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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 QCISD(T)/cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
Ne2 Neon dimer rNeNe 3.100 2.746 -0.354
Al2 Aluminum diatomic rAlAl 2.701 3.048 0.347
Na2+ sodium dimer cation rNaNa 3.540 3.722 0.182
ClF+ clorine monofluoride cation rFCl 1.448 1.603 0.154
Si2 Silicon diatomic rSiSi 2.246 2.131 -0.115
C2 Carbon diatomic rCC 1.243 1.341 0.099
SOCl2 thionyl chloride rSCl 2.076 2.158 0.082
BrO Bromine monoxide rOBr 1.718 1.798 0.080
NaLi lithium sodium rLiNa 2.889 2.968 0.079
SO2F2 Sulfuryl fluoride rFS 1.530 1.607 0.077
SO Sulfur monoxide rSO 1.481 1.554 0.073
B2 Boron diatomic rBB 1.590 1.662 0.072
S2 Sulfur diatomic rSS 1.889 1.961 0.071
PF+ phosphorus monofluoride cation rFP 1.500 1.572 0.071
NCl nitrogen monochloride rNCl 1.611 1.681 0.070
SiF2 Silicon difluoride rFSi 1.590 1.657 0.067
PO- phosphorus monoxide anion rOP 1.540 1.605 0.065
SeO Selenium monoxide rSeO 1.639 1.703 0.064
AlN Aluminum nitride rNAl 1.786 1.848 0.062
Cl2+ chlorine diatomic cation rClCl 1.892 1.953 0.061
Se2 Selenium diatomic rSeSe 2.166 2.227 0.061
PF phosphorus monofluoride rPF 1.593 1.653 0.060
SiO+ silicon monoxide cation rOSi 1.519 1.578 0.059
SO2 Sulfur dioxide rSO 1.432 1.490 0.057
Li2O dilithium oxide rLiO 1.606 1.659 0.053
AlCl Aluminum monochloride rAlCl 2.130 2.183 0.053
Si2 Silicon diatomic rSiSi 2.246 2.297 0.051
27 molecules.