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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 HF/CEP-121G*

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.363 0.933
H2ONH3 Water Ammonia Dimer rNH 2.983 2.108 -0.875
C4H6O2 2,3-Butanedione rCH 1.114 1.554 0.440
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.538 0.425
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.535 0.422
Be2 Beryllium diatomic rBeBe 2.460 2.053 -0.407
Al2 Aluminum diatomic rAlAl 2.701 3.000 0.299
C4H8O2 1,3-Dioxane rCH 1.095 1.393 0.298
N2O3 Dinitrogen trioxide rNN 1.864 1.588 -0.276
B2 Boron diatomic rBB 1.590 1.344 -0.246
Na2+ sodium dimer cation rNaNa 3.540 3.760 0.220
N2O4 Dinitrogen tetroxide rNN 1.782 1.589 -0.193
Si2 Silicon diatomic rSiSi 2.246 2.070 -0.176
FNO Nitrosyl fluoride rNF 1.512 1.394 -0.118
Li2 Lithium diatomic rLiLi 2.673 2.790 0.117
NaLi lithium sodium rLiNa 2.889 3.005 0.116
FNO3 Fluorine nitrate rNO 1.507 1.395 -0.112
NO3 Nitrogen trioxide rNO 1.238 1.345 0.108
CO Carbon monoxide rCO 1.206 1.117 -0.089
CO Carbon monoxide rCO 1.206 1.117 -0.089
HNO2 Nitrous acid rNO 1.442 1.355 -0.087
AlO Aluminum monoxide rAlO 1.618 1.704 0.086
ClF+ clorine monofluoride cation rFCl 1.448 1.534 0.085
ClNO Nitrosyl chloride rNCl 1.975 1.890 -0.085
S2Cl2 Disulfur dichloride rSS 1.931 2.015 0.084
BN boron nitride rBN 1.325 1.243 -0.082
PS phosphorus sulfide rPS 1.900 1.980 0.080
B2 Boron diatomic rBB 1.590 1.512 -0.078
F3NO Nitrogen trifluoride oxide rNF 1.431 1.355 -0.076
ClNO2 Nitryl chloride rNCl 1.840 1.765 -0.075
H2O2 Hydrogen peroxide rOO 1.475 1.401 -0.074
NS Mononitrogen monosulfide rNS 1.497 1.569 0.072
CH3CH(CH3)ONO Iso-propyl nitrite rON 1.414 1.343 -0.071
CP Carbon monophosphide rCP 1.562 1.633 0.071
F2 Fluorine diatomic rFF 1.412 1.342 -0.070
BO2 Boron dioxide rBO 1.265 1.197 -0.069
C2H5NO3 Nitric acid, ethyl ester rNO 1.407 1.340 -0.067
CH2O2 Dioxirane rOO 1.516 1.451 -0.065
HOF Hypofluorous acid rFO 1.442 1.378 -0.064
O3 Ozone rOO 1.278 1.215 -0.063
CH3ONO Methyl nitrite rNO 1.398 1.335 -0.063
Al2 Aluminum diatomic rAlAl 2.701 2.764 0.063
C2Cl2 dichloroacetylene rCC 1.246 1.183 -0.063
F2O Difluorine monoxide rFO 1.412 1.350 -0.062
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.338 -0.062
HNO3 Nitric acid rNO 1.406 1.344 -0.062
NCl nitrogen monochloride rNCl 1.611 1.672 0.062
CH3NO3 Methyl nitrate rNO 1.402 1.341 -0.061
FNO3 Fluorine nitrate rFO 1.409 1.351 -0.058
HNO Nitrosyl hydride rNH 1.090 1.033 -0.058
ClS2 Sulfur chloride rSS 1.906 1.963 0.057
C2 Carbon diatomic rCC 1.243 1.298 0.056
PCl5 Phosphorus pentachloride rPCl 2.214 2.159 -0.055
B2 Boron diatomic rBB 1.590 1.645 0.055
SO2Cl2 Sulfuryl chloride rSCl 2.076 2.021 -0.055
AlN Aluminum nitride rNAl 1.786 1.841 0.055
CF3OF Trifluoromethylhypofluorite rOF 1.421 1.366 -0.055
Si2H6 disilane rSiSi 2.320 2.373 0.053
B3N3H6 borazine rHN 1.050 0.997 -0.053
C3H8O2 1,3-Propanediol rCH 1.140 1.087 -0.053
C3H5Cl3 Propane, 1,2,3-trichloro- rCH 1.131 1.079 -0.052
C6H6 Fulvene rCH 1.130 1.078 -0.052
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.528 -0.052
C3H8O2 Propylene glycol rOH 1.000 0.949 -0.051
PCl phosphorus chloride rPCl 2.018 2.068 0.050
65 molecules.