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Average Bond Length Differences by Model Chemistry

Calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental unc. Calculated Difference atom1 atom2
C4H10O Methyl propyl ether rCC 1.530   1.099 -0.431 5 13
SiP Silicon monophosphide rSiP 2.078 ±0.002 2.009 -0.069 1 2
NSe Nitrogen monoselenide rN=Se 1.652   1.624 -0.027 1 2
C2H2O2 Ethanedial rCH 1.132   1.111 -0.021 1 3
NH3BF3 Amminetrifluoroboron rBN 1.673   1.654 -0.019 1 2
TiCl Titanium Monochloride rClTi 2.265 ±0.000 2.246 -0.019 1 2
CH3CH2CH2CH3 Butane rCH 1.117   1.102 -0.015 1 5
LiOH lithium hydroxide rOH 0.969   0.954 -0.015 1 3
C4H8O2 Ethyl acetate rCH 1.105   1.093 -0.012 1 7
C3F6 hexafluoropropene rCF 1.329 ±0.003 1.320 -0.009 1 4
CH3CH2CHO Propanal rCH 1.103   1.097 -0.006 1 6
B2H6 Diborane rBH 1.200   1.195 -0.005 1 5
CH3NH2 methyl amine rCN 1.471 ±0.003 1.468 -0.003 1 2
SiH2Cl2 dichlorosilane rSiH 1.480 ±0.015 1.477 -0.003 1 2
C2H2O2 Ethanedial rCC 1.526   1.523 -0.003 1 2
NH4+ ammonium cation rHN 1.029 ±0.000 1.026 -0.003 1 2
CH2NH Methanimine rCH 1.103   1.100 -0.003 1 3
C8H8 cubane rCH 1.097   1.095 -0.002 1 9
HOCl hypochlorous acid rOH 0.973 ±0.002 0.971 -0.002 1 2
HF+ hydrogen fluoride cation rHF 1.014   1.012 -0.002 1 2
CH3CH2CHO Propanal rCH 1.105   1.103 -0.002 2 8
CH3NH2 methyl amine rNH 1.018 ±0.001 1.017 -0.001 2 6
C4H8O2 Ethyl acetate rCC 1.508   1.507 -0.001 1 2
CH3CH2CHO Propanal rCC 1.509   1.509 0.000 2 3
C4H8O2 Ethyl acetate rCC 1.515   1.515 0.000 5 6
AsH Arsenic monohydride rAsH 1.535 ±0.001 1.535 0.000 1 2
CH2CHCH2CH3 1-Butene rCC 1.536   1.536 0.000 1 2
CH3CH2CH2CH3 Butane rCC 1.531   1.531 0.000 1 2
H2Cl+ dihydrogen monochloride cation rHCl 1.321 ±0.000 1.321 0.001 1 2
HSe Selenium monohydride rSeH 1.475 ±0.010 1.476 0.001 1 2
CH3CH2CHO Propanal rCH 1.115   1.116 0.001 3 10
C5H6 Propellane rCC 1.525 ±0.002 1.526 0.001 1 2
CH3CH2CHO Propanal rCH 1.096   1.097 0.001 1 5
C2H Ethynyl radical rC#C 1.217   1.218 0.001 1 2
CH3CHO Acetaldehyde rCH 1.114   1.115 0.001 1 4
C5H6 Propellane rCC 1.596 ±0.005 1.598 0.002 2 5
CH2 Methylene rCH 1.085   1.087 0.002 1 2
CH3CCH propyne rCH 1.096   1.098 0.002 1 5
F2 Fluorine diatomic rFF 1.412   1.414 0.002 1 2
CH3CH2CHO Propanal rCC 1.523   1.525 0.002 1 2
HeH+ Helium hydride cation rHHe 0.790   0.792 0.003 1 2
FO Oxygen monofluoride rFO 1.354   1.357 0.003 1 2
B2H6 Diborane rBH 1.320   1.323 0.003 1 3
CH2CO Ketene rCH 1.083   1.085 0.003 1 4
CH3NO nitrosomethane rCH 1.094   1.097 0.003 1 4
H2CSe Selenoformaldehyde rHC 1.090   1.094 0.003 1 3
CHF3 Methane, trifluoro- rCH 1.091 ±0.014 1.094 0.003 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.093 ±0.006 1.097 0.004 4 8
CH3CHS Thioacetaldehyde rCH 1.098   1.102 0.004 2 6
CH3CHFCH3 2-Fluoropropane rCH 1.094 ±0.005 1.098 0.004 4 10
C3H8 Propane rCH 1.096   1.101 0.005 1 4
C4H8 cyclobutane rCH 1.093   1.098 0.005 1 5
CH3CHClCH3 Propane, 2-chloro- rCH 1.091   1.096 0.005 2 5
CH3CHS Thioacetaldehyde rCH 1.090   1.095 0.005 2 5
C2H2ClF 1-chloro-1-fluoroethylene rCH 1.082 ±0.001 1.087 0.005 2 5
CH3OCH3 Dimethyl ether rCH 1.099 ±0.001 1.104 0.005 2 6
C3H6 Cyclopropane rCH 1.083   1.089 0.006 1 4
CH2Cl2 Methylene chloride rCH 1.085 ±0.002 1.091 0.006 1 2
HS+ sulfur monohydride cation rSH 1.374   1.380 0.006 1 2
FNO2 Nitryl fluoride rN=O 1.180 ±0.005 1.186 0.006 1 3
H2O Water rOH 0.958 ±0.000 0.964 0.006 1 2
C4H8 cyclobutane rCH 1.091   1.097 0.006 1 6
CH3OCH3 Dimethyl ether rCO 1.411 ±0.001 1.417 0.006 1 2
CH2CHF Ethene, fluoro- rCH 1.082   1.089 0.007 1 4
OH Hydroxyl radical rOH 0.970   0.976 0.007 1 2
CrH Chromium hydride rHCr 1.655 ±0.001 1.662 0.007 1 2
CH3NO nitrosomethane rCH 1.092   1.099 0.007 1 5
OH- hydroxide anion rOH 0.964   0.971 0.007 1 2
HF Hydrogen fluoride rHF 0.917 ±0.000 0.924 0.007 1 2
SiH3F monofluorosilane rSiH 1.476   1.483 0.007 1 3
C2H2+ acetylene cation rC=C 1.253 ±0.001 1.260 0.008 1 2
C3H4 cyclopropene rCH 1.088   1.096 0.008 1 6
HNO3 Nitric acid rNO 1.406   1.414 0.008 1 2
C3F6 hexafluoropropene rC=C 1.329 ±0.003 1.337 0.008 1 2
HSiCl Chlorosilylene rSiH 1.525 ±0.005 1.533 0.008 1 3
CH3CHFCH3 2-Fluoropropane rCH 1.092   1.100 0.008 1 3
C2H2 Acetylene rCH 1.063   1.071 0.008 1 3
SiH3Cl chlorosilane rSiH 1.475   1.483 0.008 1 3
CH3CHClCH3 Propane, 2-chloro- rCH 1.092   1.100 0.008 3 6
N3 azide radical rNN 1.181   1.189 0.008 1 2
ArH+ Argon hydride cation rArH 1.292 ±0.000 1.301 0.009 1 2
SiH4 Silane rSiH 1.480 ±0.000 1.488 0.009 1 2
NO Nitric oxide rN=O 1.154 ±0.000 1.162 0.009 1 2
CH4 Methane rCH 1.087 ±0.001 1.096 0.009 1 2
C4H6 Bicyclo[1.1.0]butane rCC 1.497   1.506 0.009 1 2
CH3CHO Acetaldehyde rCH 1.086   1.095 0.009 2 5
CH3CCH propyne rCH 1.060   1.069 0.009 3 4
OCSe Carbonyl selenide rC=O 1.159   1.168 0.009 1 2
H2CSe Selenoformaldehyde rC=Se 1.753   1.763 0.009 1 2
CO+ carbon monoxide cation rC=O 1.115 ±0.000 1.125 0.010 1 2
HNCNH diiminomethane rC=N 1.224 ±0.001 1.234 0.010 1 2
CH2CO Ketene rC=O 1.162   1.172 0.010 2 3
CH3Br methyl bromide rCH 1.082 ±0.001 1.092 0.010 1 3
CH3OCH3 Dimethyl ether rCH 1.085 ±0.001 1.095 0.010 2 4
CH3CHS Thioacetaldehyde rCH 1.089   1.099 0.010 1 4
C10H8 naphthalene rC:C 1.410   1.421 0.011 2 3
BH Boron monohydride rBH 1.232   1.243 0.011 1 2
CH2CHCH2CH3 1-Butene rCC 1.493   1.504 0.011 2 3
NH2SH Thiohydroxylamine rSH 1.344 ±0.029 1.355 0.011 2 3
CH2CHF Ethene, fluoro- rCH 1.077   1.088 0.011 2 5
CH3CHFCH3 2-Fluoropropane rCH 1.088 ±0.006 1.099 0.011 4 6
BO boron monoxide rB=O 1.205   1.215 0.011 1 2
C2H2+ acetylene cation rCH 1.077 ±0.005 1.088 0.011 1 3
CH Methylidyne rCH 1.120   1.131 0.011 1 2
C3H4 cyclopropene rCH 1.072   1.083 0.011 2 4
CH3NH2 methyl amine rCH 1.093 ±0.000 1.104 0.011 1 3
H2Se Hydrogen selenide rSeH 1.460   1.471 0.011 1 2
HBr+ hydrogen bromide cation rHBr 1.448   1.460 0.011 1 2
O2 Oxygen diatomic rO=O 1.208   1.219 0.012 1 2
HBr hydrogen bromide rHBr 1.414 ±0.000 1.426 0.012 1 2
C4H8O2 Ethyl acetate rCO 1.345   1.357 0.012 2 3
CO Carbon monoxide rC#O 1.128 ±0.000 1.140 0.012 1 2
CH2F2 Methane, difluoro- rCH 1.084 ±0.003 1.096 0.012 1 2
NO+ nitric oxide cation rN=O 1.066   1.078 0.012 1 2
C3H6 Cyclopropane rCC 1.501   1.513 0.012 1 2
KrH+ Protonated Krypton rHKr 1.421 ±0.000 1.434 0.013 1 2
LiNH2 lithium amide rLiN 1.736 ±0.003 1.749 0.013 1 2
NS Mononitrogen monosulfide rNS 1.497 ±0.000 1.510 0.013 1 2
OCSe Carbonyl selenide rC=Se 1.709   1.722 0.013 1 3
C2H3 vinyl rCH 1.085   1.098 0.013 2 4
C4H8O2 Ethyl acetate rC=O 1.203   1.216 0.013 2 4
CN Cyano radical rC#N 1.172   1.185 0.013 1 2
GeH germylidene rGeH 1.588   1.602 0.014 1 2
SiH2F2 difluorosilane rSiH 1.462   1.475 0.014 1 4
MgH magnesium monohydride rMgH 1.730   1.744 0.014 1 2
AsH3 Arsine rAsH 1.511 ±0.000 1.525 0.014 1 2
C2H2 Acetylene rC#C 1.203   1.217 0.015 1 2
LiOH lithium hydroxide rLiO 1.582   1.597 0.015 1 2
SiH3+ Silyl cation rSiH 1.460 ±0.010 1.475 0.015 1 2
HS- mercapto anion rSH 1.343   1.359 0.016 1 2
NO- nitric oxide anion rN=O 1.258 ±0.010 1.274 0.016 1 2
N2 Nitrogen diatomic rN#N 1.098   1.114 0.016 1 2
NaLi lithium sodium rLiNa 2.889   2.905 0.016 1 2
H2CS Thioformaldehyde rC=S 1.611   1.627 0.016 1 2
PH phosphorus monohydride rPH 1.422   1.438 0.016 1 2
HCl Hydrogen chloride rHCl 1.275 ±0.000 1.291 0.016 1 2
H2 Hydrogen diatomic rHH 0.741   0.758 0.016 1 2
GeH3F monofluorogermane rGeH 1.515 ±0.000 1.531 0.016 1 3
SCSe Carbon sulfide selenide rC=Se 1.695 ±0.002 1.711 0.016 1 3
SiH Silylidyne rSiH 1.520   1.537 0.017 1 2
CH3CSNH2 Ethanethioamide rC=S 1.647 ±0.002 1.665 0.018 1 2
CF Fluoromethylidyne rCF 1.276   1.294 0.018 1 2
HCl+ hydrogen chloride cation rHCl 1.315   1.333 0.018 1 2
CH2Br2 dibromomethane rCBr 1.925 ±0.002 1.944 0.019 1 4
LiF lithium fluoride rLiF 1.564 ±0.000 1.583 0.019 1 2
ClO Monochlorine monoxide rClO 1.596 ±0.001 1.615 0.019 1 2
CSe Carbon monoselenide rC=Se 1.676 ±0.000 1.696 0.020 1 2
SCSe Carbon sulfide selenide rC=S 1.553 ±0.002 1.573 0.020 1 2
CHF3 Methane, trifluoro- rCF 1.328 ±0.003 1.349 0.020 1 3
SiH+ silicon monohydride cation rSiH 1.504   1.524 0.020 1 2
CH2Cl2 Methylene chloride rCCl 1.767 ±0.002 1.789 0.022 1 4
CH2F2 Methane, difluoro- rCF 1.351 ±0.001 1.373 0.022 1 4
CH3Br methyl bromide rCBr 1.934 ±0.000 1.957 0.023 1 2
C2H Ethynyl radical rCH 1.047   1.072 0.026 1 3
C3O2 Carbon suboxide rC=O 1.146   1.173 0.027 2 4
He2+ helium diatomic cation rHeHe 1.081 ±0.001 1.110 0.030 1 2
BrO Bromine monoxide rOBr 1.718   1.747 0.030 1 2
PN Phosphorus mononitride rP#N 1.491   1.521 0.030 1 2
C2H6O2S Dimethyl sulfone rCS 1.777 ±0.006 1.808 0.031 1 4
LiCl lithium chloride rLiCl 2.021 ±0.000 2.051 0.031 1 2
C3O2 Carbon suboxide rC=C 1.251   1.284 0.033 1 2
HOCl hypochlorous acid rClO 1.697 ±0.001 1.731 0.033 1 3
As4 Arsenic tetramer rAsAs 2.435   2.469 0.034 1 2
SeCl2 Selenium Dichloride rClSe 2.157 ±0.003 2.191 0.034 1 2
GeBr4 Germanium tetrabromide rGeBr 2.272 ±0.001 2.306 0.034 1 2
PS phosphorus sulfide rP=S 1.900   1.935 0.035 1 2
GaF Gallium monofluoride rFGa 1.774 ±0.000 1.809 0.035 1 2
LiBr Lithium Bromide rLiBr 2.170 ±0.000 2.205 0.035 1 2
GeS Germanium monosulfide rS=Ge 2.012 ±0.000 2.047 0.035 1 2
Se2 Selenium diatomic rSe=Se 2.166 ±0.001 2.201 0.035 1 2
BrF Bromine monofluoride rFBr 1.759 ±0.000 1.795 0.036 1 2
SO+ sulfur monoxide cation rO=S 1.424   1.460 0.036 1 2
GeO Germanium monoxide rOGe 1.625   1.662 0.037 1 2
FNO2 Nitryl fluoride rNF 1.467 ±0.015 1.505 0.038 1 2
SiS silicon monosulfide rSiS 1.929 ±0.000 1.968 0.038 1 2
GeF+ Germanium monofluoride cation rFGe 1.665 ±0.000 1.705 0.040 1 2
GeH3F monofluorogermane rGeF 1.731 ±0.000 1.771 0.040 1 2
SeO Selenium monoxide rSeO 1.639 ±0.001 1.680 0.041 1 2
NCl nitrogen monochloride rNCl 1.611 ±0.000 1.652 0.042 1 2
PF5 Phosphorus pentafluoride rFP 1.577   1.619 0.042 1 5
SeO2 Selenium dioxide rSeO 1.607 ±0.001 1.650 0.043 1 2
GeF Germanium monofluoride rFGe 1.745   1.788 0.043 1 2
OPCl Phosphorus oxychloride rP=O 1.462 ±0.011 1.507 0.045 1 2
ClF Chlorine monofluoride rFCl 1.628 ±0.000 1.674 0.046 1 2
AlF Aluminum monofluoride rAlF 1.654 ±0.000 1.702 0.047 1 2
Br2 Bromine diatomic rBrBr 2.281   2.329 0.047 1 2
S2 Sulfur diatomic rS=S 1.889   1.937 0.048 1 2
SiO Silicon monoxide rSiO 1.510 ±0.000 1.557 0.048 1 2
BrCl Bromine monochloride rClBr 2.136 ±0.000 2.184 0.048 1 2
CFCl chlorofluoromethylene rCCl 1.714   1.762 0.048 1 3
SiH2Cl2 dichlorosilane rSiCl 2.033 ±0.003 2.083 0.050 1 4
SiH3Cl chlorosilane rSiCl 2.051   2.100 0.050 1 2
PO Phosphorus monoxide rP=O 1.476   1.527 0.051 1 2
SiBr+ Silicon monobromide cation rSiBr 2.095 ±0.000 2.147 0.051 1 2
SCl sulfur monochloride rSCl 1.975   2.027 0.052 1 2
PF5 Phosphorus pentafluoride rPF 1.534   1.587 0.053 1 2
GeCl Germanium monochloride rClGe 2.164 ±0.000 2.217 0.053 1 2
AlNC Aluminum isocyanide rAlN 1.855 ±0.005 1.908 0.053 1 2
SF Monosulfur monofluoride rSF 1.599   1.654 0.054 1 2
SO Sulfur monoxide rS=O 1.481   1.536 0.055 1 2
Cl2+ chlorine diatomic cation rClCl 1.892   1.947 0.055 1 2
GaAs Gallium arsenide rGa#As 2.530 ±0.020 2.586 0.056 1 2
SOF4 Sulfur tetrafluoride oxide rFS 1.596 ±0.003 1.652 0.056 1 3
SSO Disulfur monoxide rS=S 1.884   1.942 0.058 2 3
SiH3F monofluorosilane rSiF 1.595   1.654 0.059 1 2
SF4 Sulfur tetrafluoride rSF 1.646 ±0.003 1.706 0.060 1 2
SiCl Clorosilylidyne rSiCl 2.061 ±0.000 2.122 0.060 1 2
GaBr Gallium monobromide rGaBr 2.352 ±0.000 2.414 0.062 1 2
SSO Disulfur monoxide rS=O 1.456   1.518 0.062 1 2
HSiCl Chlorosilylene rSiCl 2.067 ±0.003 2.130 0.063 1 2
C2H6O2S Dimethyl sulfone rS=O 1.431 ±0.004 1.494 0.063 1 2
SF4 Sulfur tetrafluoride rSF 1.545 ±0.003 1.608 0.063 1 4
SiF2 Silicon difluoride rFSi 1.590 ±0.000 1.655 0.064 1 2
SiF silicon monofluoride rSiF 1.604   1.669 0.065 1 2
PF2 Phosphorus difluoride rPF 1.579   1.644 0.065 1 2
C4H8O2 Ethyl acetate rCO 1.448   1.515 0.067 5 6
OPCl Phosphorus oxychloride rPCl 2.059 ±0.004 2.126 0.067 1 3
SOF4 Sulfur tetrafluoride oxide rFS 1.539 ±0.003 1.607 0.068 1 5
AlBr Aluminum monobromide rAlBr 2.295   2.368 0.073 1 2
ClOF3 Chlorine trifluoride oxide rFCl 1.713 ±0.003 1.792 0.079 1 4
ClOF3 Chlorine trifluoride oxide rFCl 1.603 ±0.004 1.710 0.107 1 3
C4H10O Methyl propyl ether rCH 1.099   1.417 0.318 1 2
222 molecules.