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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 MP2/aug-cc-pVQZ

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.409 0.334
C4H6 1-Methylcyclopropene rCH 1.085 4.202 3.117
C4H6 1-Methylcyclopropene rCH 1.087 3.404 2.317
C4H6 1-Methylcyclopropene rCC 1.476 2.249 0.773
C4H6 1-Methylcyclopropene rCH 1.087 1.825 0.738
C4H6 1-Methylcyclopropene rCH 1.098 1.771 0.673
C4H6 1-Methylcyclopropene rCH 1.098 1.754 0.656
C4H6 1-Methylcyclopropene rCH 1.070 1.506 0.436
C4H6 1-Methylcyclopropene rCC 1.515 1.086 -0.429
C4H6 1-Methylcyclopropene rCC 1.300 1.508 0.208
FO Oxygen monofluoride rFO 1.354 1.500 0.146
Be2 Beryllium diatomic rBeBe 2.460 2.726 0.266
S4 Sulfur tetramer rSS 2.155 2.585 0.430
AlP Aluminum monophosphide rAlP 2.400 2.191 -0.209
AlP Aluminum monophosphide rAlP 2.220 2.052 -0.168
Mg2 Magnesium diatomic rMgMg 3.891 4.188 0.298
Al2 Aluminum diatomic rAlAl 2.701 2.463 -0.238
17 molecules.