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Species with point groups that differ from experiment at QCISD/6-311G*

  Point group
Species Name Experimental Calculated
HD Deuterium hydride C∞v D∞h
C2H4+ Ethylene cation D2h D2
MgOH magnesium hydroxide C∞v Cs
MgOH magnesium hydroxide C∞v Cs
CH3S thiomethoxy C3v C1
HCCO ketenyl radical C∞v Cs
HCNO fulminic acid Cs C∞v
C4H2 Diacetylene D∞h C2h
C4H2 Diacetylene C∞v C2h
HCONHCH3 N-methylformamide Cs C1
CH3COCH3 Acetone C2v C2
CF3+ Trifluoromethyl cation D3h C3v
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
C2H4N2O2 Oxalamide C2h C2
C2H5NO3 Nitric acid, ethyl ester C1 Cs
C8H14 Bicyclo[2.2.2]octane D3h D3
C6H12O2 Hexanoic acid Cs C1
C4F4 tetrafluorcyclobutadiene C2h D4h
CH3COC6H5 acetophenone C1 Cs