return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Geometry > Bad Calculations > Bad Calculated Bond Lengths OR Resources > Bad Calculations > Geometry > Bad Calculated Bond Lengths

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 TPSSh/6-31G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 2.050 -0.933
C4H4N2O2 Uracil rNH 0.836 1.011 0.175
C4H4N2O2 Uracil rCH 0.931 1.081 0.150
C4H4N2O2 Uracil rNH 0.877 1.015 0.138
C4H4N2O2 Uracil rCH 0.957 1.085 0.128
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.475 0.427
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.434 1.317
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.182 0.736
C2F4 Tetrafluoroethylene rCF 1.319 1.425 0.106
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
C3H3NO Isoxazole rCH 1.075 1.422 0.347
C2H4O3 trioxolane124 rCN 1.303 1.418 0.114
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.665 0.325
C4H10O Methyl propyl ether rCC 1.530 1.097 -0.433
C4H10O Methyl propyl ether rCH 1.099 1.414 0.315
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.526 -0.278
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.528 -0.276
CaO Calcium monoxide rOCa 1.822 2.024 0.202
CF3 Trifluoromethyl radical rCF 1.318 1.431 0.113
HOCO+ Hydrocarboxyl cation rCO 1.209 1.340 0.132
C4H6 1-Methylcyclopropene rCH 1.085 4.226 3.141
C4H6 1-Methylcyclopropene rCH 1.087 3.430 2.343
C4H6 1-Methylcyclopropene rCC 1.476 2.263 0.787
C4H6 1-Methylcyclopropene rCH 1.087 1.827 0.740
C4H6 1-Methylcyclopropene rCH 1.098 1.781 0.683
C4H6 1-Methylcyclopropene rCH 1.098 1.763 0.665
C4H6 1-Methylcyclopropene rCH 1.070 1.511 0.441
C4H6 1-Methylcyclopropene rCC 1.515 1.096 -0.419
C4H6 1-Methylcyclopropene rCC 1.300 1.506 0.206
CH3SO2NH2 methanesulfonamide rCN 1.207 1.703 0.496
HCP+ Phosphaethyne cation rCP 1.601 1.086 -0.515
H2SO4 Sulfuric acid rOH 0.970 2.883 1.913
PF3 Phosphorus trifluoride rFP 1.561 1.678 0.117
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
AsF5 Arsenic pentafluoride rAsF 1.711 1.921 0.210
AsF5 Arsenic pentafluoride rAsF 1.656 1.835 0.179
LiK Lithium Potassium rLiK 3.270 3.387 0.117
NO3 Nitrogen trioxide rNO 1.238 1.351 0.113
GaP Gallium monophosphide rPGa 2.450 2.217 -0.233
Ne2 Neon diatomic rNeNe 3.100 2.988 -0.112
Cu2 Copper diatomic rCuCu 2.220 2.075 -0.145
ArH+ Argon hydride cation rArH 1.292 1.441 0.149
Na2Cl2 Disodium dichloride rNaCl 2.584 3.247 0.663
ClOOCl Dichlorine dioxide rOCl 1.704 1.576 -0.128
NaO sodium monoxide rONa 2.052 1.846 -0.205
Ar2+ Argon diatomic cation rArAr 2.320 2.634 0.314
Ar2 Argon diatomic rArAr 3.758 4.011 0.253
AlCl Aluminum monochloride rAlCl 2.130 2.420 0.289
B2Cl4 Diboron tetrachloride rBB 1.702 1.545 -0.157
CaF Calcium monofluoride rFCa 1.967 2.280 0.313
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.285 0.245
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.089 -0.151
HSSSH trisulfane rHS 1.344 2.078 0.735
Li2+ lithium diatomic cation rLiLi 3.112 2.956 -0.156
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
B2 Boron diatomic rBB 1.590 1.459 -0.131
CaH Calcium monohydride rCaH 2.003 2.118 0.115
CaCl calcium monochloride rClCa 2.437 2.553 0.117
CaS Calcium sulfide rSCa 2.318 2.476 0.158
AlP Aluminum monophosphide rAlP 2.400 2.219 -0.181
AlP Aluminum monophosphide rAlP 2.220 2.083 -0.137
K2 Potassium diatomic rKK 3.905 4.091 0.186
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
Al2 Aluminum diatomic rAlAl 2.701 2.516 -0.185
CaC Calcium monocarbide rCCa 2.302 2.418 0.117
65 molecules.