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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/daug-cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.251 3.166
C4H6 1-Methylcyclopropene rCH 1.087 3.442 2.355
C4H6 1-Methylcyclopropene rCC 1.476 2.281 0.805
C4H6 1-Methylcyclopropene rCH 1.087 1.848 0.761
S4 Sulfur tetramer rSS 2.155 2.913 0.758
CH3CH2SH ethanethiol rCH 1.095 1.852 0.757
CH3CH2SH ethanethiol rCH 1.095 1.848 0.753
C4H6 1-Methylcyclopropene rCH 1.098 1.799 0.701
C4H6 1-Methylcyclopropene rCH 1.098 1.776 0.678
C4H6 1-Methylcyclopropene rCH 1.070 1.520 0.450
CH3CH2SH ethanethiol rCH 1.089 1.528 0.439
CH3CH2SH ethanethiol rCH 1.089 1.526 0.437
CH3CH2SH ethanethiol rCH 1.092 1.528 0.436
CH3CH2SH ethanethiol rCH 1.092 1.526 0.434
S4 Sulfur tetramer rSS 2.155 2.589 0.434
C2H4F2 1,2-difluoroethane rCH 1.093 1.523 0.430
C2H4F2 1,2-difluoroethane rCH 1.093 1.508 0.415
C4H6 1-Methylcyclopropene rCC 1.515 1.106 -0.409
CH2CHCH2F Allyl Fluoride rHC 1.130 1.497 0.367
CH2CHCH2F Allyl Fluoride rHC 1.130 1.495 0.365
C3H3NO Isoxazole rCH 1.075 1.428 0.353
CH3CH2SH ethanethiol rCC 1.528 1.852 0.324
CH3CH2SH ethanethiol rCC 1.528 1.848 0.320
ONNO NO dimer rNN 2.236 1.934 -0.302
CH3CH2SH ethanethiol rCS 1.820 1.526 -0.294
CH3CH2SH ethanethiol rCS 1.820 1.528 -0.292
S4 Sulfur tetramer rSS 1.898 2.163 0.265
C2H2+ acetylene cation rCH 1.077 1.337 0.260
C4H6 1-Methylcyclopropene rCC 1.300 1.520 0.220
Ar2 Argon diatomic rArAr 3.758 3.976 0.218
Si2H2 disilyne rSiSi 2.215 1.999 -0.217
N2 Nitrogen diatomic rNN 1.098 1.297 0.200
N2 Nitrogen diatomic rNN 1.098 1.297 0.200
Si2H2 disilyne rSiH 1.668 1.482 -0.186
Si2H2 disilyne rSiH 1.668 1.517 -0.151
S4 Sulfur tetramer rSS 2.155 2.301 0.146
N2 Nitrogen diatomic rNN 1.213 1.115 -0.097
N2 Nitrogen diatomic rNN 1.213 1.115 -0.097
N2 Nitrogen diatomic rNN 1.213 1.115 -0.097
N2 Nitrogen diatomic rNN 1.213 1.115 -0.097
Si2H2 disilyne rSiSi 2.215 2.121 -0.094
SF4 Sulfur tetrafluoride rSF 1.545 1.634 0.089
OClO Chlorine dioxide rClO 1.470 1.557 0.087
N2 Nitrogen diatomic rNN 1.213 1.297 0.085
N2 Nitrogen diatomic rNN 1.213 1.297 0.085
Si2H2 disilyne rSiH 1.668 1.750 0.082
SiF2 Silicon difluoride rFSi 1.590 1.671 0.081
PF2 Phosphorus difluoride rPF 1.579 1.660 0.080
SF4 Sulfur tetrafluoride rSF 1.646 1.725 0.079
AlBr Aluminum monobromide rAlBr 2.295 2.373 0.078
N2O4 Dinitrogen tetroxide rNN 1.782 1.858 0.076
SF2 sulfur difluoride rSF 1.587 1.663 0.075
SiH2F2 difluorosilane rSiF 1.576 1.651 0.075
SF6 Sulfur Hexafluoride rSF 1.561 1.635 0.074
SiH3F monofluorosilane rSiF 1.595 1.668 0.074
SFCl Sulfur chloride fluoride rFS 1.606 1.679 0.073
PF5 Phosphorus pentafluoride rPF 1.534 1.606 0.072
SiHF3 trifluorosilane rSiF 1.563 1.634 0.072
C2H2+ acetylene cation rCC 1.253 1.324 0.071
SO3 Sulfur trioxide rSO 1.418 1.488 0.071
SO2 Sulfur dioxide rSO 1.432 1.503 0.071
Si2H2 disilyne rSiSi 2.215 2.145 -0.070
C4H8O2 Ethyl acetate rCO 1.448 1.517 0.069
GaAs Gallium arsenide rGaAs 2.530 2.599 0.069
SSO Disulfur monoxide rSO 1.456 1.524 0.067
HSiCl Chlorosilylene rSiCl 2.067 2.134 0.067
SiP Silicon monophosphide rSiP 2.078 2.012 -0.065
GaBr Gallium monobromide rGaBr 2.352 2.417 0.065
GeF4 Germanium tetrafluoride rFGe 1.670 1.735 0.065
SF Monosulfur monofluoride rSF 1.599 1.664 0.064
GaCl Gallium monochloride rClGa 2.202 2.266 0.064
SO Sulfur monoxide rSO 1.481 1.545 0.064
SO Sulfur monoxide rSO 1.481 1.545 0.064
SSO Disulfur monoxide rSS 1.884 1.948 0.063
AlF Aluminum monofluoride rAlF 1.654 1.718 0.063
CH3SOCH3 Dimethyl sulfoxide rSO 1.485 1.548 0.063
SiCl Clorosilylidyne rSiCl 2.061 2.124 0.063
AlNC Aluminum isocyanide rAlN 1.855 1.918 0.063
HOSH hydrogen thioperoxide rSO 1.662 1.724 0.063
HCO Formyl radical rCH 1.080 1.142 0.062
SO Sulfur monoxide rSO 1.481 1.543 0.062
SO Sulfur monoxide rSO 1.481 1.543 0.062
NH2SH Thiohydroxylamine rNS 1.705 1.766 0.061
NH2SH Thiohydroxylamine rNS 1.705 1.766 0.061
SiBr+ Silicon monobromide cation rSiBr 2.095 2.157 0.061
Cl2+ chlorine diatomic cation rClCl 1.892 1.952 0.061
GeF Germanium monofluoride rFGe 1.745 1.805 0.059
PF5 Phosphorus pentafluoride rFP 1.577 1.636 0.059
GeH3F monofluorogermane rGeF 1.731 1.788 0.057
SFCl Sulfur chloride fluoride rSCl 1.994 2.051 0.057
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.095 0.057
GeCl Germanium monochloride rClGe 2.164 2.220 0.056
HN3 hydrogen azide rNH 0.975 1.031 0.056
HSiBr monobromosilylene rSiBr 2.237 2.293 0.056
Cl2 Chlorine diatomic rClCl 1.988 2.044 0.056
GaF Gallium monofluoride rFGa 1.774 1.829 0.055
SiH3Cl chlorosilane rSiCl 2.051 2.105 0.054
CH2CHCH2F Allyl Fluoride rCF 1.370 1.424 0.054
CH2CHCH2F Allyl Fluoride rCF 1.370 1.424 0.054
SiO Silicon monoxide rSiO 1.510 1.563 0.053
S2 Sulfur diatomic rSS 1.889 1.942 0.052
S3 Sulfur trimer rSS 1.917 1.969 0.052
CH3SOCH3 Dimethyl sulfoxide rCS 1.799 1.850 0.051
103 molecules.