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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/6-31+G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 1.972 -1.011
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.349 0.919
Be2 Beryllium diatomic rBeBe 2.460 1.800 -0.660
Mg2 Magnesium diatomic rMgMg 3.891 4.444 0.554
C4H6O2 2,3-Butanedione rCH 1.114 1.538 0.424
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.526 0.413
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.524 0.411
C4H8O2 1,3-Dioxane rCH 1.095 1.412 0.317
FO2 Dioxygen monofluoride rFO 1.649 1.385 -0.264
Al2 Aluminum diatomic rAlAl 2.701 2.954 0.253
Al2 Aluminum diatomic rAlAl 2.701 2.478 -0.223
B2 Boron diatomic rBB 1.590 1.391 -0.199
Si2 Silicon diatomic rSiSi 2.246 2.073 -0.173
NO3 Nitrogen trioxide rNO 1.238 1.391 0.153
CaOH Calcium monohydroxide rOCa 1.976 2.119 0.143
AlN Aluminum nitride rNAl 1.786 1.645 -0.141
Na2+ sodium dimer cation rNaNa 3.540 3.680 0.140
CaCl calcium monochloride rClCa 2.437 2.572 0.135
CaF Calcuium monofluoride rFCa 1.967 2.102 0.135
ClFO3 Perchloryl fluoride rFCl 1.598 1.716 0.118
Li2 Lithium diatomic rLiLi 2.673 2.787 0.114
ClF+ clorine monofluoride cation rFCl 1.448 1.561 0.113
CaH Calcium monohydride rHCa 2.003 2.111 0.109
KF Potassium Fluoride rKF 2.171 2.273 0.101
KCl Potassium Chloride rKCl 2.667 2.762 0.095
NaLi lithium sodium rLiNa 2.889 2.982 0.093
Na2 Sodium diatomic rNaNa 3.079 3.171 0.092
N2O4 Dinitrogen tetroxide rNN 1.782 1.868 0.086
KBr Potassium Bromide rKBr 2.821 2.906 0.085
FNO Nitrosyl fluoride rNF 1.512 1.593 0.081
C2 Carbon diatomic rCC 1.243 1.323 0.081
PS phosphorus sulfide rPS 1.900 1.820 -0.080
Si2 Silicon diatomic rSiSi 2.246 2.171 -0.075
N2O3 Dinitrogen trioxide rNN 1.864 1.937 0.073
PCl5 Phosphorus pentachloride rPCl 2.214 2.142 -0.072
O2+ diatomic oxygen cation rOO 1.116 1.187 0.071
SO Sulfur monoxide rSO 1.481 1.551 0.070
FNO3 Fluorine nitrate rNO 1.507 1.575 0.068
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.332 -0.068
SO2F2 Sulfuryl fluoride rFS 1.530 1.596 0.066
NS Mononitrogen monosulfide rNS 1.497 1.432 -0.065
B2 Boron diatomic rBB 1.590 1.525 -0.065
SeO Selenium monoxide rSeO 1.639 1.702 0.063
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.518 -0.062
Ne2 Neon dimer rNeNe 3.100 3.160 0.060
CH3CHNOH Acetaldoxime rCC 1.550 1.492 -0.058
NaF sodium fluoride rNaF 1.926 1.983 0.057
SO+ sulfur monoxide cation rOS 1.424 1.481 0.057
HCF Fluoromethylene rCH 1.138 1.082 -0.056
Li2O dilithium oxide rLiO 1.606 1.662 0.056
Se2 Selenium diatomic rSeSe 2.166 2.221 0.055
CO Carbon monoxide rCO 1.206 1.151 -0.054
CO Carbon monoxide rCO 1.206 1.151 -0.054
As2 Arsenic diatomic rAsAs 2.103 2.157 0.054
KH Potassium hydride rHK 2.243 2.296 0.054
ClNO Nitrosyl chloride rNCl 1.975 2.029 0.054
BrF5 bromine pentafluoride rFBr 1.689 1.742 0.053
SSO Disulfur monoxide rSO 1.456 1.509 0.053
LiBr Lithium Bromide rLiBr 2.170 2.223 0.053
C5H10 2-Pentene, (E)- rCC 1.576 1.524 -0.052
H2SO4 Sulfuric acid rSO 1.574 1.625 0.051
SO2 Sulfur dioxide rSO 1.432 1.482 0.050
62 molecules.