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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/3-21G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 2.027 -0.956
C4H4N2O2 Uracil rNH 0.836 1.012 0.176
C4H4N2O2 Uracil rCH 0.931 1.076 0.145
C4H4N2O2 Uracil rNH 0.877 1.014 0.137
C4H4N2O2 Uracil rCH 0.957 1.081 0.124
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.484 0.436
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.458 1.341
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.177 0.731
C4H8S Thiophene, tetrahydro- rCC 1.532 3.298 1.766
C4H8S Thiophene, tetrahydro- rCH 1.117 1.842 0.725
C4H8S Thiophene, tetrahydro- rCS 1.835 2.173 0.338
C2F4 Tetrafluoroethylene rCF 1.319 1.427 0.108
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
C3H3NO Isoxazole rCH 1.075 1.429 0.354
C2H4O3 trioxolane124 rCN 1.303 1.446 0.143
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.431 0.103
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 1.443 0.344
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.634 -0.170
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.635 -0.169
CaO Calcium monoxide rOCa 1.822 2.035 0.213
ZnS Zinc sulfide rSZn 2.046 1.929 -0.117
CuO Copper Monoxide rCuO 1.724 1.596 -0.128
CF3 Trifluoromethyl radical rCF 1.318 1.430 0.112
HOCO+ Hydrocarboxyl cation rCO 1.209 1.354 0.145
C4H6 1-Methylcyclopropene rCH 1.085 4.197 3.112
C4H6 1-Methylcyclopropene rCH 1.087 3.433 2.346
C4H6 1-Methylcyclopropene rCC 1.476 2.271 0.795
C4H6 1-Methylcyclopropene rCH 1.087 1.837 0.750
C4H6 1-Methylcyclopropene rCH 1.098 1.782 0.684
C4H6 1-Methylcyclopropene rCH 1.098 1.767 0.669
C4H6 1-Methylcyclopropene rCH 1.070 1.531 0.461
C4H6 1-Methylcyclopropene rCC 1.515 1.088 -0.427
C4H6 1-Methylcyclopropene rCC 1.300 1.534 0.234
CH3SO2NH2 methanesulfonamide rCN 1.207 1.636 0.429
H2SO4 Sulfuric acid rOH 0.970 2.915 1.945
PF3 Phosphorus trifluoride rFP 1.561 1.670 0.109
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
AsF5 Arsenic pentafluoride rAsF 1.711 1.919 0.208
AsF5 Arsenic pentafluoride rAsF 1.656 1.836 0.180
LiK Lithium Potassium rLiK 3.270 3.371 0.101
NO3 Nitrogen trioxide rNO 1.238 1.419 0.182
GaP Gallium monophosphide rPGa 2.450 2.254 -0.196
SiP Silicon monophosphide rSiP 2.078 1.964 -0.113
Cu2 Copper diatomic rCuCu 2.220 2.061 -0.158
Na2Cl2 Disodium dichloride rNaCl 2.584 3.264 0.680
ClOOCl Dichlorine dioxide rOCl 1.704 1.571 -0.134
NaLi lithium sodium rLiNa 2.889 3.004 0.115
NaO sodium monoxide rONa 2.052 1.825 -0.226
Ar2+ Argon diatomic cation rArAr 2.320 2.566 0.246
Si2 Silicon diatomic rSiSi 2.246 2.132 -0.114
CuF Copper monofluoride rCuF 1.745 1.607 -0.138
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 2.284 0.244
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.084 -0.156
HSSSH trisulfane rHS 1.344 2.064 0.720
B2F4 Diboron tetrafluoride rBB 1.720 1.502 -0.218
B2F4 Diboron tetrafluoride rBF 1.317 1.441 0.124
Li2+ lithium diatomic cation rLiLi 3.112 2.954 -0.158
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
B2 Boron diatomic rBB 1.590 1.445 -0.145
CaH Calcium monohydride rCaH 2.003 2.173 0.171
CaCl calcium monochloride rClCa 2.437 2.623 0.186
CaS Calcium sulfide rSCa 2.318 2.517 0.199
AlP Aluminum monophosphide rAlP 2.220 2.079 -0.141
Na2 Sodium diatomic rNaNa 3.079 3.194 0.115
K2 Potassium diatomic rKK 3.905 4.053 0.148
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
Al2 Aluminum diatomic rAlAl 2.701 2.501 -0.200
ZnCN Zinc monocyanide rCZn 1.950 1.836 -0.114
73 molecules.