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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 ROHF/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
CaC Calcium monocarbide rCCa 2.302 3.324 1.023
CH3CH2SH ethanethiol rCH 1.095 1.829 0.734
CH3CH2SH ethanethiol rCH 1.089 1.524 0.435
CH3CH2SH ethanethiol rCH 1.092 1.524 0.432
Be2 Beryllium diatomic rBeBe 2.460 2.049 -0.411
CH3CH2SH ethanethiol rCC 1.528 1.829 0.301
CH3CH2SH ethanethiol rCS 1.820 1.524 -0.296
C2H2+ acetylene cation rCH 1.077 1.313 0.237
GaP Gallium monophosphide rPGa 2.110 2.310 0.200
GaP Gallium monophosphide rPGa 2.110 2.310 0.200
GaP Gallium monophosphide rPGa 2.110 2.310 0.200
GaP Gallium monophosphide rPGa 2.110 2.310 0.200
Ar2+ Argon diatomic cation rArAr 2.320 2.478 0.158
GaP Gallium monophosphide rPGa 2.450 2.310 -0.140
GaP Gallium monophosphide rPGa 2.450 2.310 -0.140
GaP Gallium monophosphide rPGa 2.450 2.310 -0.140
GaP Gallium monophosphide rPGa 2.450 2.310 -0.140
AlP Aluminum monophosphide rAlP 2.400 2.262 -0.138
AlP Aluminum monophosphide rAlP 2.400 2.262 -0.138
AlP Aluminum monophosphide rAlP 2.400 2.262 -0.138
AlP Aluminum monophosphide rAlP 2.400 2.262 -0.138
AlP Aluminum monophosphide rAlP 2.400 2.262 -0.138
AlP Aluminum monophosphide rAlP 2.400 2.262 -0.138
SiP Silicon monophosphide rSiP 2.078 1.959 -0.119
F2+ flourine diatomic cation rFF 1.322 1.208 -0.114
Si2 Silicon diatomic rSiSi 2.246 2.139 -0.107
CaBr Calcium monobromide rCaBr 2.594 2.681 0.087
B2 Boron diatomic rBB 1.590 1.504 -0.086
N2 Nitrogen diatomic rNN 1.098 1.184 0.086
N2 Nitrogen diatomic rNN 1.098 1.184 0.086
CaCl calcium monochloride rClCa 2.437 2.520 0.083
NBr nitrogen monobromide rNBr 1.765 1.835 0.070
GaP Gallium monophosphide rPGa 2.240 2.310 0.070
GaP Gallium monophosphide rPGa 2.240 2.310 0.070
GaP Gallium monophosphide rPGa 2.240 2.310 0.070
GaP Gallium monophosphide rPGa 2.240 2.310 0.070
GaO Gallium monoxide rOGa 1.743 1.809 0.066
KH Potassium hydride rKH 2.243 2.307 0.064
O2- oxygen diatomic anion rOO 1.350 1.286 -0.064
HCF Fluoromethylene rCH 1.138 1.075 -0.063
BrO Bromine monoxide rOBr 1.718 1.780 0.062
BC boron monocarbide rBC 1.491 1.431 -0.060
GaP Gallium monophosphide rPGa 2.250 2.310 0.060
GaP Gallium monophosphide rPGa 2.250 2.310 0.060
GaP Gallium monophosphide rPGa 2.250 2.310 0.060
GaP Gallium monophosphide rPGa 2.250 2.310 0.060
CO Carbon monoxide rCO 1.128 1.187 0.059
HNO Nitrosyl hydride rNH 1.090 1.032 -0.058
GaAs Gallium arsenide rGaAs 2.530 2.588 0.058
NCl nitrogen monochloride rNCl 1.611 1.668 0.057
NCl nitrogen monochloride rNCl 1.611 1.668 0.057
CuH Copper monohydride rCuH 1.463 1.519 0.056
CuH Copper monohydride rCuH 1.463 1.519 0.056
O2+ diatomic oxygen cation rOO 1.116 1.061 -0.055
BrO Bromine monoxide rOBr 1.718 1.772 0.055
BrNO Nitrosyl bromide rNO 1.146 1.091 -0.055
BH Boron monohydride rBH 1.232 1.179 -0.053
GaAs Gallium arsenide rGaAs 2.530 2.583 0.053
CaH Calcium monohydride rCaH 2.003 2.054 0.051
SiBr Silicon monobromide rSiBr 2.209 2.260 0.051
GaO Gallium monoxide rOGa 1.743 1.794 0.051
O2 Oxygen diatomic rOO 1.208 1.157 -0.051
CH2 Methylene rCH 1.107 1.056 -0.050
CH2 Methylene rCH 1.107 1.056 -0.050
64 molecules.