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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 wB97X-D/6-31G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 2.048 -0.935
C4H4N2O2 Uracil rNH 0.836 1.009 0.173
C4H4N2O2 Uracil rCH 0.931 1.081 0.150
C4H4N2O2 Uracil rNH 0.877 1.012 0.135
C4H4N2O2 Uracil rCH 0.957 1.084 0.127
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.468 0.420
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.423 1.306
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.178 0.732
C4H8S Thiophene, tetrahydro- rCC 1.532 3.301 1.769
C4H8S Thiophene, tetrahydro- rCH 1.117 1.837 0.720
C4H8S Thiophene, tetrahydro- rCS 1.835 2.164 0.329
C2F4 Tetrafluoroethylene rCF 1.319 1.425 0.106
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
C3H3NO Isoxazole rCH 1.075 1.421 0.346
C2H4O3 trioxolane124 rCN 1.303 1.409 0.106
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.664 0.324
C4H10O Methyl propyl ether rCC 1.530 1.096 -0.434
C4H10O Methyl propyl ether rCH 1.099 1.401 0.302
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.636 -0.168
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.636 -0.168
CaO Calcium monoxide rOCa 1.822 2.015 0.193
CF3 Trifluoromethyl radical rCF 1.318 1.430 0.112
HOCO+ Hydrocarboxyl cation rCO 1.209 1.337 0.128
C4H6 1-Methylcyclopropene rCH 1.085 4.213 3.128
C4H6 1-Methylcyclopropene rCH 1.087 3.421 2.334
C4H6 1-Methylcyclopropene rCC 1.476 2.262 0.786
C4H6 1-Methylcyclopropene rCH 1.087 1.827 0.740
C4H6 1-Methylcyclopropene rCH 1.098 1.780 0.682
C4H6 1-Methylcyclopropene rCH 1.098 1.763 0.665
C4H6 1-Methylcyclopropene rCH 1.070 1.508 0.438
C4H6 1-Methylcyclopropene rCC 1.515 1.095 -0.420
C4H6 1-Methylcyclopropene rCC 1.300 1.506 0.206
CH3SO2NH2 methanesulfonamide rCN 1.207 1.679 0.473
H2SO4 Sulfuric acid rOH 0.970 2.861 1.891
PF3 Phosphorus trifluoride rFP 1.561 1.674 0.113
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
AsF5 Arsenic pentafluoride rAsF 1.711 1.922 0.211
AsF5 Arsenic pentafluoride rAsF 1.656 1.834 0.178
NO3 Nitrogen trioxide rNO 1.238 1.345 0.107
GaP Gallium monophosphide rPGa 2.450 2.231 -0.219
SiP Silicon monophosphide rSiP 2.078 1.974 -0.103
Ne2 Neon diatomic rNeNe 3.100 2.990 -0.110
Cu2 Copper diatomic rCuCu 2.220 2.088 -0.132
Na2Cl2 Disodium dichloride rNaCl 2.584 3.249 0.665
ClOOCl Dichlorine dioxide rOCl 1.704 1.575 -0.129
NaO sodium monoxide rONa 2.052 1.848 -0.204
Ar2 Argon diatomic rArAr 3.758 4.050 0.292
Ar2+ Argon diatomic cation rArAr 2.320 2.567 0.247
Si2 Silicon diatomic rSiSi 2.246 2.143 -0.104
AlCl Aluminum monochloride rAlCl 2.130 2.420 0.289
B2Cl4 Diboron tetrachloride rBB 1.702 1.547 -0.155
CaF Calcium monofluoride rFCa 1.967 2.280 0.313
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.287 0.247
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.086 -0.154
HSSSH trisulfane rHS 1.344 2.071 0.727
B2F4 Diboron tetrafluoride rBB 1.720 1.501 -0.219
B2F4 Diboron tetrafluoride rBF 1.317 1.439 0.122
Li2+ lithium diatomic cation rLiLi 3.112 2.966 -0.146
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
B2 Boron diatomic rBB 1.590 1.439 -0.151
CaH Calcium monohydride rCaH 2.003 2.112 0.109
CaCl calcium monochloride rClCa 2.437 2.552 0.116
CaS Calcium sulfide rSCa 2.318 2.460 0.142
AlP Aluminum monophosphide rAlP 2.220 2.086 -0.134
K2 Potassium diatomic rKK 3.905 4.006 0.101
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
Al2 Aluminum diatomic rAlAl 2.701 2.516 -0.186
CaC Calcium monocarbide rCCa 2.302 2.407 0.106
68 molecules.