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Release 22May 2022
NIST Standard Reference Database 101
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IV.D.8.

Average Bond Length Differences by Model Chemistry

Calculated at PBEPBE/aug-cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental unc. Calculated Difference atom1 atom2
C4H10O Methyl propyl ether rCC 1.530   1.100 -0.430 5 13
TiCl Titanium Monochloride rClTi 2.265 ±0.000 2.220 -0.044 1 2
C2Cl2 dichloroacetylene rC#C 1.246 ±0.030 1.212 -0.034 1 2
CH2ClCH2Cl Ethane, 1,2-dichloro- rCC 1.531   1.513 -0.018 1 2
CH2ClCH2Cl Ethane, 1,2-dichloro- rCH 1.112   1.095 -0.017 1 5
ScH Scandium monohydride rScH 1.775 ±0.000 1.758 -0.017 1 2
C5H6 Propellane rCC 1.596 ±0.005 1.579 -0.017 2 5
C2H2O2 Ethanedial rCH 1.132   1.117 -0.015 1 3
CH3CH2CH2CH3 Butane rCH 1.117   1.103 -0.014 1 5
C4H8O2 Ethyl acetate rCH 1.105   1.094 -0.011 1 7
C3H8O2 1,3-Propanediol rOH 0.980   0.970 -0.010 6 8
N(CH3)3 Trimethylamine rCH 1.109   1.099 -0.010 2 8
LiOH lithium hydroxide rOH 0.969   0.959 -0.010 1 3
C3H6O Propylene oxide rCC 1.513   1.503 -0.010 2 6
CH3COCl Acetyl Chloride rCH 1.105   1.096 -0.009 2 5
CH3COCl Acetyl Chloride rCC 1.506   1.497 -0.009 1 2
CH3NC methyl isocyanide rCN 1.426 ±0.003 1.418 -0.008 1 2
C3F6 hexafluoropropene rCF 1.329 ±0.003 1.321 -0.008 1 4
C5H8 Ethenylcyclopropane rCH 1.099   1.092 -0.007 1 6
CH2O2 Dioxirane rOO 1.516 ±0.003 1.509 -0.007 4 5
C10H8 Azulene rC:C 1.414   1.408 -0.007 7 9
C2H Ethynyl radical rC#C 1.217   1.211 -0.006 1 2
CH3CH2CHO Propanal rCH 1.103   1.098 -0.005 1 6
CH2CCHCH3 1,2-Butadiene rC=C 1.314   1.309 -0.005 1 2
C5H6 Propellane rCC 1.525 ±0.002 1.521 -0.004 1 2
B2H6 Diborane rBH 1.200   1.196 -0.004 1 5
CH3NH2 methyl amine rCN 1.471 ±0.003 1.467 -0.004 1 2
C5H8 Ethenylcyclopropane rCC 1.475   1.472 -0.003 1 2
CH3ONO Methyl nitrite rCH 1.102   1.100 -0.002 1 4
C3H7SH 1-Propanethiol rCC 1.529   1.527 -0.002 7 10
C4H6 Bicyclo[1.1.0]butane rCC 1.497   1.495 -0.002 1 2
CH3CH2CHO Propanal rCC 1.509   1.507 -0.002 2 3
CrH Chromium hydride rHCr 1.655 ±0.001 1.653 -0.002 1 2
ClO Monochlorine monoxide rClO 1.596 ±0.001 1.595 -0.001 1 2
C4H8O2 Ethyl acetate rCC 1.515   1.514 -0.001 5 6
C8H8 cubane rCH 1.097   1.096 -0.001 1 9
C2H3Cl Ethene, chloro- rCH 1.090   1.089 -0.001 1 4
LiNH2 lithium amide rLiN 1.736 ±0.003 1.735 -0.001 1 2
C4H6 Cyclobutene rCC 1.517   1.516 -0.001 1 3
C3H4O Cyclopropanone rCC 1.575   1.574 -0.001 3 4
CH2CHCH2CH3 1-Butene rCC 1.536   1.536 0.000 1 2
CH3CH2CHO Propanal rCC 1.523   1.523 0.000 1 2
CH3ONO Methyl nitrite rCO 1.437   1.437 0.000 1 2
CH3CH2CH2CH3 Butane rCC 1.531   1.531 0.000 1 2
CH2 Methylene rCH 1.085   1.085 0.000 1 2
C4H8O2 Ethyl acetate rCC 1.508   1.508 0.000 1 2
CH3CH2OH Ethanol rCH 1.098   1.098 0.000 1 6
B2H6 Diborane rBH 1.320   1.321 0.001 1 3
CH2PH Phosphaethene rCH 1.090 ±0.015 1.091 0.001 1 3
CH2NH Methanimine rCH 1.103   1.104 0.001 1 3
CH3CH2CHO Propanal rCH 1.105   1.106 0.001 2 8
C10H8 Azulene rC:C 1.398   1.399 0.001 1 3
CH3CH(CH3)CH3 Isobutane rCH 1.100   1.101 0.001 3 6
CH3OC2H5 Ethane, methoxy- rCO 1.415 ±0.005 1.416 0.001 1 2
C3H6O 2-Propen-1-ol rCH 1.091 ±0.010 1.092 0.001 3 9
CH3CH2CHO Propanal rCH 1.096   1.098 0.002 1 5
C2H2+ acetylene cation rC=C 1.253 ±0.001 1.255 0.002 1 2
F2 Fluorine diatomic rFF 1.412   1.414 0.002 1 2
C10H8 Azulene rC:C 1.405 ±0.001 1.407 0.002 2 9
CH3ONO Methyl nitrite rN=O 1.182   1.184 0.002 6 7
HClO4 perchloric acid rOH 0.980   0.982 0.002 3 6
C3H6O 2-Propen-1-ol rCH 1.092 ±0.010 1.094 0.002 2 7
CH2PH Phosphaethene rCH 1.090 ±0.015 1.092 0.002 1 4
NH4+ ammonium cation rHN 1.029 ±0.000 1.031 0.002 1 2
CH3NH2 methyl amine rNH 1.018 ±0.001 1.021 0.002 2 6
CN Cyano radical rC#N 1.172   1.175 0.003 1 2
CH3NHCH3 Dimethylamine rCH 1.098   1.101 0.003 3 7
C2H2O2 Ethanedial rCC 1.526   1.529 0.003 1 2
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.097   1.100 0.003 5 6
HeH+ Helium hydride cation rHHe 0.790   0.793 0.003 1 2
CH2C(CH3)CH3 1-Propene, 2-methyl- rCH 1.088   1.091 0.003 2 3
H2CSe Selenoformaldehyde rHC 1.090   1.094 0.003 1 3
CHF2Cl difluorochloromethane rCF 1.350 ±0.010 1.353 0.003 1 4
HCCl Chloromethylene rCH 1.119 ±0.036 1.122 0.003 1 3
H2Cl+ dihydrogen monochloride cation rHCl 1.321 ±0.000 1.324 0.003 1 2
CH2FCl fluorochloromethane rCF 1.370 ±0.001 1.374 0.004 1 2
CH3COCl Acetyl Chloride rC=O 1.187   1.191 0.004 1 3
FNO2 Nitryl fluoride rN=O 1.180 ±0.005 1.184 0.004 1 3
CH3CCH propyne rCH 1.096   1.100 0.004 1 5
HOCl hypochlorous acid rOH 0.973 ±0.002 0.977 0.004 1 2
CH3NC methyl isocyanide rCH 1.094   1.098 0.004 1 4
CH3ONO Methyl nitrite rCH 1.090   1.094 0.004 1 3
CH2CO Ketene rCH 1.083   1.087 0.004 1 4
CH3NO nitrosomethane rCH 1.094   1.098 0.004 1 4
NO Nitric oxide rN=O 1.154 ±0.000 1.158 0.004 1 2
NO+ nitric oxide cation rN=O 1.066   1.070 0.005 1 2
C2H2 Acetylene rC#C 1.203   1.207 0.005 1 2
N3 azide radical rNN 1.181   1.186 0.005 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.093 ±0.006 1.098 0.005 4 8
HNCNH diiminomethane rC=N 1.224 ±0.001 1.229 0.005 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.094 ±0.005 1.099 0.005 4 10
C3H3NO Oxazole rCO 1.370 ±0.002 1.375 0.005 1 5
C3H6O 2-Propen-1-ol rCH 1.102 ±0.020 1.107 0.005 1 6
N2 Nitrogen diatomic rN#N 1.098   1.103 0.005 1 2
CH3CHS Thioacetaldehyde rCH 1.090   1.095 0.005 2 5
CH3CHS Thioacetaldehyde rCH 1.098   1.104 0.006 2 6
C4H8 cyclobutane rCH 1.093   1.099 0.006 1 5
CH3OCHO methyl formate rCH 1.101   1.107 0.006 3 8
C10H8 naphthalene rC:C 1.410   1.416 0.006 2 3
C2H2ClF 1-chloro-1-fluoroethylene rCH 1.082 ±0.001 1.088 0.006 2 5
CH2FCl fluorochloromethane rCH 1.090 ±0.010 1.096 0.006 1 4
C3H8 Propane rCH 1.096   1.102 0.006 1 4
C3H3NO Oxazole rCO 1.357 ±0.003 1.363 0.006 1 2
CN- cyanide anion rC#N 1.177 ±0.004 1.183 0.006 1 2
CH3OCH3 Dimethyl ether rCO 1.411 ±0.001 1.417 0.006 1 2
C3H6 Cyclopropane rCH 1.083   1.089 0.006 1 4
C2H5F fluoroethane rCH 1.095 ±0.007 1.101 0.006 1 4
CH3OC2H5 Ethane, methoxy- rCH 1.092 ±0.007 1.098 0.006 4 11
C4H6 Cyclobutene rCH 1.094   1.100 0.006 3 7
C2H5F fluoroethane rCC 1.505 ±0.007 1.511 0.006 1 2
NO- nitric oxide anion rN=O 1.258 ±0.010 1.265 0.007 1 2
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.092   1.099 0.007 1 3
O2+ diatomic oxygen cation rOO 1.116   1.123 0.007 1 2
CH2Cl2 Methylene chloride rCH 1.085 ±0.002 1.092 0.007 1 2
CH3CHClCH3 Propane, 2-chloro- rCH 1.091   1.098 0.007 2 5
CH2CHCH2CH3 1-Butene rCC 1.493   1.500 0.007 2 3
ClCN chlorocyanogen rC#N 1.161   1.167 0.007 2 3
CH3CH2CHO Propanal rCH 1.115   1.122 0.007 3 10
C4H8 cyclobutane rCH 1.091   1.098 0.007 1 6
HO2 Hydroperoxy radical rOO 1.331   1.338 0.007 1 2
LiOH lithium hydroxide rLiO 1.582   1.589 0.007 1 2
C2H2 Acetylene rCH 1.063   1.070 0.007 1 3
FO Oxygen monofluoride rFO 1.354   1.361 0.007 1 2
LiCl lithium chloride rLiCl 2.021 ±0.000 2.028 0.007 1 2
H2CSe Selenoformaldehyde rC=Se 1.753   1.760 0.007 1 2
CH3CH(CH3)CH3 Isobutane rCH 1.092   1.100 0.008 3 9
CH3OCHO methyl formate rCH 1.086   1.094 0.008 1 5
CH3CHO Acetaldehyde rCH 1.114   1.122 0.008 1 4
CH3OCH3 Dimethyl ether rCH 1.099 ±0.001 1.107 0.008 2 6
ClCN chlorocyanogen rCCl 1.629   1.637 0.008 1 2
CO+ carbon monoxide cation rC=O 1.115 ±0.000 1.123 0.008 1 2
C2H5N Aziridine rCH 1.083   1.091 0.008 3 5
C3H6 Cyclopropane rCC 1.501   1.509 0.008 1 2
C2H5N Aziridine rCH 1.084   1.092 0.008 3 6
CH3OC2H5 Ethane, methoxy- rCH 1.099 ±0.007 1.107 0.008 1 6
SiH2Cl2 dichlorosilane rSiH 1.480 ±0.015 1.488 0.008 1 2
C2H5F fluoroethane rCH 1.090 ±0.007 1.098 0.008 2 7
C10H8 Azulene rCH 1.084   1.092 0.008 4 14
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.090   1.098 0.008 9 11
C4H6 Cyclobutene rCH 1.083   1.091 0.008 1 5
C10H8 Azulene rCH 1.080   1.088 0.008 9 17
H2CS Thioformaldehyde rC=S 1.611   1.619 0.008 1 2
CH2O2 Dioxirane rCH 1.090 ±0.002 1.099 0.008 1 2
C3H7SH 1-Propanethiol rCH 1.090   1.098 0.008 8 10
CCl2O Phosgene rC=O 1.177   1.185 0.008 1 2
CHF3 Methane, trifluoro- rCH 1.091 ±0.014 1.099 0.008 1 2
BH3 boron trihydride rBH 1.190   1.199 0.009 1 2
OCSe Carbonyl selenide rC=O 1.159   1.167 0.009 1 2
ArH+ Argon hydride cation rArH 1.292 ±0.000 1.301 0.009 1 2
HCCCN Cyanoacetylene rCH 1.062 ±0.001 1.071 0.009 4 5
CH3NO nitrosomethane rCH 1.092   1.101 0.009 1 5
CH4 Methane rCH 1.087 ±0.001 1.096 0.009 1 2
C3H4 cyclopropene rCH 1.088   1.097 0.009 1 6
OCSe Carbonyl selenide rC=Se 1.709   1.718 0.009 1 3
C2H5F fluoroethane rCH 1.091 ±0.007 1.100 0.009 2 6
CH3CHClCH3 Propane, 2-chloro- rCH 1.092   1.101 0.009 3 6
CH2CHF Ethene, fluoro- rCH 1.082   1.091 0.009 1 4
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.089   1.098 0.009 9 10
CH3CH2Cl Ethyl chloride rCH 1.086   1.095 0.009 2 7
CO Carbon monoxide rC#O 1.128 ±0.000 1.137 0.009 1 2
CH3OC2H5 Ethane, methoxy- rCH 1.100 ±0.003 1.109 0.009 3 8
LiH Lithium Hydride rLiH 1.595 ±0.000 1.604 0.009 1 2
C3H7SH 1-Propanethiol rCH 1.092   1.101 0.009 5 7
CH3SeH Methane selenol rSeH 1.473 ±0.020 1.482 0.009 1 3
C3H6O 2-Propen-1-ol rCH 1.096 ±0.030 1.105 0.009 1 5
C3H3NO Oxazole rCH 1.073 ±0.001 1.083 0.009 5 8
D2 Deuterium diatomic rDD 0.742   0.751 0.009 1 2
BN boron nitride rB=N 1.325   1.334 0.009 1 2
H2 Hydrogen diatomic rHH 0.741   0.751 0.009 1 2
HD Deuterium hydride rDH 0.741   0.751 0.009 1 2
C3H3NO Oxazole rCH 1.075 ±0.001 1.085 0.009 4 7
CH2O2 Dioxirane rCO 1.388 ±0.004 1.397 0.009 1 4
CH3CCH propyne rCH 1.060   1.070 0.010 3 4
HSe Selenium monohydride rSeH 1.475 ±0.010 1.485 0.010 1 2
BF Boron monofluoride rBF 1.267 ±0.000 1.276 0.010 1 2
CH3CHO Acetaldehyde rCH 1.086   1.096 0.010 2 5
CH2CO Ketene rC=O 1.162   1.172 0.010 2 3
CH3OC2H5 Ethane, methoxy- rCH 1.089 ±0.008 1.099 0.010 4 10
HF+ hydrogen fluoride cation rHF 1.014   1.024 0.010 1 2
C2H3Cl Ethene, chloro- rCH 1.079   1.089 0.010 2 5
C3H3NO Oxazole rCH 1.075 ±0.001 1.085 0.010 2 6
CH3Br methyl bromide rCH 1.082 ±0.001 1.092 0.010 1 3
C4H6 Methylenecyclopropane rCC 1.457   1.467 0.010 2 5
CH3CH2Cl Ethyl chloride rCH 1.090   1.101 0.010 1 3
HCCl Chloromethylene rCCl 1.696 ±0.003 1.707 0.010 1 2
OH- hydroxide anion rOH 0.964   0.974 0.010 1 2
COBr2 Carbonic dibromide rC=O 1.172 ±0.003 1.182 0.011 1 2
C2H2+ acetylene cation rCH 1.077 ±0.005 1.088 0.011 1 3
BeO beryllium oxide rBe=O 1.331   1.342 0.011 1 2
HS+ sulfur monohydride cation rSH 1.374   1.385 0.011 1 2
CH3CH2OH Ethanol rCH 1.088   1.099 0.011 1 5
LiBr Lithium Bromide rLiBr 2.170 ±0.000 2.181 0.011 1 2
NaH sodium hydride rNaH 1.887 ±0.000 1.898 0.011 1 2
CH3OC2H5 Ethane, methoxy- rCH 1.086 ±0.010 1.097 0.011 1 5
CH3OCHO methyl formate rCO 1.437   1.448 0.011 1 2
CF Fluoromethylidyne rCF 1.276   1.287 0.011 1 2
C3H4 cyclopropene rCH 1.072   1.083 0.011 2 4
BeH2 beryllium dihydride rBeH 1.326 ±0.000 1.338 0.011 1 2
CHONH2 formamide rNH 1.001   1.012 0.011 3 6
C3F6 hexafluoropropene rC=C 1.329 ±0.003 1.340 0.011 1 2
BO boron monoxide rB=O 1.205   1.216 0.011 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.092   1.103 0.011 1 3
CH3CHFCH3 2-Fluoropropane rCH 1.088 ±0.006 1.099 0.011 4 6
NSe Nitrogen monoselenide rN=Se 1.652   1.663 0.011 1 2
SCSe Carbon sulfide selenide rC=S 1.553 ±0.002 1.564 0.011 1 2
AsH Arsenic monohydride rAsH 1.535 ±0.001 1.546 0.011 1 2
CH3NC methyl isocyanide rC#N 1.166 ±0.003 1.177 0.011 2 3
CH2CHF Ethene, fluoro- rCH 1.077   1.089 0.012 2 5
CH3CHS Thioacetaldehyde rCH 1.089   1.101 0.012 1 4
CH3OCH3 Dimethyl ether rCH 1.085 ±0.001 1.097 0.012 2 4
C2H5F fluoroethane rCF 1.398 ±0.007 1.410 0.012 1 3
C10H8 Azulene rCH 1.081   1.093 0.012 1 11
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.087   1.099 0.012 1 2
SiC silicon monocarbide rCSi 1.722   1.734 0.012 1 2
C10H8 Azulene rCH 1.083   1.095 0.012 5 15
HNCO Isocyanic acid rC=O 1.164   1.176 0.012 3 4
C3H6O 2-Propen-1-ol rCH 1.078 ±0.010 1.090 0.012 3 8
H2O Water rOH 0.958 ±0.000 0.970 0.012 1 2
O2 Oxygen diatomic rO=O 1.208   1.220 0.012 1 2
SCSe Carbon sulfide selenide rC=Se 1.695 ±0.002 1.708 0.013 1 3
C2 Carbon diatomic rC=C 1.243   1.255 0.013 1 2
C4H8O2 Ethyl acetate rC=O 1.203   1.216 0.013 2 4
BeH beryllium monohydride rBeH 1.343   1.356 0.013 1 2
CH3NHCH3 Dimethylamine rCH 1.098   1.111 0.013 3 5
CH3CH2O Ethoxy radical rCH 1.085   1.098 0.013 1 5
CSe2 Carbon diselenide rC=Se 1.692 ±0.000 1.706 0.013 1 2
CHONH2 formamide rNH 1.001   1.015 0.014 3 5
PN Phosphorus mononitride rP#N 1.491   1.505 0.014 1 2
CH3NH2 methyl amine rCH 1.093 ±0.000 1.107 0.014 1 3
CH3CH2O Ethoxy radical rCH 1.086   1.100 0.014 1 4
BCl boron monochloride rBCl 1.719 ±0.000 1.734 0.014 1 2
CH3NHCH3 Dimethylamine rCH 1.084   1.098 0.014 3 9
CH3CSNH2 Ethanethioamide rC=S 1.647 ±0.002 1.661 0.014 1 2
C10H8 Azulene rC:C 1.484   1.499 0.015 7 8
DF Hydrofluoric acid-d rDF 0.917 ±0.000 0.932 0.015 1 2
OH Hydroxyl radical rOH 0.970   0.984 0.015 1 2
BrO Bromine monoxide rOBr 1.718   1.732 0.015 1 2
CS carbon monosulfide rC#S 1.535   1.550 0.015 1 2
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.819 0.015 8 9
HOBr Hypobromous acid rOH 0.961   0.976 0.015 1 2
HS- mercapto anion rSH 1.343   1.359 0.015 1 2
HF Hydrogen fluoride rHF 0.917 ±0.000 0.932 0.015 1 2
C10H8 Azulene rC:C 1.377   1.393 0.016 5 7
P2H4 Diphosphine rPH 1.417   1.433 0.016 1 3
CH3OCHO methyl formate rCO 1.334   1.350 0.016 2 3
C2H3 vinyl rCH 1.085   1.101 0.016 2 4
SiH4 Silane rSiH 1.480 ±0.000 1.496 0.016 1 2
As2 Arsenic diatomic rAs#As 2.103   2.119 0.016 1 2
CSe Carbon monoselenide rC=Se 1.676 ±0.000 1.692 0.016 1 2
C4H8O2 Ethyl acetate rCO 1.345   1.361 0.016 2 3
CH2F2 Methane, difluoro- rCH 1.084 ±0.003 1.100 0.016 1 2
CH Methylidyne rCH 1.120   1.136 0.016 1 2
NS Mononitrogen monosulfide rNS 1.497 ±0.000 1.513 0.016 1 2
F2O Difluorine monoxide rFO 1.405   1.421 0.016 1 2
DCl Hydrochloric acid-d rDCl 1.275 ±0.000 1.291 0.017 1 2
LiO lithium oxide rLiO 1.688   1.705 0.017 1 2
HCl Hydrogen chloride rHCl 1.275 ±0.000 1.291 0.017 1 2
NH2SH Thiohydroxylamine rSH 1.344 ±0.029 1.361 0.017 2 3
CH3OC2H5 Ethane, methoxy- rCO 1.407 ±0.004 1.424 0.017 2 3
NH2CONH2 Urea rNH 0.998   1.015 0.017 4 8
P2 Phosphorus diatomic rP#P 1.893   1.911 0.017 1 2
C3H7N Cyclopropylamine rCH 1.080   1.097 0.017 1 2
SiH3F monofluorosilane rSiH 1.476   1.494 0.017 1 3
SiH3Cl chlorosilane rSiH 1.475   1.493 0.018 1 3
HO2 Hydroperoxy radical rOH 0.971   0.988 0.018 1 3
HBr hydrogen bromide rHBr 1.414 ±0.000 1.432 0.018 1 2
HS Mercapto radical rSH 1.341   1.359 0.018 1 2
P2H4 Diphosphine rPH 1.414   1.432 0.018 1 4
SiHCl3 Trichlorosilane rSiH 1.464   1.482 0.018 1 2
CH2Cl2 Methylene chloride rCCl 1.767 ±0.002 1.786 0.019 1 4
NCl nitrogen monochloride rNCl 1.611 ±0.000 1.629 0.019 1 2
BH Boron monohydride rBH 1.232   1.251 0.019 1 2
BF3 Borane, trifluoro- rBF 1.307   1.326 0.019 1 2
NH3BF3 Amminetrifluoroboron rBN 1.673   1.693 0.020 1 2
KrH+ Protonated Krypton rHKr 1.421 ±0.000 1.441 0.020 1 2
CH3CH2OH Ethanol rCH 1.086   1.106 0.020 2 8
CH2Br2 dibromomethane rCBr 1.925 ±0.002 1.945 0.020 1 4
PH phosphorus monohydride rPH 1.422   1.442 0.020 1 2
LiF lithium fluoride rLiF 1.564 ±0.000 1.584 0.020 1 2
H2Se Hydrogen selenide rSeH 1.460   1.480 0.020 1 2
CH3Br methyl bromide rCBr 1.934 ±0.000 1.954 0.020 1 2
CH2ClCH2Cl Ethane, 1,2-dichloro- rCCl 1.790   1.810 0.020 1 3
HBr+ hydrogen bromide cation rHBr 1.448   1.469 0.021 1 2
GeO Germanium monoxide rOGe 1.625   1.646 0.021 1 2
HCl+ hydrogen chloride cation rHCl 1.315   1.336 0.022 1 2
CHBr3 bromoform rCBr 1.924 ±0.005 1.946 0.022 1 3
AsF5 Arsenic pentafluoride rAsF 1.711 ±0.005 1.733 0.022 1 5
HOCl hypochlorous acid rClO 1.697 ±0.001 1.719 0.022 1 3
CH2F2 Methane, difluoro- rCF 1.351 ±0.001 1.373 0.022 1 4
NaLi lithium sodium rLiNa 2.889   2.911 0.022 1 2
As4 Arsenic tetramer rAsAs 2.435   2.457 0.022 1 2
HSiCl Chlorosilylene rSiH 1.525 ±0.005 1.547 0.022 1 3
PS phosphorus sulfide rP=S 1.900   1.922 0.022 1 2
HOBr Hypobromous acid rBrO 1.834   1.857 0.023 2 3
SeCl2 Selenium Dichloride rClSe 2.157 ±0.003 2.180 0.023 1 2
CHF3 Methane, trifluoro- rCF 1.328 ±0.003 1.352 0.023 1 3
SiP Silicon monophosphide rSiP 2.078 ±0.002 2.101 0.024 1 2
SeO Selenium monoxide rSeO 1.639 ±0.001 1.663 0.024 1 2
SOCl2 thionyl chloride rS=O 1.443 ±0.006 1.467 0.024 1 2
NaCl Sodium Chloride rNaCl 2.361 ±0.000 2.385 0.024 1 2
AsH3 Arsine rAsH 1.511 ±0.000 1.536 0.025 1 2
SeO2 Selenium dioxide rSeO 1.607 ±0.001 1.632 0.025 1 2
SiH2F2 difluorosilane rSiH 1.462   1.487 0.025 1 4
C2H Ethynyl radical rCH 1.047   1.072 0.025 1 3
SiH3+ Silyl cation rSiH 1.460 ±0.010 1.486 0.026 1 2
C3H5 Allyl radical rCH 1.069   1.095 0.026 1 2
SO+ sulfur monoxide cation rO=S 1.424   1.450 0.026 1 2
CCl2O Phosgene rCCl 1.737   1.763 0.026 2 3
SiO Silicon monoxide rSiO 1.510 ±0.000 1.536 0.026 1 2
AlC Aluminum carbide rC=Al 1.955   1.981 0.026 1 2
C3O2 Carbon suboxide rC=O 1.146   1.173 0.027 2 4
N(CH3)3 Trimethylamine rCH 1.088   1.115 0.027 2 5
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.831 0.027 5 8
MgH magnesium monohydride rMgH 1.730   1.756 0.027 1 2
OPCl Phosphorus oxychloride rP=O 1.462 ±0.011 1.489 0.027 1 2
C5H8O Cyclopentanone rCC 1.504   1.531 0.027 2 3
C2Cl2 dichloroacetylene rCCl 1.612 ±0.030 1.639 0.027 1 3
GeH3F monofluorogermane rGeH 1.515 ±0.000 1.542 0.028 1 3
GeS Germanium monosulfide rS=Ge 2.012 ±0.000 2.040 0.028 1 2
PO Phosphorus monoxide rP=O 1.476   1.504 0.028 1 2
SCl sulfur monochloride rSCl 1.975   2.003 0.028 1 2
CBrClF2 Methane, bromochlorodifluoro- rCBr 1.932 ±0.004 1.960 0.028 1 2
C3O2 Carbon suboxide rC=C 1.251   1.279 0.028 1 2
GeH germylidene rGeH 1.588   1.616 0.028 1 2
AlNC Aluminum isocyanide rAlN 1.855 ±0.005 1.883 0.028 1 2
SiH Silylidyne rSiH 1.520   1.548 0.028 1 2
B2 Boron diatomic rBB 1.590   1.618 0.028 1 2
SiS silicon monosulfide rSiS 1.929 ±0.000 1.958 0.029 1 2
HSSSH trisulfane rSS 2.054 ±0.000 2.083 0.029 1 2
BrF Bromine monofluoride rFBr 1.759 ±0.000 1.788 0.029 1 2
BrCl Bromine monochloride rClBr 2.136 ±0.000 2.165 0.029 1 2
Se2 Selenium diatomic rSe=Se 2.166 ±0.001 2.195 0.029 1 2
CCl2 dichloromethylene rCCl 1.711   1.741 0.029 1 2
SiH3Cl chlorosilane rSiCl 2.051   2.080 0.030 1 2
CH2FCl fluorochloromethane rCCl 1.762 ±0.000 1.792 0.030 1 3
Br2 Bromine diatomic rBrBr 2.281   2.311 0.030 1 2
C2H6O2S Dimethyl sulfone rCS 1.777 ±0.006 1.808 0.031 1 4
ClF Chlorine monofluoride rFCl 1.628 ±0.000 1.660 0.032 1 2
S2 Sulfur diatomic rS=S 1.889   1.921 0.032 1 2
Cl2 Chlorine diatomic rClCl 1.988   2.020 0.032 1 2
SiH+ silicon monohydride cation rSiH 1.504   1.537 0.033 1 2
SF Monosulfur monofluoride rSF 1.599   1.633 0.034 1 2
SO Sulfur monoxide rS=O 1.481   1.515 0.034 1 2
PF5 Phosphorus pentafluoride rFP 1.577   1.611 0.034 1 5
HClO4 perchloric acid rO=Cl 1.414 ±0.001 1.448 0.034 1 2
SiCl Clorosilylidyne rSiCl 2.061 ±0.000 2.096 0.034 1 2
SiH2Cl2 dichlorosilane rSiCl 2.033 ±0.003 2.068 0.035 1 4
SCl2 Sulfur dichloride rSCl 2.013 ±0.001 2.047 0.035 1 2
CH3CH2O Ethoxy radical rCH 1.088   1.123 0.035 2 7
NaF sodium fluoride rNaF 1.926 ±0.000 1.961 0.035 1 2
AsF Arsenic monofluoride rFAs 1.736 ±0.001 1.771 0.035 1 2
AlH aluminum monohydride rAlH 1.648   1.683 0.036 1 2
GeCl Germanium monochloride rClGe 2.164 ±0.000 2.199 0.036 1 2
SiH3F monofluorosilane rSiF 1.595   1.630 0.036 1 2
GeH3F monofluorogermane rGeF 1.731 ±0.000 1.767 0.036 1 2
SSO Disulfur monoxide rS=O 1.456   1.493 0.036 1 2
SiHCl3 Trichlorosilane rSiCl 2.020   2.057 0.037 1 3
F2SO Thionyl Fluoride rO=S 1.413 ±0.000 1.450 0.037 1 2
GeF+ Germanium monofluoride cation rFGe 1.665 ±0.000 1.703 0.037 1 2
Cl2+ chlorine diatomic cation rClCl 1.892   1.929 0.037 1 2
GeF Germanium monofluoride rFGe 1.745   1.783 0.037 1 2
CH3COCl Acetyl Chloride rCCl 1.798   1.836 0.038 1 4
GeBr4 Germanium tetrabromide rGeBr 2.272 ±0.001 2.310 0.038 1 2
GaF Gallium monofluoride rFGa 1.774 ±0.000 1.813 0.038 1 2
SSO Disulfur monoxide rS=S 1.884   1.923 0.039 2 3
HSiCl Chlorosilylene rSiCl 2.067 ±0.003 2.107 0.040 1 2
BrF3 Bromine trifluoride rFBr 1.810 ±0.000 1.850 0.040 1 3
SiF silicon monofluoride rSiF 1.604   1.644 0.040 1 2
PF2 Phosphorus difluoride rPF 1.579   1.620 0.041 1 2
C2H6O2S Dimethyl sulfone rS=O 1.431 ±0.004 1.472 0.041 1 2
PF5 Phosphorus pentafluoride rPF 1.534   1.576 0.042 1 2
SiBr+ Silicon monobromide cation rSiBr 2.095 ±0.000 2.137 0.042 1 2
CHF2Cl difluorochloromethane rCCl 1.747 ±0.010 1.789 0.042 1 3
HNO3 Nitric acid rNO 1.406   1.448 0.042 1 2
AsF3 Arsenic trifluoride rAsF 1.706 ±0.002 1.748 0.042 1 2
AlF Aluminum monofluoride rAlF 1.654 ±0.000 1.697 0.043 1 2
GaBr Gallium monobromide rGaBr 2.352 ±0.000 2.396 0.043 1 2
AlCl Aluminum monochloride rAlCl 2.130 ±0.000 2.173 0.043 1 2
SiF2 Silicon difluoride rFSi 1.590 ±0.000 1.634 0.044 1 2
AlBr Aluminum monobromide rAlBr 2.295   2.342 0.048 1 2
OPCl Phosphorus oxychloride rPCl 2.059 ±0.004 2.106 0.048 1 3
BrF3 Bromine trifluoride rFBr 1.721   1.769 0.048 1 2
SOF4 Sulfur tetrafluoride oxide rFS 1.596 ±0.003 1.647 0.051 1 3
CH3ONO Methyl nitrite rNO 1.398   1.450 0.052 2 6
Li2 Lithium diatomic rLiLi 2.673   2.725 0.052 1 2
SF4 Sulfur tetrafluoride rSF 1.545 ±0.003 1.598 0.053 1 4
SF4 Sulfur tetrafluoride rSF 1.646 ±0.003 1.699 0.053 1 2
HClO4 perchloric acid rO=Cl 1.404 ±0.001 1.458 0.054 1 4
AsF5 Arsenic pentafluoride rAsF 1.656 ±0.004 1.711 0.055 1 2
GaAs Gallium arsenide rGa#As 2.530 ±0.020 2.587 0.057 1 2
CFCl chlorofluoromethylene rCCl 1.714   1.773 0.059 1 3
SOF4 Sulfur tetrafluoride oxide rFS 1.539 ±0.003 1.599 0.060 1 5
F2SO Thionyl Fluoride rFS 1.585 ±0.000 1.645 0.060 1 3
FNO2 Nitryl fluoride rNF 1.467 ±0.015 1.527 0.060 1 2
C4H8O2 Ethyl acetate rCO 1.448   1.514 0.066 5 6
ClOF3 Chlorine trifluoride oxide rFCl 1.713 ±0.003 1.783 0.070 1 4
HClO4 perchloric acid rOCl 1.641 ±0.002 1.723 0.082 1 3
ClOF3 Chlorine trifluoride oxide rFCl 1.603 ±0.004 1.690 0.087 1 3
He2+ helium diatomic cation rHeHe 1.081 ±0.001 1.177 0.096 1 2
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 ±0.040 2.295 0.255 1 3
C4H10O Methyl propyl ether rCH 1.099   1.417 0.318 1 2
401 molecules.