 carbon trimer D∞h C2v
NH2CN cyanamide Cs C2v
NHCHNH2 aminomethanimine C1 Cs
HCCO ketenyl radical C∞v Cs
HCNO fulminic acid C∞v Cs
CaF2 Calcium difluoride C2v D∞h
C4 Carbon tetramer D∞h C2h
C4 Carbon tetramer D∞h C2h
C4H2 Diacetylene D∞h C2h
C4H2 Diacetylene C∞v C2h
H2CCCCH2 Butatriene D2h C2h
HCCCN Cyanoacetylene C∞v Cs
CH3COO- acetate anion Cs C1
HCONHCH3 N-methylformamide Cs C1
C2F2 difluoroacetylene D∞h C2h
SO3- Sulfur trioxide anion D3h C3v
CH2ClCHO chloroacetaldehyde Cs C1
CH2ClCHO chloroacetaldehyde C1 Cs
C3H5Cl 1-Propene, 3-chloro- Cs C1
CH2ClCH2OH2+ 2-chloroethanol, protonated C1 Cs
C(NH2)H2CH2CH2CH3 1-Butanamine C1 Cs
CHCl2CHO dichloroacetaldehyde C1 Cs
C2H4N4 1H-Tetrazole, 1-methyl- Cs C1
C2H5NO3 Nitric acid, ethyl ester C1 Cs
C6H5CHCH2 Styrene Cs C1
C8H14 Bicyclo[2.2.2]octane D3h D3
C6H12O2 Hexanoic acid Cs C1
C4F4 tetrafluorcyclobutadiene C2h D4h
CH3COC6H5 acetophenone C1 Cs