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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/cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.252 3.167
C4H6 1-Methylcyclopropene rCH 1.087 3.434 2.347
C4H6 1-Methylcyclopropene rCC 1.476 2.277 0.801
S4 Sulfur tetramer rSS 2.155 2.942 0.787
C4H6 1-Methylcyclopropene rCH 1.087 1.848 0.761
CH3CH2SH ethanethiol rCH 1.095 1.854 0.759
CH3CH2SH ethanethiol rCH 1.095 1.849 0.754
C4H6 1-Methylcyclopropene rCH 1.098 1.797 0.699
C4H6 1-Methylcyclopropene rCH 1.098 1.774 0.676
CH3SO2NH2 methanesulfonamide rCN 1.207 1.743 0.537
S4 Sulfur tetramer rSS 2.155 2.648 0.493
C4H6 1-Methylcyclopropene rCH 1.070 1.513 0.443
CH3CH2SH ethanethiol rCH 1.089 1.528 0.439
CH3CH2SH ethanethiol rCH 1.089 1.527 0.438
CH3CH2SH ethanethiol rCH 1.092 1.528 0.436
CH3CH2SH ethanethiol rCH 1.092 1.527 0.435
C2H4F2 1,2-difluoroethane rCH 1.093 1.525 0.432
C4H10O Methyl propyl ether rCC 1.530 1.107 -0.423
C2H4F2 1,2-difluoroethane rCH 1.093 1.513 0.420
C4H6 1-Methylcyclopropene rCC 1.515 1.107 -0.408
CH2CHCH2F Allyl Fluoride rHC 1.130 1.500 0.370
CH2CHCH2F Allyl Fluoride rHC 1.130 1.499 0.369
C3H3NO Isoxazole rCH 1.075 1.428 0.353
S4 Sulfur tetramer rSS 2.155 2.488 0.333
CH3CH2SH ethanethiol rCC 1.528 1.854 0.326
CH3CH2SH ethanethiol rCC 1.528 1.849 0.321
C4H10O Methyl propyl ether rCH 1.099 1.414 0.315
CH3CH2SH ethanethiol rCS 1.820 1.527 -0.293
CH3CH2SH ethanethiol rCS 1.820 1.528 -0.292
S4 Sulfur tetramer rSS 1.898 2.176 0.278
C2H2+ acetylene cation rCH 1.077 1.333 0.256
Si2H2 disilyne rSiSi 2.215 1.994 -0.222
C4H6 1-Methylcyclopropene rCC 1.300 1.513 0.213
S3 Sulfur trimer rSS 1.917 2.127 0.210
ONNO NO dimer rNN 2.236 2.031 -0.205
Si2H2 disilyne rSiH 1.668 1.477 -0.191
Si2H2 disilyne rSiH 1.668 1.514 -0.154
Ar2 Argon diatomic rArAr 3.758 3.896 0.138
N2 Nitrogen diatomic rNN 1.098 1.215 0.117
N2 Nitrogen diatomic rNN 1.098 1.215 0.117
N2O4 Dinitrogen tetroxide rNN 1.782 1.891 0.109
He2+ helium diatomic cation rHeHe 1.081 1.187 0.107
FSN Thiazyl fluoride rFS 1.643 1.749 0.106
N2 Nitrogen diatomic rNN 1.213 1.112 -0.100
N2 Nitrogen diatomic rNN 1.213 1.112 -0.100
N2 Nitrogen diatomic rNN 1.213 1.112 -0.100
N2 Nitrogen diatomic rNN 1.213 1.112 -0.100
GaAs Gallium arsenide rGaAs 2.530 2.628 0.098
Na2 Sodium diatomic rNaNa 3.079 3.172 0.093
Si2H2 disilyne rSiH 1.668 1.759 0.091
NaLi lithium sodium rLiNa 2.889 2.980 0.091
CFCl chlorofluoromethylene rCCl 1.714 1.804 0.090
Si2H2 disilyne rSiSi 2.215 2.128 -0.088
OPCl Phosphorus oxychloride rPCl 2.059 2.146 0.087
SF4 Sulfur tetrafluoride rSF 1.545 1.632 0.087
OClO Chlorine dioxide rClO 1.470 1.554 0.085
GaAs Gallium arsenide rGaAs 2.530 2.613 0.083
ClNO Nitrosyl chloride rNCl 1.975 2.056 0.081
NCl3 nitrogen trichloride rNCl 1.754 1.833 0.080
SiF2 Silicon difluoride rFSi 1.590 1.668 0.078
AlBr Aluminum monobromide rAlBr 2.295 2.373 0.078
SiBr Silicon monobromide rSiBr 2.209 2.286 0.077
SeF4 Selenium tetrafluoride rFSe 1.682 1.757 0.075
SiH2F2 difluorosilane rSiF 1.576 1.649 0.073
SiHF3 trifluorosilane rSiF 1.563 1.636 0.073
PF5 Phosphorus pentafluoride rPF 1.534 1.606 0.072
PF2 Phosphorus difluoride rPF 1.579 1.651 0.072
HSiCl Chlorosilylene rSiCl 2.067 2.138 0.071
C2H2+ acetylene cation rCC 1.253 1.324 0.071
SF6 Sulfur Hexafluoride rSF 1.561 1.631 0.070
SF2 sulfur difluoride rSF 1.587 1.657 0.070
SFCl Sulfur chloride fluoride rSCl 1.994 2.064 0.070
GaBr Gallium monobromide rGaBr 2.352 2.422 0.070
C4H8O2 Ethyl acetate rCO 1.448 1.518 0.070
Si2H2 disilyne rSiSi 2.215 2.146 -0.069
CH2BrF Methane, bromofluoro- rCBr 1.915 1.984 0.069
NH2SH Thiohydroxylamine rNS 1.705 1.774 0.069
NH2SH Thiohydroxylamine rNS 1.705 1.774 0.069
SiH3F monofluorosilane rSiF 1.595 1.662 0.068
AlF Aluminum monofluoride rAlF 1.654 1.722 0.067
SiCl Clorosilylidyne rSiCl 2.061 2.129 0.067
SF4 Sulfur tetrafluoride rSF 1.646 1.712 0.066
SiP Silicon monophosphide rSiP 2.078 2.012 -0.066
GaCl Gallium monochloride rClGa 2.202 2.267 0.066
CH2ClCCCl 1,3-dichloropropyne rCCl 1.779 1.843 0.065
SO2 Sulfur dioxide rSO 1.432 1.497 0.064
LiCl lithium chloride rLiCl 2.021 2.085 0.064
SO3 Sulfur trioxide rSO 1.418 1.482 0.064
HCO Formyl radical rCH 1.080 1.144 0.064
BrCl Bromine monochloride rClBr 2.136 2.200 0.064
SO Sulfur monoxide rSO 1.481 1.545 0.064
SO Sulfur monoxide rSO 1.481 1.545 0.064
C2H6O2S Dimethyl sulfone rSO 1.431 1.495 0.064
HSiBr monobromosilylene rSiBr 2.237 2.301 0.064
SFCl Sulfur chloride fluoride rFS 1.606 1.670 0.064
SO Sulfur monoxide rSO 1.481 1.544 0.063
SO Sulfur monoxide rSO 1.481 1.544 0.063
GeF4 Germanium tetrafluoride rFGe 1.670 1.733 0.063
Cl2+ chlorine diatomic cation rClCl 1.892 1.954 0.063
SSO Disulfur monoxide rSS 1.884 1.947 0.063
SiBr+ Silicon monobromide cation rSiBr 2.095 2.157 0.062
Br2 Bromine diatomic rBrBr 2.281 2.342 0.061
ClF Chlorine monofluoride rFCl 1.628 1.689 0.061
SSO Disulfur monoxide rSO 1.456 1.517 0.061
SF Monosulfur monofluoride rSF 1.599 1.661 0.061
GeCl Germanium monochloride rClGe 2.164 2.225 0.061
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.098 0.060
CH3SOCH3 Dimethyl sulfoxide rCS 1.799 1.858 0.059
LiBr Lithium Bromide rLiBr 2.170 2.229 0.059
HOSH hydrogen thioperoxide rSO 1.662 1.720 0.059
SiBr4 Silicon tetrabromide rSiBr 2.183 2.242 0.059
GeF+ Germanium monofluoride cation rFGe 1.665 1.724 0.059
S2N2 Disulfur dinitride rNS 1.642 1.699 0.057
MgH magnesium monohydride rMgH 1.730 1.786 0.057
BrF Bromine monofluoride rFBr 1.759 1.815 0.056
SiH3Br bromosilane rSiBr 2.210 2.266 0.056
BrO Bromine monoxide rOBr 1.718 1.774 0.056
ZnCN Zinc monocyanide rCZn 1.950 2.006 0.056
HN3 hydrogen azide rNH 0.975 1.031 0.056
PF5 Phosphorus pentafluoride rFP 1.577 1.633 0.056
NCl nitrogen monochloride rNCl 1.611 1.666 0.055
AlNC Aluminum isocyanide rAlN 1.855 1.910 0.055
SiH3Cl chlorosilane rSiCl 2.051 2.106 0.055
CHFClBr fluorochlorobromomethane rCBr 1.928 1.983 0.055
NH2SH Thiohydroxylamine rNS 1.719 1.774 0.055
NH2SH Thiohydroxylamine rNS 1.719 1.774 0.055
NHCl2 dichloroamine rNCl 1.760 1.813 0.053
CHFClBr fluorochlorobromomethane rCBr 1.928 1.981 0.053
CH3CHClCH3 Propane, 2-chloro- rCCl 1.798 1.851 0.053
FNO2 Nitryl fluoride rNF 1.467 1.520 0.053
CF2Cl2 difluorodichloromethane rCCl 1.744 1.797 0.053
PO Phosphorus monoxide rPO 1.476 1.528 0.052
GeBr4 Germanium tetrabromide rGeBr 2.272 2.324 0.052
Li2O dilithium oxide rLiO 1.606 1.658 0.052
HOCl hypochlorous acid rClO 1.697 1.749 0.051
S2 Sulfur diatomic rSS 1.889 1.940 0.051
CH3SOCH3 Dimethyl sulfoxide rSO 1.485 1.535 0.050
CF3Br Bromotrifluoromethane rCBr 1.923 1.973 0.050
138 molecules.