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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 BLYP/6-31G(2df,p)

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.429 0.354
C2H4O3 trioxolane124 rCN 1.303 2.223 0.919
C4H10O Methyl propyl ether rCC 1.530 1.103 -0.427
C4H10O Methyl propyl ether rCH 1.099 1.422 0.323
CaO Calcium monoxide rOCa 1.822 1.982 0.160
CFCl chlorofluoromethylene rCCl 1.714 1.821 0.107
C4H6 1-Methylcyclopropene rCH 1.085 4.239 3.154
C4H6 1-Methylcyclopropene rCH 1.087 3.445 2.358
C4H6 1-Methylcyclopropene rCC 1.476 2.278 0.802
C4H6 1-Methylcyclopropene rCH 1.087 1.836 0.749
C4H6 1-Methylcyclopropene rCH 1.098 1.789 0.691
C4H6 1-Methylcyclopropene rCH 1.098 1.768 0.670
C4H6 1-Methylcyclopropene rCH 1.070 1.523 0.453
C4H6 1-Methylcyclopropene rCC 1.515 1.101 -0.414
C4H6 1-Methylcyclopropene rCC 1.300 1.519 0.219
CH3SO2NH2 methanesulfonamide rCN 1.207 1.716 0.509
ClFO3 Perchloryl fluoride rFCl 1.598 1.704 0.106
He2+ helium diatomic cation rHeHe 1.081 1.185 0.104
N2O4 Dinitrogen tetroxide rNN 1.782 1.894 0.112
N2O3 Dinitrogen trioxide rNN 1.864 1.976 0.112
LiK Lithium Potassium rLiK 3.270 3.371 0.101
GaP Gallium monophosphide rPGa 2.450 2.258 -0.192
Ne2 Neon diatomic rNeNe 3.100 2.434 -0.666
Ne2+ Neon diatomic cation rNeNe 1.765 1.895 0.130
Cu2 Copper diatomic rCuCu 2.220 2.010 -0.210
ClOOCl Dichlorine dioxide rOCl 1.704 1.950 0.245
ClOOCl Dichlorine dioxide rOO 1.426 1.269 -0.157
Ar2 Argon diatomic rArAr 3.758 4.223 0.465
Ar2+ Argon diatomic cation rArAr 2.320 2.623 0.303
ClNO2 Nitryl chloride rNCl 1.840 1.980 0.140
SF5Cl sulfur chloropentafluoride rSCl 2.030 2.144 0.114
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.310 0.270
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.102 -0.138
HSSSH trisulfane rHS 1.344 2.108 0.765
CaH Calcium monohydride rCaH 2.003 2.103 0.101
CaS Calcium sulfide rSCa 2.318 2.455 0.137
AlP Aluminum monophosphide rAlP 2.400 2.242 -0.158
AlP Aluminum monophosphide rAlP 2.220 2.100 -0.120
Mg2 Magnesium diatomic rMgMg 3.891 3.769 -0.122
Al2 Aluminum diatomic rAlAl 2.701 2.519 -0.182
CaC Calcium monocarbide rCCa 2.302 2.405 0.104
41 molecules.