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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 B3PW91/6-31G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.420 0.345
C4H10O Methyl propyl ether rCC 1.530 1.097 -0.433
C4H10O Methyl propyl ether rCH 1.099 1.404 0.305
CaO Calcium monoxide rOCa 1.822 2.021 0.199
C5H10S 2H-Thiopyran, tetrahydro- rCC 1.528 2.753 1.225
C5H10S 2H-Thiopyran, tetrahydro- rCS 1.811 2.797 0.986
C4H6 1-Methylcyclopropene rCH 1.085 4.221 3.136
C4H6 1-Methylcyclopropene rCH 1.087 3.421 2.334
C4H6 1-Methylcyclopropene rCC 1.476 2.261 0.785
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 1.761 0.663
C4H6 1-Methylcyclopropene rCH 1.070 1.507 0.437
C4H6 1-Methylcyclopropene rCC 1.515 1.097 -0.418
C4H6 1-Methylcyclopropene rCC 1.300 1.503 0.203
CH3SO2NH2 methanesulfonamide rCN 1.207 1.689 0.482
He2+ helium diatomic cation rHeHe 1.081 1.220 0.139
LiK Lithium Potassium rLiK 3.270 3.404 0.134
GaP Gallium monophosphide rPGa 2.450 2.221 -0.229
Ne2 Neon diatomic rNeNe 3.100 2.841 -0.259
Cu2 Copper diatomic rCuCu 2.220 2.020 -0.199
ClOOCl Dichlorine dioxide rOO 1.426 1.323 -0.103
Ar2+ Argon diatomic cation rArAr 2.320 2.617 0.297
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.283 0.243
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.086 -0.154
HSSSH trisulfane rHS 1.344 2.079 0.735
CaH Calcium monohydride rCaH 2.003 2.118 0.115
CaCl calcium monochloride rClCa 2.437 2.559 0.122
CaS Calcium sulfide rSCa 2.318 2.473 0.155
HBO Boron hydride oxide rBO 1.200 2.380 1.180
AlP Aluminum monophosphide rAlP 2.400 2.221 -0.179
AlP Aluminum monophosphide rAlP 2.220 2.082 -0.138
K2 Potassium diatomic rKK 3.905 4.023 0.118
Mg2 Magnesium diatomic rMgMg 3.891 3.604 -0.287
Al2 Aluminum diatomic rAlAl 2.701 2.489 -0.212
CaC Calcium monocarbide rCCa 2.302 2.412 0.110
36 molecules.