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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 MP2FC/6-311G*

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.345 0.915
Be2 Beryllium diatomic rBeBe 2.460 1.797 -0.663
Mg2 Magnesium diatomic rMgMg 3.891 4.396 0.506
C4H6O2 2,3-Butanedione rCH 1.114 1.544 0.430
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.529 0.416
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.526 0.413
C4H8O2 1,3-Dioxane rCH 1.095 1.403 0.308
Al2 Aluminum diatomic rAlAl 2.701 2.991 0.290
Ne2 Neon dimer rNeNe 3.100 2.820 -0.280
FO2 Dioxygen monofluoride rFO 1.649 1.375 -0.274
Al2 Aluminum diatomic rAlAl 2.701 2.469 -0.232
B2 Boron diatomic rBB 1.590 1.387 -0.203
Si2 Silicon diatomic rSiSi 2.246 2.066 -0.180
Na2+ sodium dimer cation rNaNa 3.540 3.695 0.155
AlN Aluminum nitride rNAl 1.786 1.636 -0.151
NO3 Nitrogen trioxide rNO 1.238 1.381 0.143
ClNO2 Nitryl chloride rNCl 1.840 1.957 0.117
ClFO3 Perchloryl fluoride rFCl 1.598 1.714 0.116
ClF+ clorine monofluoride cation rFCl 1.448 1.553 0.104
ClNO Nitrosyl chloride rNCl 1.975 2.078 0.103
LiO lithium oxide rLiO 1.688 1.593 -0.095
Na2 Sodium diatomic rNaNa 3.079 3.168 0.089
ZnS Zinc sulfide rSZn 2.046 2.135 0.089
PS phosphorus sulfide rPS 1.900 1.818 -0.082
Si2 Silicon diatomic rSiSi 2.246 2.164 -0.082
C2 Carbon diatomic rCC 1.243 1.324 0.081
NaLi lithium sodium rLiNa 2.889 2.970 0.081
Li2 Lithium diatomic rLiLi 2.673 2.748 0.075
SeO Selenium monoxide rSeO 1.639 1.712 0.073
NS Mononitrogen monosulfide rNS 1.497 1.429 -0.068
CO Carbon monoxide rCO 1.206 1.139 -0.067
CO Carbon monoxide rCO 1.206 1.139 -0.067
SOCl2 thionyl chloride rSCl 2.076 2.143 0.067
Se2 Selenium diatomic rSeSe 2.166 2.231 0.065
As2 Arsenic diatomic rAsAs 2.103 2.166 0.063
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.517 -0.063
BrF5 bromine pentafluoride rFBr 1.689 1.752 0.063
B2 Boron diatomic rBB 1.590 1.528 -0.062
SO Sulfur monoxide rSO 1.481 1.540 0.059
PCl5 Phosphorus pentachloride rPCl 2.214 2.156 -0.058
BHCl2 Borane, dichloro- rBH 1.130 1.187 0.057
NaK Sodium Potassium rNaK 3.589 3.532 -0.057
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.344 -0.056
CH3CHNOH Acetaldoxime rCC 1.550 1.494 -0.056
ClF3 Chlorine trifluoride rFCl 1.697 1.750 0.053
HCF Fluoromethylene rCH 1.138 1.085 -0.053
46 molecules.