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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 MP3=FULL/6-31G

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
S4 Sulfur tetramer rSS 2.155 3.214 1.059
CH3CH2SH ethanethiol rCH 1.095 1.915 0.820
Ar2 Argon diatomic rArAr 3.758 4.414 0.656
S4 Sulfur tetramer rSS 2.155 2.770 0.615
CH3SO2NH2 methanesulfonamide rCN 1.207 1.790 0.583
S4 Sulfur tetramer rSS 1.898 2.376 0.478
CH3CH2SH ethanethiol rCH 1.089 1.537 0.448
CH3CH2SH ethanethiol rCH 1.092 1.537 0.445
S3 Sulfur trimer rSS 1.917 2.353 0.436
C2H4F2 1,2-difluoroethane rCH 1.093 1.526 0.433
C4H10O Methyl propyl ether rCC 1.530 1.101 -0.429
CaS Calcium sulfide rSCa 2.318 2.709 0.391
CH3CH2SH ethanethiol rCC 1.528 1.915 0.387
CH2CHCH2F Allyl Fluoride rHC 1.130 1.512 0.382
C4H10O Methyl propyl ether rCH 1.099 1.457 0.358
ClF3 Chlorine trifluoride rFCl 1.597 1.930 0.333
ClF3 Chlorine trifluoride rFCl 1.597 1.930 0.333
GaP Gallium monophosphide rPGa 2.450 2.130 -0.320
GaP Gallium monophosphide rPGa 2.450 2.130 -0.320
GaP Gallium monophosphide rPGa 2.450 2.130 -0.320
GaP Gallium monophosphide rPGa 2.450 2.130 -0.320
Ar2+ Argon diatomic cation rArAr 2.320 2.620 0.300
CaO Calcium monoxide rOCa 1.822 2.122 0.300
Cl2+ chlorine diatomic cation rClCl 1.892 2.183 0.291
CH3CH2SH ethanethiol rCS 1.820 1.537 -0.283
C2H2+ acetylene cation rCH 1.077 1.353 0.276
SFCl Sulfur chloride fluoride rSCl 1.994 2.248 0.254
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.855 0.252
CaBr Calcium monobromide rCaBr 2.594 2.839 0.245
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.283 0.245
ClOF3 Chlorine trifluoride oxide rOCl 1.405 1.644 0.239
H2S2 Disulfane rSS 2.056 2.291 0.234
ClF3 Chlorine trifluoride rFCl 1.697 1.930 0.233
ClF3 Chlorine trifluoride rFCl 1.697 1.930 0.233
BrCl Bromine monochloride rClBr 2.136 2.368 0.232
C2H6O2S Dimethyl sulfone rSO 1.431 1.654 0.223
GaP Gallium monophosphide rPGa 2.110 2.331 0.221
GaP Gallium monophosphide rPGa 2.110 2.331 0.221
GaP Gallium monophosphide rPGa 2.110 2.331 0.221
GaP Gallium monophosphide rPGa 2.110 2.331 0.221
S4 Sulfur tetramer rSS 2.155 2.372 0.217
Br2 Bromine diatomic rBrBr 2.281 2.497 0.216
OPCl Phosphorus oxychloride rPCl 2.059 2.273 0.215
S4 Sulfur tetramer rSS 1.898 2.109 0.211
S3 Sulfur trimer rSS 1.917 2.122 0.205
ClF3 Chlorine trifluoride rFCl 1.597 1.798 0.201
ClF3 Chlorine trifluoride rFCl 1.597 1.798 0.201
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.735 0.196
S2 Sulfur diatomic rSS 1.889 2.083 0.194
SCl sulfur monochloride rSCl 1.975 2.168 0.193
CaC Calcium monocarbide rCCa 2.302 2.489 0.188
PS phosphorus sulfide rPS 1.900 2.086 0.186
SO3 Sulfur trioxide rSO 1.418 1.603 0.186
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.898 0.185
SF4 Sulfur tetrafluoride rSF 1.545 1.726 0.181
ClF3 Chlorine trifluoride rFCl 1.697 1.876 0.179
ClF3 Chlorine trifluoride rFCl 1.697 1.876 0.179
As4 Arsenic tetramer rAsAs 2.435 2.613 0.178
SOF4 Sulfur tetrafluoride oxide rSO 1.409 1.587 0.178
CFCl chlorofluoromethylene rCCl 1.714 1.887 0.173
ClOOCl Dichlorine dioxide rOCl 1.704 1.874 0.169
CaBr2 Calcium dibromide rCaBr 2.616 2.784 0.168
SiH3Cl chlorosilane rSiCl 2.051 2.218 0.167
FSN Thiazyl fluoride rFS 1.643 1.810 0.167
SiBr Silicon monobromide rSiBr 2.209 2.375 0.166
SF6 Sulfur Hexafluoride rSF 1.561 1.726 0.165
S2N2 Disulfur dinitride rNS 1.642 1.807 0.165
SiH2Cl2 dichlorosilane rSiCl 2.033 2.196 0.163
NCl nitrogen monochloride rNCl 1.611 1.774 0.163
HOSH hydrogen thioperoxide rSO 1.662 1.818 0.157
AsCl3 Arsenous trichloride rClAs 2.166 2.319 0.153
ClF Chlorine monofluoride rFCl 1.628 1.780 0.151
SOF4 Sulfur tetrafluoride oxide rFS 1.596 1.747 0.151
NCl3 nitrogen trichloride rNCl 1.754 1.904 0.150
SF2 sulfur difluoride rSF 1.587 1.738 0.150
CrH Chromium hydride rHCr 1.655 1.805 0.150
HOCl hypochlorous acid rClO 1.697 1.847 0.150
KH Potassium hydride rKH 2.243 2.388 0.145
S4 Sulfur tetramer rSS 1.898 2.042 0.144
SFCl Sulfur chloride fluoride rFS 1.606 1.749 0.143
CBr Carbon monobromide rCBr 1.821 1.960 0.139
SiBr+ Silicon monobromide cation rSiBr 2.095 2.233 0.138
BH3PH3 borane phosphine rBP 1.937 2.075 0.138
NHCl2 dichloroamine rNCl 1.760 1.894 0.134
AlBr Aluminum monobromide rAlBr 2.295 2.427 0.132
PF2 Phosphorus difluoride rPF 1.579 1.709 0.129
CH2ClCCCl 1,3-dichloropropyne rCCl 1.779 1.907 0.128
SF4 Sulfur tetrafluoride rSF 1.646 1.773 0.127
C2H4S Thiirane rCS 1.815 1.936 0.121
SiH3Br bromosilane rSiBr 2.210 2.331 0.121
GaP Gallium monophosphide rPGa 2.250 2.130 -0.120
GaP Gallium monophosphide rPGa 2.250 2.130 -0.120
GaP Gallium monophosphide rPGa 2.250 2.130 -0.120
GaP Gallium monophosphide rPGa 2.250 2.130 -0.120
GaP Gallium monophosphide rPGa 2.450 2.331 -0.119
GaP Gallium monophosphide rPGa 2.450 2.331 -0.119
GaP Gallium monophosphide rPGa 2.450 2.331 -0.119
GaP Gallium monophosphide rPGa 2.450 2.331 -0.119
NH2SH Thiohydroxylamine rNS 1.705 1.821 0.116
NH2SH Thiohydroxylamine rNS 1.705 1.821 0.116
SiF+ silicon monofluoride cation rFSi 1.527 1.642 0.116
SO+ sulfur monoxide cation rOS 1.424 1.539 0.115
CH2Cl chloromethyl radical rCCl 1.691 1.803 0.112
CH2Cl chloromethyl radical rCCl 1.691 1.803 0.112
SiF3 Silicon trifluoride radical rFSi 1.565 1.676 0.111
CH2BrCl Methane, bromochloro- rCCl 1.755 1.865 0.110
CH2ClCHCHCH3 2-Butene, 1-chloro- rCCl 1.807 1.917 0.110
GaP Gallium monophosphide rPGa 2.240 2.130 -0.110
GaP Gallium monophosphide rPGa 2.240 2.130 -0.110
GaP Gallium monophosphide rPGa 2.240 2.130 -0.110
GaP Gallium monophosphide rPGa 2.240 2.130 -0.110
LiCl lithium chloride rLiCl 2.021 2.130 0.109
CH2Cl chloromethyl radical rCCl 1.691 1.800 0.109
CH2Cl chloromethyl radical rCCl 1.691 1.800 0.109
SiH2F2 difluorosilane rSiF 1.576 1.685 0.109
SiF silicon monofluoride rSiF 1.604 1.713 0.109
CHFClBr fluorochlorobromomethane rCCl 1.745 1.851 0.106
OPCl Phosphorus oxychloride rPO 1.462 1.568 0.106
BrF Bromine monofluoride rFBr 1.759 1.864 0.105
PO Phosphorus monoxide rPO 1.476 1.581 0.105
C2H2ClF 1-chloro-1-fluoroethylene rCCl 1.704 1.809 0.105
C6H4Cl2 1,4-dichlorobenzene rCCl 1.729 1.833 0.104
SiHF3 trifluorosilane rSiF 1.563 1.665 0.103
SiBr4 Silicon tetrabromide rSiBr 2.183 2.285 0.102
NH2SH Thiohydroxylamine rNS 1.719 1.821 0.102
NH2SH Thiohydroxylamine rNS 1.719 1.821 0.102
F2+ flourine diatomic cation rFF 1.322 1.422 0.100
CH2ClCCCl 1,3-dichloropropyne rCCl 1.638 1.737 0.100
CH3Cl Methyl chloride rCCl 1.785 1.885 0.099
N2 Nitrogen diatomic rNN 1.213 1.115 -0.098
N2 Nitrogen diatomic rNN 1.213 1.115 -0.098
CH3CCl2CH3 Propane, 2,2-dichloro- rCCl 1.799 1.896 0.097
ClCOClCO Oxalyl chloride rCCl 1.744 1.840 0.096
HNCS Isothiocyanic acid rCS 1.567 1.662 0.096
CH3CH2SH ethanethiol rCS 1.820 1.915 0.095
CH2Cl2 Methylene chloride rCCl 1.767 1.862 0.095
CH3SCH3 Dimethyl sulfide rCS 1.802 1.895 0.093
TiCl Titanium Monochloride rClTi 2.265 2.357 0.093
C2H6O2S Dimethyl sulfone rCS 1.777 1.869 0.092
C3H6S3 1,3,5-Trithiane rCS 1.801 1.893 0.092
GaP Gallium monophosphide rPGa 2.240 2.331 0.091
GaP Gallium monophosphide rPGa 2.240 2.331 0.091
GaP Gallium monophosphide rPGa 2.240 2.331 0.091
GaP Gallium monophosphide rPGa 2.240 2.331 0.091
CF2CCl2 difluorodichloroethylene rCCl 1.706 1.796 0.090
HNCS Isothiocyanic acid rCS 1.567 1.657 0.090
SeF4 Selenium tetrafluoride rFSe 1.682 1.772 0.090
ONNO NO dimer rNN 2.236 2.147 -0.090
F2 Fluorine diatomic rFF 1.412 1.497 0.085
CH3SH Methanethiol rCS 1.818 1.903 0.085
FSN Thiazyl fluoride rNS 1.448 1.533 0.085
CH2BrF Methane, bromofluoro- rCBr 1.915 1.998 0.083
GaP Gallium monophosphide rPGa 2.250 2.331 0.081
GaP Gallium monophosphide rPGa 2.250 2.331 0.081
GaP Gallium monophosphide rPGa 2.250 2.331 0.081
GaP Gallium monophosphide rPGa 2.250 2.331 0.081
CH2CHCH2F Allyl Fluoride rCF 1.370 1.448 0.078
CH2CHCH2F Allyl Fluoride rCF 1.370 1.448 0.078
CH3SSH Hydrogen methyl disulfide rCS 1.823 1.901 0.078
C2H2+ acetylene cation rCC 1.253 1.330 0.078
He2+ helium diatomic cation rHeHe 1.081 1.158 0.077
HCF Fluoromethylene rCF 1.305 1.382 0.077
NH2SH Thiohydroxylamine rNS 1.705 1.782 0.077
NH2SH Thiohydroxylamine rNS 1.705 1.782 0.077
CH3Br methyl bromide rCBr 1.934 2.011 0.077
CF Fluoromethylidyne rCF 1.276 1.352 0.076
C2H4O Ethylene oxide rCO 1.425 1.501 0.075
CHSNH2 thioformamide rCS 1.626 1.701 0.075
C2H2N2O Furazan rNO 1.373 1.446 0.073
Si2H6 disilane rSiSi 2.320 2.391 0.071
O2- oxygen diatomic anion rOO 1.350 1.419 0.069
CH2CS Thioketene rCS 1.554 1.623 0.069
CF2 Difluoromethylene rCF 1.297 1.367 0.069
GeS Germanium monosulfide rSGe 2.012 2.081 0.069
OCS Carbonyl sulfide rCS 1.560 1.629 0.069
CH3CSNH2 Ethanethioamide rCS 1.647 1.715 0.068
SiSe Silicon Monoselenide rSiSe 2.058 2.125 0.067
SeO2 Selenium dioxide rSeO 1.607 1.674 0.067
CH2CHCH2F Allyl Fluoride rCF 1.382 1.448 0.066
CH2CHCH2F Allyl Fluoride rCF 1.382 1.448 0.066
CH3CHNOH Acetaldoxime rNO 1.408 1.474 0.066
H2O2 Hydrogen peroxide rOO 1.475 1.540 0.065
H2O2 Hydrogen peroxide rOO 1.475 1.540 0.065
CH3CHS Thioacetaldehyde rCS 1.610 1.675 0.065
SeO Selenium monoxide rSeO 1.639 1.703 0.064
NHF2 difluoramine rNF 1.400 1.463 0.063
C4H4Se selenophene rCSe 1.855 1.918 0.063
NH2SH Thiohydroxylamine rNS 1.719 1.782 0.063
NH2SH Thiohydroxylamine rNS 1.719 1.782 0.063
CH3F Methyl fluoride rCF 1.383 1.444 0.061
CH2NOH formaldoxime rNO 1.408 1.469 0.061
KOH Potassium hydroxide rOK 2.212 2.272 0.061
CH2BrCl Methane, bromochloro- rCBr 1.928 1.988 0.060
CH3CH2SH ethanethiol rSH 1.322 1.382 0.060
CH3CH2SH ethanethiol rSH 1.322 1.382 0.060
HCCBr bromoacetylene rCBr 1.792 1.852 0.060
LiBr Lithium Bromide rLiBr 2.170 2.231 0.060
C5H6 Propellane rCC 1.596 1.656 0.060
H2CS Thioformaldehyde rCS 1.611 1.670 0.059
KOH Potassium hydroxide rOH 0.912 0.971 0.059
HS- mercapto anion rSH 1.343 1.402 0.058
NSe Nitrogen monoselenide rNSe 1.652 1.710 0.058
C2H4F2 1,2-difluoroethane rCF 1.390 1.448 0.058
C2H4F2 1,2-difluoroethane rCF 1.390 1.448 0.058
BH3NH3 borane ammonia rBN 1.645 1.702 0.056
F2CCCF2 tetrafluoroallene rCF 1.320 1.376 0.056
CF2CCl2 difluorodichloroethylene rCF 1.315 1.371 0.056
GeF+ Germanium monofluoride cation rFGe 1.665 1.721 0.056
N2O Nitrous oxide rNO 1.184 1.240 0.055
SiH+ silicon monohydride cation rSiH 1.504 1.558 0.054
CF3Br Bromotrifluoromethane rCF 1.327 1.381 0.054
NH2SH Thiohydroxylamine rSH 1.344 1.398 0.054
NH2SH Thiohydroxylamine rSH 1.344 1.398 0.054
CH3SeCH3 dimethylselenide rCSe 1.943 1.997 0.054
PH phosphorus monohydride rPH 1.418 1.471 0.053
BrCN Cyanogen bromide rCBr 1.789 1.842 0.053
CH3SH Methanethiol rSH 1.329 1.382 0.053
BCl3 Borane, trichloro- rBCl 1.742 1.794 0.052
MgH magnesium monohydride rMgH 1.730 1.781 0.051
PH phosphorus monohydride rPH 1.420 1.471 0.051
CHFClBr fluorochlorobromomethane rCBr 1.928 1.979 0.051
CH2FCH2CH3 1-Fluoropropane rCF 1.401 1.451 0.050
CHFClBr fluorochlorobromomethane rCF 1.356 1.406 0.050
223 molecules.