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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 MP2FU/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
Be2 Beryllium diatomic rBeBe 2.460 2.023 -0.437
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 1.525 0.412
C4H8O2 1,3-Dioxane rCH 1.095 1.402 0.307
Al2 Aluminum diatomic rAlAl 2.701 2.991 0.290
Ne2 Neon dimer rNeNe 3.100 2.818 -0.282
B2 Boron diatomic rBB 1.590 1.385 -0.205
Si2 Silicon diatomic rSiSi 2.246 2.064 -0.182
AlN Aluminum nitride rNAl 1.786 1.635 -0.152
Na2+ sodium dimer cation rNaNa 3.540 3.659 0.119
ClF+ clorine monofluoride cation rFCl 1.448 1.552 0.104
ZnS Zinc sulfide rSZn 2.046 2.134 0.087
NaK Sodium Potassium rNaK 3.589 3.503 -0.086
Si2 Silicon diatomic rSiSi 2.246 2.163 -0.083
C2 Carbon diatomic rCC 1.243 1.323 0.080
SeO Selenium monoxide rSeO 1.639 1.711 0.072
SOCl2 thionyl chloride rSCl 2.076 2.141 0.065
B2 Boron diatomic rBB 1.590 1.526 -0.064
BrF5 bromine pentafluoride rFBr 1.689 1.751 0.062
CuH Copper monohydride rHCu 1.463 1.402 -0.060
Se2 Selenium diatomic rSeSe 2.166 2.225 0.059
SO Sulfur monoxide rSO 1.481 1.539 0.058
LiCl- lithium chloride anion rLiCl 2.180 2.123 -0.057
NaLi lithium sodium rLiNa 2.889 2.941 0.052
CuO Copper Monoxide rCuO 1.724 1.672 -0.052
As2 Arsenic diatomic rAsAs 2.103 2.154 0.051
27 molecules.