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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 MP4/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.535 0.422
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.533 0.420
Al2 Aluminum diatomic rAlAl 2.701 2.994 0.293
Ne2 Neon dimer rNeNe 3.100 2.820 -0.280
N2O3 Dinitrogen trioxide rNN 1.864 2.057 0.193
B2 Boron diatomic rBB 1.590 1.410 -0.180
Si2 Silicon diatomic rSiSi 2.246 2.081 -0.165
Na2+ sodium dimer cation rNaNa 3.540 3.695 0.155
AlN Aluminum nitride rNAl 1.786 1.642 -0.144
ClF+ clorine monofluoride cation rFCl 1.448 1.569 0.121
ZnS Zinc sulfide rSZn 2.046 2.161 0.114
C2 Carbon diatomic rCC 1.243 1.333 0.091
SeO Selenium monoxide rSeO 1.639 1.724 0.084
Se2 Selenium diatomic rSeSe 2.166 2.241 0.075
TiCl4 Titanium tetrachloride rTiCl 2.170 2.239 0.069
SO Sulfur monoxide rSO 1.481 1.545 0.064
As2 Arsenic diatomic rAsAs 2.103 2.164 0.062
S2 Sulfur diatomic rSS 1.889 1.950 0.061
Cl2+ chlorine diatomic cation rClCl 1.892 1.951 0.060
SO2F2 Sulfuryl fluoride rFS 1.530 1.585 0.055
NaK Sodium Potassium rNaK 3.589 3.534 -0.055
B2 Boron diatomic rBB 1.590 1.535 -0.055
LiCl- lithium chloride anion rLiCl 2.180 2.127 -0.053
SO+ sulfur monoxide cation rOS 1.424 1.476 0.052
SCl2 Sulfur dichloride rSCl 2.014 2.066 0.052
Se2 Selenium diatomic rSeSe 2.166 2.217 0.051
NS+ nitrogen sulfide cation rNS 1.440 1.491 0.051
27 molecules.