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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 CCD/6-31G(2df,p)

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
Ne2 Neon dimer rNeNe 3.100 2.542 -0.558
Al2 Aluminum diatomic rAlAl 2.701 2.971 0.270
B2 Boron diatomic rBB 1.590 1.396 -0.194
Cu2 Copper dimer rCuCu 2.220 2.049 -0.170
Si2 Silicon diatomic rSiSi 2.246 2.079 -0.167
Na2+ sodium dimer cation rNaNa 3.540 3.700 0.160
N2O3 Dinitrogen trioxide rNN 1.864 1.711 -0.153
NaK Sodium Potassium rNaK 3.589 3.459 -0.130
CuO Copper Monoxide rCuO 1.724 1.613 -0.111
AlN Aluminum nitride rNAl 1.786 1.676 -0.111
CaH Calcium monohydride rHCa 2.003 2.093 0.090
CaCl calcium monochloride rClCa 2.437 2.527 0.090
ClF+ clorine monofluoride cation rFCl 1.448 1.531 0.082
CuF Copper monofluoride rCuF 1.745 1.664 -0.080
B2 Boron diatomic rBB 1.590 1.521 -0.069
C2 Carbon diatomic rCC 1.243 1.311 0.068
NaLi lithium sodium rLiNa 2.889 2.951 0.062
CuH Copper monohydride rHCu 1.463 1.401 -0.062
CuCl Copper monochloride rCuCl 2.051 1.995 -0.056
19 molecules.