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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 CISD/6-311+G(3df,2p)

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.418 0.343
C4H6 1-Methylcyclopropene rCH 1.085 4.180 3.095
C4H6 1-Methylcyclopropene rCH 1.087 3.397 2.310
C4H6 1-Methylcyclopropene rCC 1.476 2.242 0.766
C4H6 1-Methylcyclopropene rCH 1.087 1.811 0.724
C4H6 1-Methylcyclopropene rCH 1.098 1.763 0.665
C4H6 1-Methylcyclopropene rCH 1.098 1.748 0.650
C4H6 1-Methylcyclopropene rCC 1.515 1.083 -0.432
C4H6 1-Methylcyclopropene rCH 1.070 1.496 0.426
C4H6 1-Methylcyclopropene rCC 1.300 1.498 0.198
N2O4 Dinitrogen tetroxide rNN 1.782 1.618 -0.164
SiP Silicon monophosphide rSiP 2.078 1.976 -0.102
Ar2 Argon diatomic rArAr 3.758 3.988 0.230
S4 Sulfur tetramer rSS 2.155 1.996 -0.159
Na2 Sodium diatomic rNaNa 3.079 3.182 0.103
15 molecules.