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IV.D.7. (XVIII.A.2.)

Bad Calculated Bond Lengths

List of molecules with calculated bond lengths that differ by more than 0.050 Å from experimental bond lengths.

Calculated at mPW1PW91/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.350 0.920
Be2 Beryllium diatomic rBeBe 2.460 2.012 -0.448
C4H6O2 2,3-Butanedione rCH 1.114 1.546 0.432
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.525 0.412
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.522 0.409
Al2 Aluminum diatomic rAlAl 2.701 3.051 0.350
Ne2 Neon dimer rNeNe 3.100 2.764 -0.336
C4H8O2 1,3-Dioxane rCH 1.095 1.397 0.302
Mg2 Magnesium diatomic rMgMg 3.891 3.599 -0.292
FO2 Dioxygen monofluoride rFO 1.649 1.864 0.215
Si2 Silicon diatomic rSiSi 2.246 2.049 -0.197
AlN Aluminum nitride rNAl 1.786 1.675 -0.112
ClF+ clorine monofluoride cation rFCl 1.448 1.559 0.111
Na2+ sodium dimer cation rNaNa 3.540 3.641 0.101
ZnS Zinc sulfide rSZn 2.046 2.145 0.098
Si2 Silicon diatomic rSiSi 2.246 2.153 -0.093
CO Carbon monoxide rCO 1.206 1.125 -0.081
CO Carbon monoxide rCO 1.206 1.125 -0.081
ClFO3 Perchloryl fluoride rFCl 1.598 1.679 0.081
B2 Boron diatomic rBB 1.590 1.518 -0.072
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.513 -0.067
Li2 Lithium diatomic rLiLi 2.673 2.737 0.064
BN boron nitride rBN 1.325 1.262 -0.063
CH3CHNOH Acetaldoxime rCC 1.550 1.488 -0.062
C2 Carbon diatomic rCC 1.243 1.304 0.062
BrF5 bromine pentafluoride rFBr 1.689 1.747 0.058
C5H10 2-Pentene, (E)- rCC 1.576 1.521 -0.055
He2+ helium dimer cation rHeHe 1.081 1.136 0.055
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.345 -0.055
ClNO2 Nitryl chloride rNCl 1.840 1.894 0.054
BHCl2 Borane, dichloro- rBH 1.130 1.183 0.053
ClS2 Sulfur chloride rSCl 2.071 2.123 0.052
B2 Boron diatomic rBB 1.590 1.642 0.052
PCl5 Phosphorus pentachloride rPCl 2.214 2.163 -0.051
C5H8O 2H-Pyran, 3,4-dihydro- rCO 1.405 1.355 -0.050
SOCl2 thionyl chloride rSCl 2.076 2.126 0.050
36 molecules.