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

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.427 0.352
C2H4O3 trioxolane124 rCN 1.303 2.171 0.868
C4H10O Methyl propyl ether rCC 1.530 1.094 -0.436
C4H10O Methyl propyl ether rCH 1.099 1.405 0.306
C4H6 1-Methylcyclopropene rCH 1.085 4.214 3.129
C4H6 1-Methylcyclopropene rCH 1.087 3.421 2.334
C4H6 1-Methylcyclopropene rCC 1.476 2.257 0.781
C4H6 1-Methylcyclopropene rCH 1.087 1.825 0.738
C4H6 1-Methylcyclopropene rCH 1.098 1.776 0.678
C4H6 1-Methylcyclopropene rCH 1.098 1.760 0.662
C4H6 1-Methylcyclopropene rCH 1.070 1.509 0.439
C4H6 1-Methylcyclopropene rCC 1.515 1.090 -0.425
C4H6 1-Methylcyclopropene rCC 1.300 1.509 0.209
CH3SO2NH2 methanesulfonamide rCN 1.207 1.660 0.454
PF3 Phosphorus trifluoride rFP 1.561 1.672 0.111
N2O4 Dinitrogen tetroxide rNN 1.782 1.669 -0.113
N2O3 Dinitrogen trioxide rNN 1.864 1.734 -0.130
NaK Sodium Potassium rNaK 3.589 3.451 -0.138
GaP Gallium monophosphide rPGa 2.450 2.251 -0.199
Ne2 Neon diatomic rNeNe 3.100 2.534 -0.566
Ar2 Argon diatomic rArAr 3.758 3.956 0.198
Ar2+ Argon diatomic cation rArAr 2.320 2.434 0.114
SeO3 selenium trioxide rSeO 1.688 1.582 -0.106
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.274 0.234
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.081 -0.159
HSSSH trisulfane rHS 1.344 2.070 0.726
CrH Chromium hydride rHCr 1.655 1.780 0.125
Be2 Beryllium diatomic rBeBe 2.460 2.683 0.223
CaS Calcium sulfide rSCa 2.318 2.449 0.131
AlP Aluminum monophosphide rAlP 2.400 2.236 -0.164
AlP Aluminum monophosphide rAlP 2.220 2.110 -0.110
K2 Potassium diatomic rKK 3.905 4.043 0.138
Mg2 Magnesium diatomic rMgMg 3.891 4.547 0.657
33 molecules.