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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 LSDA/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
HSSSH trisulfane rHS 1.344 2.077 0.734
HSSSH trisulfane rHS 1.344 2.077 0.734
HSSSH trisulfane rHS 1.344 2.077 0.733
HSSSH trisulfane rHS 1.344 2.077 0.733
CH3CH2SH ethanethiol rCH 1.095 1.819 0.724
CH3CH2SH ethanethiol rCH 1.095 1.814 0.719
Ne2 Neon diatomic rNeNe 3.100 2.438 -0.662
Mg2 Magnesium diatomic rMgMg 3.891 3.377 -0.513
Mg2 Magnesium diatomic rMgMg 3.891 3.378 -0.513
Be2 Beryllium diatomic rBeBe 2.460 1.992 -0.468
CH3SO2NH2 methanesulfonamide rCN 1.207 1.670 0.463
C4H10O Methyl propyl ether rCC 1.530 1.103 -0.427
CH3CH2SH ethanethiol rCH 1.089 1.505 0.416
CH3CH2SH ethanethiol rCH 1.089 1.503 0.414
CH3CH2SH ethanethiol rCH 1.092 1.505 0.413
CH3CH2SH ethanethiol rCH 1.092 1.503 0.411
Al2 Aluminum diatomic rAlAl 2.701 3.058 0.357
AlP Aluminum monophosphide rAlP 2.400 2.063 -0.337
AlP Aluminum monophosphide rAlP 2.400 2.063 -0.337
AlP Aluminum monophosphide rAlP 2.400 2.063 -0.337
Ar2 Argon diatomic rArAr 3.758 3.423 -0.335
ONNO NO dimer rNN 2.236 1.906 -0.330
GaP Gallium monophosphide rPGa 2.110 2.435 0.325
GaP Gallium monophosphide rPGa 2.110 2.435 0.325
GaP Gallium monophosphide rPGa 2.110 2.435 0.325
GaP Gallium monophosphide rPGa 2.110 2.435 0.325
CH3CH2SH ethanethiol rCS 1.820 1.503 -0.317
CH3CH2SH ethanethiol rCS 1.820 1.505 -0.315
C4H10O Methyl propyl ether rCH 1.099 1.391 0.292
CH3CH2SH ethanethiol rCC 1.528 1.819 0.291
CH3CH2SH ethanethiol rCC 1.528 1.814 0.286
GaP Gallium monophosphide rPGa 2.450 2.201 -0.249
GaP Gallium monophosphide rPGa 2.450 2.201 -0.249
GaP Gallium monophosphide rPGa 2.450 2.201 -0.249
GaP Gallium monophosphide rPGa 2.450 2.201 -0.249
Al2 Aluminum diatomic rAlAl 2.701 2.458 -0.243
Al2 Aluminum diatomic rAlAl 2.701 2.458 -0.243
Ar2+ Argon diatomic cation rArAr 2.320 2.550 0.230
B2 Boron diatomic rBB 1.590 1.366 -0.224
ClOOCl Dichlorine dioxide rOCl 1.704 1.920 0.215
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.250 0.210
Si2 Silicon diatomic rSiSi 2.246 2.043 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.197 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.197 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.197 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.197 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.197 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.197 -0.203
AlP Aluminum monophosphide rAlP 2.260 2.063 -0.197
AlP Aluminum monophosphide rAlP 2.260 2.063 -0.197
AlP Aluminum monophosphide rAlP 2.260 2.063 -0.197
NaK Sodium Potassium rNaK 3.589 3.394 -0.195
GaP Gallium monophosphide rPGa 2.240 2.435 0.195
GaP Gallium monophosphide rPGa 2.240 2.435 0.195
GaP Gallium monophosphide rPGa 2.240 2.435 0.195
GaP Gallium monophosphide rPGa 2.240 2.435 0.195
ClOOCl Dichlorine dioxide rOO 1.426 1.232 -0.194
GaP Gallium monophosphide rPGa 2.250 2.435 0.185
GaP Gallium monophosphide rPGa 2.250 2.435 0.185
GaP Gallium monophosphide rPGa 2.250 2.435 0.185
GaP Gallium monophosphide rPGa 2.250 2.435 0.185
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.066 -0.174
ClF3 Chlorine trifluoride rFCl 1.597 1.770 0.173
ClF3 Chlorine trifluoride rFCl 1.597 1.770 0.173
AlP Aluminum monophosphide rAlP 2.220 2.063 -0.157
AlP Aluminum monophosphide rAlP 2.220 2.063 -0.157
AlP Aluminum monophosphide rAlP 2.220 2.063 -0.157
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.507 0.148
AlN Aluminum nitride rNAl 1.786 1.664 -0.123
N2 Nitrogen diatomic rNN 1.213 1.099 -0.114
N2 Nitrogen diatomic rNN 1.213 1.099 -0.114
N2 Nitrogen diatomic rNN 1.213 1.099 -0.114
N2 Nitrogen diatomic rNN 1.213 1.099 -0.114
N2 Nitrogen diatomic rNN 1.213 1.099 -0.114
N2 Nitrogen diatomic rNN 1.213 1.099 -0.114
SiP Silicon monophosphide rSiP 2.078 1.976 -0.101
SiP Silicon monophosphide rSiP 2.078 1.977 -0.101
ClFO3 Perchloryl fluoride rFCl 1.598 1.695 0.097
Na2 Sodium diatomic rNaNa 3.079 2.983 -0.096
KF Potassium Fluoride rKF 2.171 2.077 -0.094
KOH Potassium hydroxide rOK 2.212 2.118 -0.093
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.694 0.091
GaP Gallium monophosphide rPGa 2.110 2.201 0.091
GaP Gallium monophosphide rPGa 2.110 2.201 0.091
GaP Gallium monophosphide rPGa 2.110 2.201 0.091
GaP Gallium monophosphide rPGa 2.110 2.201 0.091
B4H10 Tetraborane(10) rHB 1.484 1.397 -0.087
Na2Cl2 Disodium dichloride rNaCl 2.584 2.498 -0.086
GaCl3 Gallium trichloride rClGa 2.180 2.095 -0.085
SiC silicon monocarbide rCSi 1.722 1.638 -0.084
SiC silicon monocarbide rCSi 1.722 1.638 -0.084
CH3O Methoxy radical rCO 1.405 1.321 -0.084
Ne2+ Neon diatomic cation rNeNe 1.765 1.848 0.083
K2 Potassium diatomic rKK 3.905 3.822 -0.083
He2+ helium diatomic cation rHeHe 1.081 1.163 0.082
He2+ helium diatomic cation rHeHe 1.081 1.163 0.082
ClNO2 Nitryl chloride rNCl 1.840 1.919 0.079
SeO3 selenium trioxide rSeO 1.688 1.608 -0.079
Be2 Beryllium diatomic rBeBe 2.460 2.382 -0.078
CO Carbon monoxide rCO 1.128 1.205 0.076
ClS2 Sulfur chloride rSCl 2.071 2.147 0.076
TiH Titanium monohydride rHTi 1.785 1.709 -0.076
CH3CHNOH Acetaldoxime rCC 1.550 1.475 -0.075
ClF3 Chlorine trifluoride rFCl 1.697 1.770 0.073
ClF3 Chlorine trifluoride rFCl 1.697 1.770 0.073
ClSSCl Disulfur dichloride rSCl 2.057 2.128 0.071
CH3CH2O Ethoxy radical rCO 1.388 1.318 -0.070
B2 Boron diatomic rBB 1.590 1.520 -0.070
B2 Boron diatomic rBB 1.590 1.520 -0.070
C5H10 2-Pentene, (E)- rCC 1.576 1.507 -0.069
LiCl- lithium chloride anion rLiCl 2.180 2.112 -0.068
BrF5 bromine pentafluoride rFBr 1.689 1.756 0.067
ClF3 Chlorine trifluoride rFCl 1.597 1.662 0.065
ClF3 Chlorine trifluoride rFCl 1.597 1.662 0.065
BHCl2 Borane, dichloro- rBH 1.130 1.193 0.063
KBr Potassium Bromide rKBr 2.821 2.757 -0.063
C2 Carbon diatomic rCC 1.243 1.306 0.063
C2 Carbon diatomic rCC 1.243 1.306 0.063
GaO Gallium monoxide rOGa 1.743 1.680 -0.063
AlP Aluminum monophosphide rAlP 2.260 2.197 -0.063
AlP Aluminum monophosphide rAlP 2.260 2.197 -0.063
AlP Aluminum monophosphide rAlP 2.260 2.197 -0.063
AlP Aluminum monophosphide rAlP 2.260 2.197 -0.063
AlP Aluminum monophosphide rAlP 2.260 2.197 -0.063
AlP Aluminum monophosphide rAlP 2.260 2.197 -0.063
SOCl2 thionyl chloride rSCl 2.076 2.137 0.061
BN boron nitride rBN 1.325 1.265 -0.060
BN boron nitride rBN 1.325 1.265 -0.060
HCO Formyl radical rCH 1.080 1.140 0.060
HCO Formyl radical rCH 1.080 1.140 0.060
HPO Hydrogen phosphorus oxide rPH 1.433 1.492 0.059
CuO Copper Monoxide rCuO 1.724 1.665 -0.059
C4F6 perfluorobutadiene rCC 1.488 1.429 -0.059
FSN Thiazyl fluoride rFS 1.643 1.702 0.059
HClO4 perchloric acid rOCl 1.641 1.699 0.058
C4F6 perfluorobutadiene rCC 1.488 1.430 -0.058
C5H6 1,3-Cyclopentadiene rCC 1.540 1.483 -0.057
BH3CO Borane carbonyl rBC 1.534 1.477 -0.057
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.560 1.505 -0.055
CaF Calcium monofluoride rFCa 1.967 1.912 -0.055
C4H5N Cyclopropanecarbonitrile rCC 1.472 1.418 -0.054
BrF3 Bromine trifluoride rFBr 1.721 1.775 0.054
C3H5 Allyl radical rCC 1.428 1.375 -0.053
KOH Potassium hydroxide rOH 0.912 0.965 0.053
KCl Potassium Chloride rKCl 2.667 2.613 -0.053
C3H5 Allyl radical rCC 1.428 1.375 -0.053
SO2F2 Sulfuryl fluoride rFS 1.530 1.583 0.053
C5H12O Butane, 1-methoxy- rCO 1.448 1.396 -0.052
SF5Cl sulfur chloropentafluoride rSCl 2.030 2.082 0.052
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.590 0.051
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.764 0.051
HN3 hydrogen azide rNH 0.975 1.026 0.051
B4H10 Tetraborane(10) rBB 1.856 1.806 -0.050
153 molecules.