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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 B3LYPultrafine/cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.235 3.150
C4H6 1-Methylcyclopropene rCH 1.087 3.434 2.347
Ar2 Argon diatomic rArAr 3.758 5.360 1.602
C4H6 1-Methylcyclopropene rCC 1.476 2.274 0.798
S4 Sulfur tetramer rSS 2.155 2.935 0.780
HSSSH trisulfane rHS 1.344 2.107 0.763
HSSSH trisulfane rHS 1.344 2.107 0.763
CH3CH2SH ethanethiol rCH 1.095 1.852 0.757
C4H6 1-Methylcyclopropene rCH 1.087 1.841 0.754
CH3CH2SH ethanethiol rCH 1.095 1.847 0.752
C4H6 1-Methylcyclopropene rCH 1.098 1.791 0.693
C4H6 1-Methylcyclopropene rCH 1.098 1.770 0.672
CH3SO2NH2 methanesulfonamide rCN 1.207 1.718 0.512
S4 Sulfur tetramer rSS 2.155 2.605 0.450
Be2 Beryllium diatomic rBeBe 2.460 2.014 -0.446
C4H6 1-Methylcyclopropene rCH 1.070 1.515 0.445
CH3CH2SH ethanethiol rCH 1.089 1.526 0.437
CH3CH2SH ethanethiol rCH 1.089 1.526 0.437
CH3CH2SH ethanethiol rCH 1.092 1.526 0.434
CH3CH2SH ethanethiol rCH 1.092 1.526 0.434
C4H10O Methyl propyl ether rCC 1.530 1.104 -0.426
C2H4F2 1,2-difluoroethane rCH 1.093 1.519 0.426
C2H4F2 1,2-difluoroethane rCH 1.093 1.507 0.414
C4H6 1-Methylcyclopropene rCC 1.515 1.103 -0.412
CH2CHCH2F Allyl Fluoride rHC 1.130 1.498 0.368
CH2CHCH2F Allyl Fluoride rHC 1.130 1.496 0.366
ONNO NO dimer rNN 2.236 1.882 -0.354
C3H3NO Isoxazole rCH 1.075 1.427 0.352
GaP Gallium monophosphide rPGa 2.450 2.115 -0.335
GaP Gallium monophosphide rPGa 2.450 2.115 -0.335
GaP Gallium monophosphide rPGa 2.450 2.115 -0.335
GaP Gallium monophosphide rPGa 2.450 2.115 -0.335
CH3CH2SH ethanethiol rCC 1.528 1.852 0.324
CH3CH2SH ethanethiol rCC 1.528 1.847 0.319
C4H10O Methyl propyl ether rCH 1.099 1.408 0.309
CH3CH2SH ethanethiol rCS 1.820 1.526 -0.294
CH3CH2SH ethanethiol rCS 1.820 1.526 -0.294
AlP Aluminum monophosphide rAlP 2.400 2.107 -0.293
AlP Aluminum monophosphide rAlP 2.400 2.107 -0.293
AlP Aluminum monophosphide rAlP 2.400 2.107 -0.293
Ar2+ Argon diatomic cation rArAr 2.320 2.613 0.293
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.321 0.281
S4 Sulfur tetramer rSS 1.898 2.168 0.270
C2H2+ acetylene cation rCH 1.077 1.333 0.257
Si2H2 disilyne rSiSi 2.215 1.980 -0.235
C4H6 1-Methylcyclopropene rCC 1.300 1.514 0.214
S3 Sulfur trimer rSS 1.917 2.127 0.210
Si2H2 disilyne rSiH 1.668 1.470 -0.198
ClF3 Chlorine trifluoride rFCl 1.597 1.779 0.182
ClF3 Chlorine trifluoride rFCl 1.597 1.779 0.182
GaP Gallium monophosphide rPGa 2.450 2.272 -0.178
GaP Gallium monophosphide rPGa 2.450 2.272 -0.178
GaP Gallium monophosphide rPGa 2.450 2.272 -0.178
GaP Gallium monophosphide rPGa 2.450 2.272 -0.178
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.525 0.166
Si2H2 disilyne rSiH 1.668 1.505 -0.163
GaP Gallium monophosphide rPGa 2.110 2.272 0.162
GaP Gallium monophosphide rPGa 2.110 2.272 0.162
GaP Gallium monophosphide rPGa 2.110 2.272 0.162
GaP Gallium monophosphide rPGa 2.110 2.272 0.162
AlP Aluminum monophosphide rAlP 2.400 2.245 -0.155
AlP Aluminum monophosphide rAlP 2.400 2.245 -0.155
AlP Aluminum monophosphide rAlP 2.400 2.245 -0.155
AlP Aluminum monophosphide rAlP 2.400 2.245 -0.155
AlP Aluminum monophosphide rAlP 2.400 2.245 -0.155
AlP Aluminum monophosphide rAlP 2.400 2.245 -0.155
AlP Aluminum monophosphide rAlP 2.260 2.107 -0.153
AlP Aluminum monophosphide rAlP 2.260 2.107 -0.153
AlP Aluminum monophosphide rAlP 2.260 2.107 -0.153
ClOOCl Dichlorine dioxide rOCl 1.704 1.848 0.143
GaP Gallium monophosphide rPGa 2.250 2.115 -0.135
GaP Gallium monophosphide rPGa 2.250 2.115 -0.135
GaP Gallium monophosphide rPGa 2.250 2.115 -0.135
GaP Gallium monophosphide rPGa 2.250 2.115 -0.135
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.112 -0.128
ClOOCl Dichlorine dioxide rOO 1.426 1.300 -0.126
GaP Gallium monophosphide rPGa 2.240 2.115 -0.125
GaP Gallium monophosphide rPGa 2.240 2.115 -0.125
GaP Gallium monophosphide rPGa 2.240 2.115 -0.125
GaP Gallium monophosphide rPGa 2.240 2.115 -0.125
N2 Nitrogen diatomic rNN 1.098 1.211 0.113
N2 Nitrogen diatomic rNN 1.098 1.211 0.113
AlP Aluminum monophosphide rAlP 2.220 2.107 -0.113
AlP Aluminum monophosphide rAlP 2.220 2.107 -0.113
AlP Aluminum monophosphide rAlP 2.220 2.107 -0.113
N2 Nitrogen diatomic rNN 1.213 1.104 -0.108
N2 Nitrogen diatomic rNN 1.213 1.104 -0.108
N2 Nitrogen diatomic rNN 1.213 1.104 -0.108
N2 Nitrogen diatomic rNN 1.213 1.104 -0.108
N2 Nitrogen diatomic rNN 1.213 1.104 -0.108
N2 Nitrogen diatomic rNN 1.213 1.104 -0.108
Si2H2 disilyne rSiSi 2.215 2.115 -0.100
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.702 0.099
Si2H2 disilyne rSiSi 2.215 2.132 -0.083
ClF3 Chlorine trifluoride rFCl 1.697 1.779 0.082
ClF3 Chlorine trifluoride rFCl 1.697 1.779 0.082
Si2H2 disilyne rSiH 1.668 1.749 0.081
FSN Thiazyl fluoride rFS 1.643 1.723 0.080
SF5Cl sulfur chloropentafluoride rSCl 2.030 2.109 0.079
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.615 0.076
C2 Carbon diatomic rCC 1.243 1.316 0.074
ClF3 Chlorine trifluoride rFCl 1.597 1.669 0.073
ClF3 Chlorine trifluoride rFCl 1.597 1.669 0.073
OPCl Phosphorus oxychloride rPCl 2.059 2.131 0.072
SiF3 Silicon trifluoride radical rFSi 1.565 1.637 0.072
F2SO Thionyl Fluoride rFS 1.585 1.657 0.072
S4 Sulfur tetramer rSS 2.155 2.226 0.071
CFCl chlorofluoromethylene rCCl 1.714 1.785 0.071
Ne2+ Neon diatomic cation rNeNe 1.765 1.836 0.071
SiF+ silicon monofluoride cation rFSi 1.527 1.597 0.071
OClO Chlorine dioxide rClO 1.470 1.540 0.070
GaAs Gallium arsenide rGaAs 2.530 2.600 0.070
GaAs Gallium arsenide rGaAs 2.530 2.600 0.070
SF4 Sulfur tetrafluoride rSF 1.545 1.613 0.068
SiBr Silicon monobromide rSiBr 2.209 2.277 0.068
AlBr Aluminum monobromide rAlBr 2.295 2.363 0.068
C4H8O2 Ethyl acetate rCO 1.448 1.515 0.067
AlCl Aluminum monochloride rAlCl 2.130 2.197 0.067
SeO3 selenium trioxide rSeO 1.688 1.622 -0.065
SiF2 Silicon difluoride rFSi 1.590 1.655 0.065
SFCl Sulfur chloride fluoride rSCl 1.994 2.058 0.064
He2+ helium diatomic cation rHeHe 1.081 1.145 0.064
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.101 0.063
B2 Boron diatomic rBB 1.590 1.653 0.063
SiC silicon monocarbide rCSi 1.722 1.659 -0.063
SiH2F2 difluorosilane rSiF 1.576 1.638 0.062
SiHF3 trifluorosilane rSiF 1.563 1.625 0.062
HSiCl Chlorosilylene rSiCl 2.067 2.128 0.061
SiF silicon monofluoride rSiF 1.604 1.665 0.061
SCl2 Sulfur dichloride rSCl 2.013 2.073 0.060
Cl2 Chlorine diatomic rClCl 1.988 2.048 0.060
HCO Formyl radical rCH 1.080 1.140 0.060
GaBr Gallium monobromide rGaBr 2.352 2.412 0.059
C2H2+ acetylene cation rCC 1.253 1.312 0.059
PF2 Phosphorus difluoride rPF 1.579 1.638 0.059
PF5 Phosphorus pentafluoride rPF 1.534 1.593 0.059
BeCl2 Beryllium chloride rBeCl 1.750 1.809 0.059
SiCl Clorosilylidyne rSiCl 2.061 2.120 0.059
B4H10 Tetraborane(10) rHB 1.484 1.425 -0.059
GaAs Gallium arsenide rGaAs 2.530 2.588 0.058
GaAs Gallium arsenide rGaAs 2.530 2.588 0.058
SF2 sulfur difluoride rSF 1.587 1.645 0.058
B2 Boron diatomic rBB 1.590 1.532 -0.058
SeF4 Selenium tetrafluoride rFSe 1.682 1.739 0.057
SiH3F monofluorosilane rSiF 1.595 1.652 0.057
GaCl Gallium monochloride rClGa 2.202 2.258 0.057
GaCl Gallium monochloride rClGa 2.202 2.258 0.057
ClOF3 Chlorine trifluoride oxide rOCl 1.405 1.461 0.056
SiCl3CH3 methyltrichlorosilane rSiCl 2.026 2.082 0.056
SCl sulfur monochloride rSCl 1.975 2.031 0.056
SCl sulfur monochloride rSCl 1.975 2.031 0.056
BrCl Bromine monochloride rClBr 2.136 2.192 0.056
C2H6O2S Dimethyl sulfone rSO 1.431 1.486 0.055
CH2BrF Methane, bromofluoro- rCBr 1.915 1.970 0.055
SOF4 Sulfur tetrafluoride oxide rFS 1.596 1.651 0.055
ClF3 Chlorine trifluoride rFCl 1.697 1.751 0.055
ClF3 Chlorine trifluoride rFCl 1.697 1.751 0.055
SF6 Sulfur Hexafluoride rSF 1.561 1.616 0.055
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.768 0.055
GeCl Germanium monochloride rClGe 2.164 2.218 0.054
PBr3 Phosphorus tribromide rPBr 2.220 2.274 0.054
NH2SH Thiohydroxylamine rNS 1.705 1.759 0.054
NH2SH Thiohydroxylamine rNS 1.705 1.759 0.054
BrO Bromine monoxide rOBr 1.718 1.772 0.054
HSSSH trisulfane rSS 2.053 2.107 0.054
HSSSH trisulfane rSS 2.053 2.107 0.054
Cl2+ chlorine diatomic cation rClCl 1.892 1.945 0.054
BrO Bromine monoxide rOBr 1.718 1.771 0.053
Br2 Bromine diatomic rBrBr 2.281 2.334 0.053
NCl nitrogen monochloride rNCl 1.611 1.664 0.053
GeF4 Germanium tetrafluoride rFGe 1.670 1.723 0.053
CH2ClCCCl 1,3-dichloropropyne rCCl 1.779 1.832 0.053
AlF Aluminum monofluoride rAlF 1.654 1.707 0.053
NBr nitrogen monobromide rNBr 1.765 1.818 0.053
HSSSH trisulfane rSS 2.054 2.107 0.053
HSSSH trisulfane rSS 2.054 2.107 0.053
BN boron nitride rBN 1.325 1.272 -0.053
HN3 hydrogen azide rNH 0.975 1.027 0.052
SSO Disulfur monoxide rSS 1.884 1.937 0.052
HSiBr monobromosilylene rSiBr 2.237 2.289 0.052
SiBr4 Silicon tetrabromide rSiBr 2.183 2.235 0.052
SiH2Cl2 dichlorosilane rSiCl 2.033 2.085 0.052
NCl3 nitrogen trichloride rNCl 1.754 1.806 0.052
SFCl Sulfur chloride fluoride rFS 1.606 1.658 0.052
SF5Cl sulfur chloropentafluoride rFS 1.576 1.628 0.052
CH3CHNOH Acetaldoxime rCC 1.550 1.498 -0.052
H2S2 Disulfane rSS 2.056 2.108 0.051
ClF Chlorine monofluoride rFCl 1.628 1.679 0.051
SiBr+ Silicon monobromide cation rSiBr 2.095 2.146 0.051
SO3 Sulfur trioxide rSO 1.418 1.468 0.050
190 molecules.