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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 ROMP2/STO-3G

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
GaAs Gallium arsenide rGaAs 2.530 1.978 -0.552
GaAs Gallium arsenide rGaAs 2.530 2.007 -0.523
GaAs Gallium arsenide rGaAs 2.530 2.007 -0.523
C2H4F2 1,2-difluoroethane rCH 1.093 1.587 0.494
AlP Aluminum monophosphide rAlP 2.400 2.058 -0.342
AlP Aluminum monophosphide rAlP 2.400 2.058 -0.342
AlP Aluminum monophosphide rAlP 2.400 2.058 -0.342
AlP Aluminum monophosphide rAlP 2.400 2.058 -0.342
AlP Aluminum monophosphide rAlP 2.400 2.058 -0.342
AlP Aluminum monophosphide rAlP 2.400 2.058 -0.342
Be2 Beryllium diatomic rBeBe 2.460 2.122 -0.338
GaF Gallium monofluoride rFGa 1.774 1.439 -0.335
OClO Chlorine dioxide rClO 1.470 1.790 0.321
N2 Nitrogen diatomic rNN 1.098 1.414 0.316
N2 Nitrogen diatomic rNN 1.098 1.414 0.316
GaCl Gallium monochloride rClGa 2.202 1.908 -0.294
NaS Sodium sulfide rNaS 2.489 2.227 -0.262
Ne2+ Neon diatomic cation rNeNe 1.765 1.557 -0.208
AlP Aluminum monophosphide rAlP 2.260 2.058 -0.202
AlP Aluminum monophosphide rAlP 2.260 2.058 -0.202
AlP Aluminum monophosphide rAlP 2.260 2.058 -0.202
AlP Aluminum monophosphide rAlP 2.260 2.058 -0.202
AlP Aluminum monophosphide rAlP 2.260 2.058 -0.202
AlP Aluminum monophosphide rAlP 2.260 2.058 -0.202
N2 Nitrogen diatomic rNN 1.213 1.414 0.201
N2 Nitrogen diatomic rNN 1.213 1.414 0.201
SO2 Sulfur dioxide rSO 1.432 1.625 0.193
SO Sulfur monoxide rSO 1.481 1.667 0.186
SO Sulfur monoxide rSO 1.481 1.667 0.186
NaO sodium monoxide rONa 2.052 1.865 -0.186
NCl nitrogen monochloride rNCl 1.611 1.790 0.179
IO Iodine monoxide rIO 1.868 2.046 0.178
SO Sulfur monoxide rOS 1.500 1.667 0.167
SO Sulfur monoxide rOS 1.500 1.667 0.167
AlP Aluminum monophosphide rAlP 2.220 2.058 -0.162
AlP Aluminum monophosphide rAlP 2.220 2.058 -0.162
AlP Aluminum monophosphide rAlP 2.220 2.058 -0.162
AlP Aluminum monophosphide rAlP 2.220 2.058 -0.162
AlP Aluminum monophosphide rAlP 2.220 2.058 -0.162
AlP Aluminum monophosphide rAlP 2.220 2.058 -0.162
ClO Monochlorine monoxide rClO 1.596 1.752 0.156
CaCl calcium monochloride rClCa 2.437 2.586 0.149
CO Carbon monoxide rCO 1.128 1.268 0.140
KH Potassium hydride rKH 2.243 2.104 -0.139
LiS Lithium monosulfide rLiS 2.150 2.017 -0.133
OH- hydroxide anion rOH 0.964 1.094 0.130
MgH magnesium monohydride rMgH 1.730 1.600 -0.129
BrO Bromine monoxide rOBr 1.718 1.844 0.126
BrO Bromine monoxide rOBr 1.718 1.843 0.126
CO+ carbon monoxide cation rCO 1.115 1.233 0.118
NBr nitrogen monobromide rNBr 1.765 1.883 0.118
CO+ carbon monoxide cation rCO 1.115 1.233 0.117
C2 Carbon diatomic rCC 1.243 1.358 0.115
C2 Carbon diatomic rCC 1.243 1.358 0.115
NO2 Nitrogen dioxide rNO 1.193 1.308 0.115
GeH germylidene rGeH 1.588 1.474 -0.114
GeH germylidene rGeH 1.588 1.474 -0.114
HNO Nitrosyl hydride rNO 1.209 1.322 0.113
GeH2 germylene rGeH 1.588 1.478 -0.110
HOCO+ Hydrocarboxyl cation rCO 1.209 1.317 0.108
HN3 hydrogen azide rNH 0.975 1.083 0.108
B2 Boron diatomic rBB 1.590 1.483 -0.107
SCl sulfur monochloride rSCl 1.975 2.082 0.107
SCl sulfur monochloride rSCl 1.975 2.082 0.107
N3 azide radical rNN 1.181 1.286 0.105
N3 azide radical rNN 1.181 1.286 0.105
CN Cyano radical rCN 1.172 1.273 0.101
O2 Oxygen diatomic rOO 1.208 1.308 0.101
GeF Germanium monofluoride rFGe 1.745 1.650 -0.095
NO Nitric oxide rNO 1.154 1.248 0.095
NO Nitric oxide rNO 1.154 1.248 0.095
NO Nitric oxide rNO 1.154 1.248 0.095
GeF Germanium monofluoride rFGe 1.745 1.651 -0.094
C2H4F2 1,2-difluoroethane rCC 1.493 1.587 0.094
C2H4F2 1,2-difluoroethane rCC 1.493 1.587 0.094
HCl+ hydrogen chloride cation rHCl 1.315 1.408 0.093
CH2Cl chloromethyl radical rCCl 1.691 1.783 0.092
CH2Cl chloromethyl radical rCCl 1.691 1.783 0.092
CH2Cl chloromethyl radical rCCl 1.691 1.783 0.092
CH2Cl chloromethyl radical rCCl 1.691 1.783 0.092
NS Mononitrogen monosulfide rNS 1.497 1.587 0.090
C2H4F2 1,2-difluoroethane rCC 1.501 1.587 0.086
C2H4F2 1,2-difluoroethane rCC 1.501 1.587 0.086
PO Phosphorus monoxide rPO 1.476 1.561 0.085
PO Phosphorus monoxide rPO 1.476 1.561 0.085
HN3 hydrogen azide rNN 1.133 1.218 0.085
CH2Cl chloromethyl radical rCCl 1.691 1.771 0.080
CH2Cl chloromethyl radical rCCl 1.691 1.771 0.080
HOCO+ Hydrocarboxyl cation rCO 1.140 1.219 0.079
He2+ helium diatomic cation rHeHe 1.081 1.159 0.079
He2+ helium diatomic cation rHeHe 1.081 1.159 0.079
S2 Sulfur diatomic rSS 1.889 1.965 0.075
SiH2 silicon dihydride rSiH 1.514 1.439 -0.075
NSe Nitrogen monoselenide rNSe 1.652 1.726 0.074
GaO Gallium monoxide rOGa 1.743 1.670 -0.073
GaO Gallium monoxide rOGa 1.743 1.670 -0.073
BrO+ Bromine monoxide cation rOBr 1.635 1.708 0.073
CH3CH2O Ethoxy radical rCO 1.388 1.460 0.072
ICN Cyanogen iodide rCN 1.160 1.232 0.072
Ar2+ Argon diatomic cation rArAr 2.320 2.392 0.072
VO Vanadium monoxide rVO 1.589 1.518 -0.071
HCCl Chloromethylene rCCl 1.696 1.767 0.071
CBr Carbon monobromide rCBr 1.821 1.891 0.070
FCO Carbonyl fluoride rCO 1.180 1.248 0.068
FCO Carbonyl fluoride rCO 1.180 1.248 0.068
LiO lithium oxide rLiO 1.688 1.622 -0.066
SiCl Clorosilylidyne rSiCl 2.061 2.126 0.065
C4 Carbon tetramer rCC 1.304 1.369 0.065
BH Boron monohydride rBH 1.232 1.168 -0.065
ArH+ Argon hydride cation rArH 1.292 1.356 0.064
PF2 Phosphorus difluoride rPF 1.579 1.643 0.064
SiF3 Silicon trifluoride radical rFSi 1.565 1.628 0.063
C3 carbon trimer rCC 1.277 1.340 0.063
OH Hydroxyl radical rOH 0.970 1.032 0.063
HCS+ Thioformyl cation rCS 1.478 1.540 0.062
H2Cl+ dihydrogen monochloride cation rHCl 1.321 1.382 0.061
HO2 Hydroperoxy radical rOH 0.971 1.031 0.061
CF2 Difluoromethylene rCF 1.297 1.356 0.058
CaH Calcium monohydride rCaH 2.003 2.061 0.058
NF3 Nitrogen trifluoride rNF 1.365 1.423 0.058
TiH Titanium monohydride rHTi 1.785 1.728 -0.057
B2 Boron diatomic rBB 1.590 1.534 -0.056
Se2 Selenium diatomic rSeSe 2.166 2.222 0.056
HOCO+ Hydrocarboxyl cation rOH 0.977 1.032 0.055
NH2 Amino radical rNH 1.024 1.079 0.055
AsH Arsenic monohydride rAsH 1.535 1.480 -0.055
AsH Arsenic monohydride rAsH 1.535 1.480 -0.055
HCO Formyl radical rCH 1.080 1.134 0.054
C2H2O2 Ethanedial rCO 1.212 1.265 0.053
SF Monosulfur monofluoride rSF 1.599 1.652 0.053
SiP Silicon monophosphide rSiP 2.078 2.026 -0.051
SiP Silicon monophosphide rSiP 2.078 2.026 -0.051
SeO Selenium monoxide rSeO 1.639 1.690 0.050
133 molecules.