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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 PBEPBE/6-31G*

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C3H3NO Isoxazole rCH 1.075 1.425 0.350
C4H10O Methyl propyl ether rCC 1.530 1.105 -0.425
C4H10O Methyl propyl ether rCH 1.099 1.414 0.315
CaO Calcium monoxide rOCa 1.822 2.042 0.220
C4H6 1-Methylcyclopropene rCH 1.085 4.250 3.165
C4H6 1-Methylcyclopropene rCH 1.087 3.438 2.351
C4H6 1-Methylcyclopropene rCC 1.476 2.276 0.800
C4H6 1-Methylcyclopropene rCH 1.087 1.840 0.753
C4H6 1-Methylcyclopropene rCH 1.098 1.792 0.694
C4H6 1-Methylcyclopropene rCH 1.098 1.772 0.674
C4H6 1-Methylcyclopropene rCH 1.070 1.517 0.447
C4H6 1-Methylcyclopropene rCC 1.515 1.105 -0.410
C4H6 1-Methylcyclopropene rCC 1.300 1.511 0.211
CH3SO2NH2 methanesulfonamide rCN 1.207 1.720 0.513
HClO4 perchloric acid rOCl 1.641 1.742 0.101
ClFO3 Perchloryl fluoride rFCl 1.598 1.705 0.107
He2+ helium diatomic cation rHeHe 1.081 1.269 0.188
CaBr Calcium monobromide rCaBr 2.594 2.696 0.102
LiK Lithium Potassium rLiK 3.270 3.389 0.119
GaP Gallium monophosphide rPGa 2.450 2.231 -0.219
Ne2 Neon diatomic rNeNe 3.100 2.492 -0.608
Ne2+ Neon diatomic cation rNeNe 1.765 1.886 0.121
Cu2 Copper diatomic rCuCu 2.220 2.009 -0.211
ClOOCl Dichlorine dioxide rOCl 1.704 1.944 0.240
ClOOCl Dichlorine dioxide rOO 1.426 1.261 -0.165
Ar2+ Argon diatomic cation rArAr 2.320 2.682 0.362
Ar2 Argon diatomic rArAr 3.758 3.863 0.105
ClNO2 Nitryl chloride rNCl 1.840 1.954 0.114
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.297 0.257
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.098 -0.142
HSSSH trisulfane rHS 1.344 2.098 0.754
CaH Calcium monohydride rCaH 2.003 2.134 0.132
CaCl calcium monochloride rClCa 2.437 2.566 0.129
S4 Sulfur tetramer rSS 2.155 2.609 0.454
CaS Calcium sulfide rSCa 2.318 2.489 0.171
AlP Aluminum monophosphide rAlP 2.400 2.233 -0.167
AlP Aluminum monophosphide rAlP 2.220 2.094 -0.126
Mg2 Magnesium diatomic rMgMg 3.891 3.499 -0.392
Al2 Aluminum diatomic rAlAl 2.701 2.497 -0.204
CaC Calcium monocarbide rCCa 2.302 2.434 0.133
40 molecules.