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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 MP4/6-31G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
CH3NHCH3 Dimethylamine rCH 1.084 3.365 2.281
C4H10O Methyl propyl ether rCC 1.530 1.099 -0.431
C4H10O Methyl propyl ether rCH 1.099 1.420 0.321
BeO beryllium oxide rBeO 1.331 1.455 0.124
CaO Calcium monoxide rOCa 1.822 1.958 0.136
LiOH lithium hydroxide rOH 0.969 2.564 1.594
HCO Formyl radical rCO 1.198 2.048 0.850
CH3S thiomethoxy rCH 1.090 2.378 1.288
TiCl4 Titanium tetrachloride rTiCl 2.170 2.356 0.186
N2O3 Dinitrogen trioxide rNN 1.864 2.095 0.231
FO Oxygen monofluoride rFO 1.354 1.503 0.149
GaP Gallium monophosphide rPGa 2.450 2.238 -0.212
MgOH magnesium hydroxide rOH 0.940 2.607 1.667
CaOH Calcium monohydroxide rOCa 1.976 2.078 0.102
Ne2 Neon diatomic rNeNe 3.100 2.591 -0.509
Cu2 Copper diatomic rCuCu 2.220 2.008 -0.212
Na2Cl2 Disodium dichloride rNaCl 2.584 3.257 0.673
NaO sodium monoxide rONa 2.052 1.946 -0.106
Ar2 Argon diatomic rArAr 3.758 4.197 0.439
Ar2+ Argon diatomic cation rArAr 2.320 2.525 0.205
ClNO2 Nitryl chloride rNCl 1.840 1.983 0.143
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.271 0.231
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.084 -0.156
HSSSH trisulfane rHS 1.344 2.083 0.740
CrH Chromium hydride rHCr 1.655 1.802 0.147
Be2 Beryllium diatomic rBeBe 2.460 2.603 0.143
CaH Calcium monohydride rCaH 2.003 2.142 0.140
FOO Dioxygen monofluoride radical rFO 1.649 1.392 -0.257
CaCl calcium monochloride rClCa 2.437 2.568 0.131
S4 Sulfur tetramer rSS 2.155 2.797 0.642
CaS Calcium sulfide rSCa 2.318 2.542 0.225
HBO Boron hydride oxide rBO 1.200 2.400 1.200
GeO Germanium monoxide rOGe 1.625 1.770 0.146
AlP Aluminum monophosphide rAlP 2.400 2.217 -0.183
AlP Aluminum monophosphide rAlP 2.220 2.080 -0.140
K2 Potassium diatomic rKK 3.905 4.065 0.160
Mg2 Magnesium diatomic rMgMg 3.891 2.670 -1.221
Al2 Aluminum diatomic rAlAl 2.701 2.487 -0.214
38 molecules.