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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 MP3/6-31G*

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 2.188 0.884
C4H10O Methyl propyl ether rCC 1.530 1.095 -0.435
C4H10O Methyl propyl ether rCH 1.099 1.412 0.313
CaO Calcium monoxide rOCa 1.822 2.174 0.352
C4H6 1-Methylcyclopropene rCH 1.085 4.218 3.133
C4H6 1-Methylcyclopropene rCH 1.087 3.426 2.339
C4H6 1-Methylcyclopropene rCC 1.476 2.263 0.787
C4H6 1-Methylcyclopropene rCH 1.087 1.824 0.737
C4H6 1-Methylcyclopropene rCH 1.098 1.779 0.681
C4H6 1-Methylcyclopropene rCH 1.098 1.765 0.667
C4H6 1-Methylcyclopropene rCH 1.070 1.507 0.437
C4H6 1-Methylcyclopropene rCC 1.515 1.093 -0.422
C4H6 1-Methylcyclopropene rCC 1.300 1.510 0.210
CH3SO2NH2 methanesulfonamide rCN 1.207 1.676 0.469
CaBr Calcium monobromide rCaBr 2.594 2.712 0.118
N2O4 Dinitrogen tetroxide rNN 1.782 1.676 -0.106
N2O3 Dinitrogen trioxide rNN 1.864 1.735 -0.129
LiK Lithium Potassium rLiK 3.270 3.372 0.102
GaP Gallium monophosphide rPGa 2.450 2.236 -0.214
Ne2 Neon diatomic rNeNe 3.100 2.603 -0.497
NaO sodium monoxide rONa 2.052 1.938 -0.113
Ar2 Argon diatomic rArAr 3.758 4.211 0.453
Ar2+ Argon diatomic cation rArAr 2.320 2.523 0.203
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.268 0.228
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.079 -0.161
HSSSH trisulfane rHS 1.344 2.077 0.733
CrH Chromium hydride rHCr 1.655 1.798 0.143
Be2 Beryllium diatomic rBeBe 2.460 4.016 1.556
CaH Calcium monohydride rCaH 2.003 2.137 0.134
CaS Calcium sulfide rSCa 2.318 2.517 0.200
AlP Aluminum monophosphide rAlP 2.400 2.215 -0.185
AlP Aluminum monophosphide rAlP 2.220 2.067 -0.153
K2 Potassium diatomic rKK 3.905 4.057 0.152
Mg2 Magnesium diatomic rMgMg 3.891 4.245 0.354
CaC Calcium monocarbide rCCa 2.302 2.408 0.107
36 molecules.