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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/6-31+G**

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 1.009 0.173
C4H4N2O2 Uracil rCH 0.931 1.080 0.149
C4H4N2O2 Uracil rNH 0.877 1.012 0.135
C4H4N2O2 Uracil rCH 0.957 1.083 0.126
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.470 0.422
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.424 1.307
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.178 0.732
C4H8S Thiophene, tetrahydro- rCC 1.532 3.299 1.767
C4H8S Thiophene, tetrahydro- rCH 1.117 1.836 0.719
C4H8S Thiophene, tetrahydro- rCS 1.835 2.164 0.329
C2F4 Tetrafluoroethylene rCF 1.319 1.426 0.107
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
C3H3NO Isoxazole rCH 1.075 1.422 0.347
C2H4O3 trioxolane124 rCN 1.303 1.410 0.107
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.429 0.101
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.665 0.325
C4H10O Methyl propyl ether rCC 1.530 1.096 -0.434
C4H10O Methyl propyl ether rCH 1.099 1.404 0.305
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 2.035 0.213
CF3 Trifluoromethyl radical rCF 1.318 1.431 0.113
HOCO+ Hydrocarboxyl cation rCO 1.209 1.337 0.128
C4H6 1-Methylcyclopropene rCH 1.085 4.212 3.127
C4H6 1-Methylcyclopropene rCH 1.087 3.420 2.333
C4H6 1-Methylcyclopropene rCC 1.476 2.262 0.786
C4H6 1-Methylcyclopropene rCH 1.087 1.829 0.742
C4H6 1-Methylcyclopropene rCH 1.098 1.780 0.682
C4H6 1-Methylcyclopropene rCH 1.098 1.762 0.664
C4H6 1-Methylcyclopropene rCH 1.070 1.509 0.439
C4H6 1-Methylcyclopropene rCC 1.515 1.094 -0.421
C4H6 1-Methylcyclopropene rCC 1.300 1.511 0.211
CH3SO2NH2 methanesulfonamide rCN 1.207 1.677 0.470
H2SO4 Sulfuric acid rOH 0.970 2.867 1.897
PF3 Phosphorus trifluoride rFP 1.561 1.680 0.119
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
AsF5 Arsenic pentafluoride rAsF 1.711 1.924 0.213
AsF5 Arsenic pentafluoride rAsF 1.656 1.833 0.177
CaBr Calcium monobromide rCaBr 2.594 2.706 0.113
NO3 Nitrogen trioxide rNO 1.238 1.346 0.108
GaP Gallium monophosphide rPGa 2.450 2.217 -0.233
SiP Silicon monophosphide rSiP 2.078 1.974 -0.103
CaOH Calcium monohydroxide rOCa 1.976 2.114 0.138
Na2Cl2 Disodium dichloride rNaCl 2.584 3.254 0.670
ClOOCl Dichlorine dioxide rOCl 1.704 1.574 -0.130
NaO sodium monoxide rONa 2.052 1.861 -0.191
Ar2 Argon diatomic rArAr 3.758 4.114 0.356
Ar2+ Argon diatomic cation rArAr 2.320 2.556 0.236
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 2.286 0.246
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.085 -0.155
HSSSH trisulfane rHS 1.344 2.071 0.728
B2F4 Diboron tetrafluoride rBB 1.720 1.505 -0.215
B2F4 Diboron tetrafluoride rBF 1.317 1.441 0.124
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 1.440 -0.150
CaH Calcium monohydride rCaH 2.003 2.109 0.106
CaCl calcium monochloride rClCa 2.437 2.566 0.129
TiCl Titanium Monochloride rClTi 2.265 2.371 0.107
CaS Calcium sulfide rSCa 2.318 2.465 0.148
AlP Aluminum monophosphide rAlP 2.220 2.087 -0.133
K2 Potassium diatomic rKK 3.905 4.007 0.101
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
Al2 Aluminum diatomic rAlAl 2.701 2.515 -0.186
69 molecules.