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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/TZVP

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 2.053 -0.930
C4H4N2O2 Uracil rNH 0.836 1.006 0.170
C4H4N2O2 Uracil rCH 0.931 1.078 0.147
C4H4N2O2 Uracil rNH 0.877 1.010 0.133
C4H4N2O2 Uracil rCH 0.957 1.081 0.124
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.468 0.420
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.421 1.304
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.171 0.725
C4H8S Thiophene, tetrahydro- rCC 1.532 3.295 1.763
C4H8S Thiophene, tetrahydro- rCH 1.117 1.837 0.720
C4H8S Thiophene, tetrahydro- rCS 1.835 2.158 0.323
C2F4 Tetrafluoroethylene rCF 1.319 1.426 0.107
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
C3H3NO Isoxazole rCH 1.075 1.419 0.344
C2H4O3 trioxolane124 rCN 1.303 1.407 0.104
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.429 0.101
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.664 0.324
C4H10O Methyl propyl ether rCC 1.530 1.093 -0.437
C4H10O Methyl propyl ether rCH 1.099 1.402 0.303
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 2.112 0.290
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 4.194 3.109
C4H6 1-Methylcyclopropene rCH 1.087 3.411 2.324
C4H6 1-Methylcyclopropene rCC 1.476 2.255 0.779
C4H6 1-Methylcyclopropene rCH 1.087 1.826 0.739
C4H6 1-Methylcyclopropene rCH 1.098 1.776 0.678
C4H6 1-Methylcyclopropene rCH 1.098 1.758 0.660
C4H6 1-Methylcyclopropene rCH 1.070 1.506 0.436
C4H6 1-Methylcyclopropene rCC 1.515 1.090 -0.425
C4H6 1-Methylcyclopropene rCC 1.300 1.507 0.207
CH3SO2NH2 methanesulfonamide rCN 1.207 1.684 0.477
KCl Potassium Chloride rKCl 2.667 2.809 0.142
H2SO4 Sulfuric acid rOH 0.970 2.862 1.892
KH Potassium hydride rKH 2.243 2.343 0.100
KBr Potassium Bromide rKBr 2.821 2.955 0.134
PF3 Phosphorus trifluoride rFP 1.561 1.681 0.120
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
KF Potassium Fluoride rKF 2.171 2.297 0.125
CaBr2 Calcium dibromide rCaBr 2.616 2.735 0.119
CaBr Calcium monobromide rCaBr 2.594 2.781 0.187
NO3 Nitrogen trioxide rNO 1.238 1.348 0.111
GaP Gallium monophosphide rPGa 2.450 2.254 -0.196
SiP Silicon monophosphide rSiP 2.078 1.977 -0.101
CaOH Calcium monohydroxide rOCa 1.976 2.153 0.177
Na2Cl2 Disodium dichloride rNaCl 2.584 3.279 0.695
ClOOCl Dichlorine dioxide rOCl 1.704 1.575 -0.129
NaO sodium monoxide rONa 2.052 1.862 -0.190
Ar2 Argon diatomic rArAr 3.758 4.111 0.353
Ar2+ Argon diatomic cation rArAr 2.320 2.535 0.215
Si2 Silicon diatomic rSiSi 2.246 2.144 -0.102
AlCl Aluminum monochloride rAlCl 2.130 2.420 0.289
B2Cl4 Diboron tetrachloride rBB 1.702 1.546 -0.156
CaF Calcium monofluoride rFCa 1.967 2.280 0.313
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.288 0.248
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.088 -0.152
HSSSH trisulfane rHS 1.344 2.075 0.732
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 2.937 -0.175
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
B2 Boron diatomic rBB 1.590 1.434 -0.156
CaH Calcium monohydride rCaH 2.003 2.166 0.164
CaCl calcium monochloride rClCa 2.437 2.651 0.215
CaS Calcium sulfide rSCa 2.318 2.546 0.229
AlP Aluminum monophosphide rAlP 2.400 2.223 -0.177
AlP Aluminum monophosphide rAlP 2.260 2.088 -0.172
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 2.487 0.186
74 molecules.