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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 wB97X-D/cc-pVQZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.188 3.103
C4H6 1-Methylcyclopropene rCH 1.087 3.407 2.320
C4H6 1-Methylcyclopropene rCC 1.476 2.252 0.776
C4H6 1-Methylcyclopropene rCH 1.087 1.824 0.737
CH3CH2SH ethanethiol rCH 1.095 1.823 0.728
CH3CH2SH ethanethiol rCH 1.095 1.819 0.724
S4 Sulfur tetramer rSS 2.155 2.849 0.694
C4H6 1-Methylcyclopropene rCH 1.098 1.773 0.675
C4H6 1-Methylcyclopropene rCH 1.098 1.755 0.657
ONNO NO dimer rNN 2.236 1.729 -0.507
C4H6 1-Methylcyclopropene rCH 1.070 1.504 0.434
CH3CH2SH ethanethiol rCH 1.089 1.520 0.431
CH3CH2SH ethanethiol rCH 1.089 1.518 0.429
CH3CH2SH ethanethiol rCH 1.092 1.520 0.428
C4H6 1-Methylcyclopropene rCC 1.515 1.089 -0.426
CH3CH2SH ethanethiol rCH 1.092 1.518 0.426
C2H4F2 1,2-difluoroethane rCH 1.093 1.515 0.422
C2H4F2 1,2-difluoroethane rCH 1.093 1.502 0.409
GaP Gallium monophosphide rPGa 2.450 2.085 -0.365
GaP Gallium monophosphide rPGa 2.450 2.085 -0.365
GaP Gallium monophosphide rPGa 2.450 2.085 -0.365
GaP Gallium monophosphide rPGa 2.450 2.085 -0.365
CH2CHCH2F Allyl Fluoride rHC 1.130 1.492 0.362
CH2CHCH2F Allyl Fluoride rHC 1.130 1.491 0.361
Ar2 Argon diatomic rArAr 3.758 4.118 0.360
C3H3NO Isoxazole rCH 1.075 1.417 0.342
S4 Sulfur tetramer rSS 2.155 2.473 0.318
CH3CH2SH ethanethiol rCS 1.820 1.518 -0.302
CH3CH2SH ethanethiol rCS 1.820 1.520 -0.300
CH3CH2SH ethanethiol rCC 1.528 1.823 0.295
CH3CH2SH ethanethiol rCC 1.528 1.819 0.291
CaC Calcium monocarbide rCCa 2.302 2.019 -0.282
Si2H2 disilyne rSiSi 2.215 1.951 -0.264
C2H2+ acetylene cation rCH 1.077 1.320 0.243
Si2H2 disilyne rSiH 1.668 1.458 -0.210
S4 Sulfur tetramer rSS 1.898 2.106 0.208
C4H6 1-Methylcyclopropene rCC 1.300 1.505 0.205
GaP Gallium monophosphide rPGa 2.450 2.245 -0.205
GaP Gallium monophosphide rPGa 2.450 2.245 -0.205
GaP Gallium monophosphide rPGa 2.450 2.245 -0.205
GaP Gallium monophosphide rPGa 2.450 2.245 -0.205
Si2H2 disilyne rSiH 1.668 1.487 -0.181
GaP Gallium monophosphide rPGa 2.250 2.085 -0.165
GaP Gallium monophosphide rPGa 2.250 2.085 -0.165
GaP Gallium monophosphide rPGa 2.250 2.085 -0.165
GaP Gallium monophosphide rPGa 2.250 2.085 -0.165
S3 Sulfur trimer rSS 1.917 2.078 0.161
Ar2+ Argon diatomic cation rArAr 2.320 2.480 0.160
GaP Gallium monophosphide rPGa 2.240 2.085 -0.155
GaP Gallium monophosphide rPGa 2.240 2.085 -0.155
GaP Gallium monophosphide rPGa 2.240 2.085 -0.155
GaP Gallium monophosphide rPGa 2.240 2.085 -0.155
Si2H2 disilyne rSiSi 2.215 2.074 -0.142
GaP Gallium monophosphide rPGa 2.110 2.245 0.135
GaP Gallium monophosphide rPGa 2.110 2.245 0.135
GaP Gallium monophosphide rPGa 2.110 2.245 0.135
GaP Gallium monophosphide rPGa 2.110 2.245 0.135
Si2H2 disilyne rSiSi 2.215 2.089 -0.126
N2 Nitrogen diatomic rNN 1.213 1.087 -0.125
N2 Nitrogen diatomic rNN 1.213 1.087 -0.125
N2 Nitrogen diatomic rNN 1.213 1.087 -0.125
N2 Nitrogen diatomic rNN 1.213 1.087 -0.125
SiP Silicon monophosphide rSiP 2.078 1.966 -0.111
S4 Sulfur tetramer rSS 2.155 2.054 -0.101
N2 Nitrogen diatomic rNN 1.098 1.197 0.100
N2 Nitrogen diatomic rNN 1.098 1.197 0.100
C4H8O2 Ethyl acetate rCO 1.448 1.509 0.061
N2O4 Dinitrogen tetroxide rNN 1.782 1.725 -0.057
He2+ helium diatomic cation rHeHe 1.081 1.137 0.057
C3H3NO Isoxazole rCC 1.356 1.300 -0.056
H2O2 Hydrogen peroxide rOO 1.475 1.424 -0.051
H2O2 Hydrogen peroxide rOO 1.475 1.424 -0.051
F2+ flourine diatomic cation rFF 1.322 1.272 -0.050
73 molecules.