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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/6-31G(2df,p)

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.428 0.353
C2H4O3 trioxolane124 rCN 1.303 2.153 0.850
C4H10O Methyl propyl ether rCC 1.530 1.087 -0.443
C4H10O Methyl propyl ether rCH 1.099 1.388 0.289
CaO Calcium monoxide rOCa 1.822 1.925 0.102
C4H6 1-Methylcyclopropene rCH 1.085 4.177 3.092
C4H6 1-Methylcyclopropene rCH 1.087 3.407 2.320
C4H6 1-Methylcyclopropene rCC 1.476 2.244 0.768
C4H6 1-Methylcyclopropene rCH 1.087 1.807 0.720
C4H6 1-Methylcyclopropene rCH 1.098 1.765 0.667
C4H6 1-Methylcyclopropene rCH 1.098 1.751 0.653
C4H6 1-Methylcyclopropene rCC 1.515 1.084 -0.431
C4H6 1-Methylcyclopropene rCH 1.070 1.495 0.425
C4H6 1-Methylcyclopropene rCC 1.300 1.494 0.194
CH3SO2NH2 methanesulfonamide rCN 1.207 1.632 0.425
F2+ flourine diatomic cation rFF 1.322 1.215 -0.107
FNO Nitrosyl fluoride rNF 1.512 1.371 -0.141
FNO3 Fluorine nitrate rNO 1.507 1.381 -0.126
FNO2 Nitryl fluoride rNF 1.467 1.333 -0.134
N2O4 Dinitrogen tetroxide rNN 1.782 1.579 -0.203
N2O3 Dinitrogen trioxide rNN 1.864 1.582 -0.282
LiK Lithium Potassium rLiK 3.270 3.500 0.230
VO Vanadium monoxide rVO 1.589 1.720 0.130
GaP Gallium monophosphide rPGa 2.450 2.272 -0.178
Ne2 Neon diatomic rNeNe 3.100 2.635 -0.465
NaLi lithium sodium rLiNa 2.889 2.994 0.105
NaO sodium monoxide rONa 2.052 1.933 -0.118
Ar2 Argon diatomic rArAr 3.758 4.404 0.646
Ar2+ Argon diatomic cation rArAr 2.320 2.446 0.126
Si2 Silicon diatomic rSiSi 2.246 2.140 -0.106
SeO3 selenium trioxide rSeO 1.688 1.542 -0.146
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.283 0.243
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.080 -0.160
HSSSH trisulfane rHS 1.344 2.055 0.712
CrH Chromium hydride rHCr 1.655 1.814 0.159
Li2 Lithium diatomic rLiLi 2.673 2.807 0.134
Be2 Beryllium diatomic rBeBe 2.460 4.513 2.053
CaCl calcium monochloride rClCa 2.437 2.543 0.106
S4 Sulfur tetramer rSS 2.155 1.964 -0.191
CaS Calcium sulfide rSCa 2.318 2.432 0.114
AlP Aluminum monophosphide rAlP 2.400 2.256 -0.144
AlP Aluminum monophosphide rAlP 2.220 2.107 -0.113
Na2 Sodium diatomic rNaNa 3.079 3.189 0.110
K2 Potassium diatomic rKK 3.905 4.201 0.296
Mg2 Magnesium diatomic rMgMg 3.891 2.518 -1.373
Al2 Aluminum diatomic rAlAl 2.701 2.257 -0.444
46 molecules.