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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 B97D3/daug-cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.243 3.158
C4H6 1-Methylcyclopropene rCH 1.087 3.435 2.348
C4H6 1-Methylcyclopropene rCC 1.476 2.275 0.799
S4 Sulfur tetramer rSS 2.155 2.934 0.779
CH3CH2SH ethanethiol rCH 1.095 1.857 0.762
CH3CH2SH ethanethiol rCH 1.095 1.852 0.757
C4H6 1-Methylcyclopropene rCH 1.087 1.842 0.755
C4H6 1-Methylcyclopropene rCH 1.098 1.794 0.696
C4H6 1-Methylcyclopropene rCH 1.098 1.773 0.675
S4 Sulfur tetramer rSS 2.155 2.635 0.480
C4H6 1-Methylcyclopropene rCH 1.070 1.514 0.444
CH3CH2SH ethanethiol rCH 1.089 1.529 0.440
CH3CH2SH ethanethiol rCH 1.089 1.528 0.439
CH3CH2SH ethanethiol rCH 1.092 1.529 0.437
CH3CH2SH ethanethiol rCH 1.092 1.528 0.436
C2H4F2 1,2-difluoroethane rCH 1.093 1.526 0.433
C2H4F2 1,2-difluoroethane rCH 1.093 1.511 0.418
C4H6 1-Methylcyclopropene rCC 1.515 1.103 -0.412
CH2CHCH2F Allyl Fluoride rHC 1.130 1.499 0.369
CH2CHCH2F Allyl Fluoride rHC 1.130 1.497 0.367
C3H3NO Isoxazole rCH 1.075 1.429 0.354
CH3CH2SH ethanethiol rCC 1.528 1.857 0.329
CH3CH2SH ethanethiol rCC 1.528 1.852 0.324
CH3CH2SH ethanethiol rCS 1.820 1.528 -0.292
CH3CH2SH ethanethiol rCS 1.820 1.529 -0.291
S4 Sulfur tetramer rSS 1.898 2.172 0.274
C2H2+ acetylene cation rCH 1.077 1.333 0.256
ONNO NO dimer rNN 2.236 1.989 -0.247
Si2H2 disilyne rSiSi 2.215 1.995 -0.221
Ar2 Argon diatomic rArAr 3.758 3.978 0.220
C4H6 1-Methylcyclopropene rCC 1.300 1.516 0.216
Si2H2 disilyne rSiH 1.668 1.475 -0.193
S4 Sulfur tetramer rSS 2.155 2.337 0.182
Si2H2 disilyne rSiH 1.668 1.511 -0.157
N2O4 Dinitrogen tetroxide rNN 1.782 1.901 0.119
N2 Nitrogen diatomic rNN 1.098 1.215 0.117
N2 Nitrogen diatomic rNN 1.098 1.215 0.117
N2 Nitrogen diatomic rNN 1.213 1.112 -0.101
N2 Nitrogen diatomic rNN 1.213 1.112 -0.101
N2 Nitrogen diatomic rNN 1.213 1.112 -0.101
N2 Nitrogen diatomic rNN 1.213 1.112 -0.101
GaAs Gallium arsenide rGaAs 2.530 2.628 0.098
GaAs Gallium arsenide rGaAs 2.530 2.621 0.091
Na2 Sodium diatomic rNaNa 3.079 3.170 0.091
NaLi lithium sodium rLiNa 2.889 2.978 0.089
AlBr Aluminum monobromide rAlBr 2.295 2.384 0.089
Si2H2 disilyne rSiH 1.668 1.756 0.088
Si2H2 disilyne rSiSi 2.215 2.128 -0.087
SF4 Sulfur tetrafluoride rSF 1.545 1.630 0.085
OClO Chlorine dioxide rClO 1.470 1.554 0.084
GaBr Gallium monobromide rGaBr 2.352 2.434 0.081
SF4 Sulfur tetrafluoride rSF 1.646 1.725 0.079
SiF2 Silicon difluoride rFSi 1.590 1.668 0.078
PF2 Phosphorus difluoride rPF 1.579 1.657 0.078
HSiCl Chlorosilylene rSiCl 2.067 2.144 0.077
GaCl Gallium monochloride rClGa 2.202 2.277 0.076
SF2 sulfur difluoride rSF 1.587 1.661 0.073
SiH2F2 difluorosilane rSiF 1.576 1.648 0.072
C2H2+ acetylene cation rCC 1.253 1.324 0.071
SF6 Sulfur Hexafluoride rSF 1.561 1.632 0.071
SiCl Clorosilylidyne rSiCl 2.061 2.132 0.071
C4H8O2 Ethyl acetate rCO 1.448 1.519 0.071
HSiBr monobromosilylene rSiBr 2.237 2.307 0.070
SiH3F monofluorosilane rSiF 1.595 1.665 0.070
SFCl Sulfur chloride fluoride rFS 1.606 1.676 0.070
Si2H2 disilyne rSiSi 2.215 2.146 -0.069
SiHF3 trifluorosilane rSiF 1.563 1.631 0.069
PF5 Phosphorus pentafluoride rPF 1.534 1.601 0.067
NH2SH Thiohydroxylamine rNS 1.705 1.772 0.067
NH2SH Thiohydroxylamine rNS 1.705 1.772 0.067
SO2 Sulfur dioxide rSO 1.432 1.498 0.066
SO3 Sulfur trioxide rSO 1.418 1.484 0.066
Cl2 Chlorine diatomic rClCl 1.988 2.054 0.066
GeCl Germanium monochloride rClGe 2.164 2.229 0.066
SiBr+ Silicon monobromide cation rSiBr 2.095 2.161 0.065
SiP Silicon monophosphide rSiP 2.078 2.013 -0.064
HOSH hydrogen thioperoxide rSO 1.662 1.725 0.064
SFCl Sulfur chloride fluoride rSCl 1.994 2.058 0.064
SSO Disulfur monoxide rSO 1.456 1.520 0.064
Cl2+ chlorine diatomic cation rClCl 1.892 1.955 0.064
SF Monosulfur monofluoride rSF 1.599 1.663 0.063
AlNC Aluminum isocyanide rAlN 1.855 1.918 0.063
AlF Aluminum monofluoride rAlF 1.654 1.717 0.063
Br2 Bromine diatomic rBrBr 2.281 2.344 0.063
ClNO Nitrosyl chloride rNCl 1.975 2.037 0.062
SO Sulfur monoxide rSO 1.481 1.543 0.062
SO Sulfur monoxide rSO 1.481 1.543 0.062
BrCl Bromine monochloride rClBr 2.136 2.198 0.061
FNO Nitrosyl fluoride rNF 1.512 1.573 0.061
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.099 0.061
SO Sulfur monoxide rSO 1.481 1.541 0.060
SO Sulfur monoxide rSO 1.481 1.541 0.060
SSO Disulfur monoxide rSS 1.884 1.944 0.060
CH3SOCH3 Dimethyl sulfoxide rSO 1.485 1.545 0.060
SiH3Cl chlorosilane rSiCl 2.051 2.110 0.059
GeF4 Germanium tetrafluoride rFGe 1.670 1.728 0.058
GeF Germanium monofluoride rFGe 1.745 1.803 0.057
HCO Formyl radical rCH 1.080 1.137 0.057
LiBr Lithium Bromide rLiBr 2.170 2.227 0.057
CH3CHClCH3 Propane, 2-chloro- rCCl 1.798 1.854 0.056
PF5 Phosphorus pentafluoride rFP 1.577 1.632 0.055
MgH magnesium monohydride rMgH 1.730 1.785 0.055
CH3SOCH3 Dimethyl sulfoxide rCS 1.799 1.854 0.055
CH2CHCH2F Allyl Fluoride rCF 1.370 1.425 0.055
CH2CHCH2F Allyl Fluoride rCF 1.370 1.425 0.055
NH2SH Thiohydroxylamine rNS 1.719 1.772 0.053
NH2SH Thiohydroxylamine rNS 1.719 1.772 0.053
GaF Gallium monofluoride rFGa 1.774 1.827 0.052
GeH3F monofluorogermane rGeF 1.731 1.783 0.052
HN3 hydrogen azide rNH 0.975 1.027 0.052
S2 Sulfur diatomic rSS 1.889 1.941 0.052
GeCl2 Germanium dichloride rClGe 2.186 2.237 0.051
LiCl lithium chloride rLiCl 2.021 2.072 0.051
113 molecules.