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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 B3LYPultrafine/6-31G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 1.941 -1.042
C3H3NO Isoxazole rCH 1.075 1.424 0.349
C4H10O Methyl propyl ether rCC 1.530 1.097 -0.433
C4H10O Methyl propyl ether rCH 1.099 1.409 0.310
CaO Calcium monoxide rOCa 1.822 2.033 0.211
C4H6 1-Methylcyclopropene rCH 1.085 4.223 3.138
C4H6 1-Methylcyclopropene rCH 1.087 3.430 2.343
C4H6 1-Methylcyclopropene rCC 1.476 2.265 0.789
C4H6 1-Methylcyclopropene rCH 1.087 1.825 0.738
C4H6 1-Methylcyclopropene rCH 1.098 1.780 0.682
C4H6 1-Methylcyclopropene rCH 1.098 1.762 0.664
C4H6 1-Methylcyclopropene rCH 1.070 1.512 0.442
C4H6 1-Methylcyclopropene rCC 1.515 1.096 -0.419
C4H6 1-Methylcyclopropene rCC 1.300 1.507 0.207
CH3SO2NH2 methanesulfonamide rCN 1.207 1.701 0.494
He2+ helium diatomic cation rHeHe 1.081 1.220 0.140
CaBr Calcium monobromide rCaBr 2.594 2.699 0.106
GaP Gallium monophosphide rPGa 2.450 2.243 -0.207
Ne2 Neon diatomic rNeNe 3.100 2.506 -0.594
ClOOCl Dichlorine dioxide rOCl 1.704 1.810 0.106
Ar2 Argon diatomic rArAr 3.758 4.339 0.581
Ar2+ Argon diatomic cation rArAr 2.320 2.631 0.311
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.295 0.255
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.093 -0.147
HSSSH trisulfane rHS 1.344 2.099 0.755
CaH Calcium monohydride rCaH 2.003 2.123 0.121
CaS Calcium sulfide rSCa 2.318 2.490 0.172
AlP Aluminum monophosphide rAlP 2.400 2.236 -0.164
AlP Aluminum monophosphide rAlP 2.220 2.093 -0.127
Al2 Aluminum diatomic rAlAl 2.701 2.514 -0.187
CaC Calcium monocarbide rCCa 2.302 2.430 0.128
31 molecules.