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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
H2ONH3 Water Ammonia Dimer rNH 2.983 1.957 -1.026
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.349 0.919
Be2 Beryllium diatomic rBeBe 2.460 2.011 -0.449
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 1.520 0.407
Al2 Aluminum diatomic rAlAl 2.701 3.028 0.327
C4H8O2 1,3-Dioxane rCH 1.095 1.396 0.301
ONNO NO dimer rNN 2.236 1.953 -0.283
Mg2 Magnesium diatomic rMgMg 3.891 3.667 -0.224
Al2 Aluminum diatomic rAlAl 2.701 2.480 -0.221
Si2 Silicon diatomic rSiSi 2.246 2.049 -0.197
B2 Boron diatomic rBB 1.590 1.469 -0.121
CaCl calcium monochloride rClCa 2.437 2.553 0.117
CaH Calcium monohydride rHCa 2.003 2.115 0.113
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 1.554 -0.095
CuO Copper Monoxide rCuO 1.724 1.629 -0.095
CuF Copper monofluoride rCuF 1.745 1.665 -0.080
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 2.143 -0.071
CO Carbon monoxide rCO 1.206 1.135 -0.070
CO Carbon monoxide rCO 1.206 1.135 -0.070
Li2 Lithium diatomic rLiLi 2.673 2.742 0.069
B2 Boron diatomic rBB 1.590 1.522 -0.068
C2 Carbon diatomic rCC 1.243 1.310 0.067
He2+ helium dimer cation rHeHe 1.081 1.146 0.065
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.515 -0.065
CaF Calcuium monofluoride rFCa 1.967 2.030 0.063
CH3CHNOH Acetaldoxime rCC 1.550 1.488 -0.062
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.343 -0.057
ClFO3 Perchloryl fluoride rFCl 1.598 1.654 0.056
C5H10 2-Pentene, (E)- rCC 1.576 1.520 -0.056
BN boron nitride rBN 1.325 1.270 -0.055
BHCl2 Borane, dichloro- rBH 1.130 1.184 0.054
B2 Boron diatomic rBB 1.590 1.643 0.053
CuCl Copper monochloride rCuCl 2.051 1.998 -0.053
40 molecules.