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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 HF/daug-cc-pVTZ

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 2.154 -0.829
C4H4N2O2 Uracil rNH 0.836 0.991 0.155
C4H4N2O2 Uracil rCH 0.931 1.068 0.137
C4H4N2O2 Uracil rNH 0.877 0.995 0.118
C4H4N2O2 Uracil rCH 0.957 1.072 0.115
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.463 0.415
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.404 1.287
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.165 0.719
C4H8S Thiophene, tetrahydro- rCC 1.532 3.290 1.758
C4H8S Thiophene, tetrahydro- rCH 1.117 1.829 0.712
C4H8S Thiophene, tetrahydro- rCS 1.835 2.149 0.314
C3H3NO Isoxazole rCH 1.075 1.427 0.352
CuO Copper Monoxide rCuO 1.724 1.871 0.147
C4H6 1-Methylcyclopropene rCH 1.085 4.170 3.085
C4H6 1-Methylcyclopropene rCH 1.087 3.402 2.315
C4H6 1-Methylcyclopropene rCC 1.476 2.241 0.765
C4H6 1-Methylcyclopropene rCH 1.087 1.806 0.719
C4H6 1-Methylcyclopropene rCH 1.098 1.762 0.664
C4H6 1-Methylcyclopropene rCH 1.098 1.748 0.650
C4H6 1-Methylcyclopropene rCC 1.515 1.082 -0.433
C4H6 1-Methylcyclopropene rCH 1.070 1.494 0.424
C4H6 1-Methylcyclopropene rCC 1.300 1.496 0.196
CH3SO2NH2 methanesulfonamide rCN 1.207 1.637 0.430
H2SO4 Sulfuric acid rOH 0.970 2.813 1.843
CuCl Copper monochloride rCuCl 2.051 2.180 0.129
F2+ flourine diatomic cation rFF 1.322 1.214 -0.108
FNO Nitrosyl fluoride rNF 1.512 1.390 -0.122
FNO3 Fluorine nitrate rNO 1.507 1.385 -0.122
FNO2 Nitryl fluoride rNF 1.467 1.339 -0.128
N2O4 Dinitrogen tetroxide rNN 1.782 1.592 -0.190
N2O3 Dinitrogen trioxide rNN 1.864 1.602 -0.262
VO Vanadium monoxide rVO 1.589 1.747 0.158
GaP Gallium monophosphide rPGa 2.450 2.148 -0.302
SiP Silicon monophosphide rSiP 2.078 1.970 -0.107
Ne2 Neon diatomic rNeNe 3.100 3.454 0.354
Cu2 Copper diatomic rCuCu 2.220 2.447 0.227
Na2Cl2 Disodium dichloride rNaCl 2.584 3.227 0.643
NaLi lithium sodium rLiNa 2.889 3.000 0.111
Ar2 Argon diatomic rArAr 3.758 5.081 1.323
Ar2+ Argon diatomic cation rArAr 2.320 2.438 0.118
Si2 Silicon diatomic rSiSi 2.246 2.144 -0.102
CuH Copper monohydride rCuH 1.463 1.570 0.108
SeO3 selenium trioxide rSeO 1.688 1.548 -0.139
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.286 0.246
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.085 -0.155
HSSSH trisulfane rHS 1.344 2.059 0.716
Li2 Lithium diatomic rLiLi 2.673 2.784 0.111
Be2 Beryllium diatomic rBeBe 2.460 2.048 -0.412
B2 Boron diatomic rBB 1.590 1.457 -0.133
S4 Sulfur tetramer rSS 2.155 1.969 -0.186
AlP Aluminum monophosphide rAlP 2.260 2.117 -0.143
AlP Aluminum monophosphide rAlP 2.400 2.268 -0.132
Na2 Sodium diatomic rNaNa 3.079 3.194 0.115
Mg2 Magnesium diatomic rMgMg 3.891 7.343 3.452
Al2 Aluminum diatomic rAlAl 2.701 2.549 -0.152
ONNO NO dimer rNN 2.236 1.516 -0.720
56 molecules.