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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 CISD/6-311G*

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.342 0.912
C4H6O2 2,3-Butanedione rCH 1.114 1.541 0.427
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.527 0.414
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.524 0.411
C4H8O2 1,3-Dioxane rCH 1.095 1.388 0.293
Al2 Aluminum diatomic rAlAl 2.701 2.991 0.290
Ne2 Neon dimer rNeNe 3.100 2.837 -0.263
Si2 Silicon diatomic rSiSi 2.246 2.056 -0.190
Na2+ sodium dimer cation rNaNa 3.540 3.695 0.155
ZnS Zinc sulfide rSZn 2.046 2.164 0.117
AlN Aluminum nitride rNAl 1.786 1.676 -0.110
ClF+ clorine monofluoride cation rFCl 1.448 1.556 0.108
C2 Carbon diatomic rCC 1.243 1.314 0.071
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.515 -0.065
B2 Boron diatomic rBB 1.590 1.530 -0.060
CuCl Copper monochloride rCuCl 2.051 2.110 0.059
He2+ helium dimer cation rHeHe 1.081 1.138 0.057
C2H5NO3 Nitric acid, ethyl ester rNO 1.407 1.352 -0.055
Cu2 Copper dimer rCuCu 2.220 2.273 0.053
HCF Fluoromethylene rCH 1.138 1.085 -0.053
NaLi lithium sodium rLiNa 2.889 2.940 0.051
C3H8O2 1,3-Propanediol rCH 1.140 1.089 -0.051
B3N3H6 borazine rHN 1.050 0.999 -0.051
LiCl- lithium chloride anion rLiCl 2.180 2.130 -0.050
24 molecules.