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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 B1B95/6-31G*

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.347 0.917
Be2 Beryllium diatomic rBeBe 2.460 2.010 -0.450
C4H6O2 2,3-Butanedione rCH 1.114 1.539 0.425
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.524 0.411
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.521 0.408
Al2 Aluminum diatomic rAlAl 2.701 3.028 0.327
C4H8O2 1,3-Dioxane rCH 1.095 1.395 0.300
ONNO NO dimer rNN 2.236 1.953 -0.283
Al2 Aluminum diatomic rAlAl 2.701 2.479 -0.222
Mg2 Magnesium diatomic rMgMg 3.891 3.679 -0.212
Si2 Silicon diatomic rSiSi 2.246 2.049 -0.197
He2+ helium dimer cation rHeHe 1.081 1.219 0.138
B2 Boron diatomic rBB 1.590 1.467 -0.123
CaCl calcium monochloride rClCa 2.437 2.553 0.117
CaH Calcium monohydride rHCa 2.003 2.117 0.114
AlN Aluminum nitride rNAl 1.786 1.677 -0.109
ClF+ clorine monofluoride cation rFCl 1.448 1.556 0.108
Ne2 Neon dimer rNeNe 3.100 2.994 -0.106
FO2 Dioxygen monofluoride rFO 1.649 1.547 -0.102
CuO Copper Monoxide rCuO 1.724 1.632 -0.093
CuF Copper monofluoride rCuF 1.745 1.666 -0.079
Na2+ sodium dimer cation rNaNa 3.540 3.618 0.078
NaK Sodium Potassium rNaK 3.589 3.513 -0.076
PCl5 Phosphorus pentachloride rPCl 2.214 2.141 -0.073
CO Carbon monoxide rCO 1.206 1.134 -0.072
CO Carbon monoxide rCO 1.206 1.134 -0.072
Li2 Lithium diatomic rLiLi 2.673 2.741 0.068
B2 Boron diatomic rBB 1.590 1.522 -0.068
C2 Carbon diatomic rCC 1.243 1.310 0.067
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.516 -0.064
CaF Calcuium monofluoride rFCa 1.967 2.030 0.063
CH3CHNOH Acetaldoxime rCC 1.550 1.488 -0.062
N2O3 Dinitrogen trioxide rNN 1.864 1.805 -0.059
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.343 -0.057
C5H10 2-Pentene, (E)- rCC 1.576 1.520 -0.056
BHCl2 Borane, dichloro- rBH 1.130 1.185 0.055
BN boron nitride rBN 1.325 1.270 -0.055
B2 Boron diatomic rBB 1.590 1.643 0.053
FNO Nitrosyl fluoride rNF 1.512 1.459 -0.053
CuCl Copper monochloride rCuCl 2.051 1.999 -0.052
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.560 1.509 -0.051
KCl Potassium Chloride rKCl 2.667 2.717 0.051
42 molecules.