National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 18October 2016
NIST Standard Reference Database 101
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XXIOddities

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IV.D.8.

Average Bond Length Differences by Model Chemistry

Calculated at MP2/CEP-121G*

Species Name Bond type Bond Length (Å)
Experimental unc. Calculated Difference atom1 atom2
PS phosphorus sulfide rP=S 1.900   1.838 -0.062 1 2
C6H6 Fulvene rCH 1.130 ±0.030 1.088 -0.042 2 7
C5H10 2-Pentene, (E)- rCC 1.576   1.537 -0.039 11 15
CN Cyano radical rC#N 1.172   1.139 -0.033 1 2
C2H Ethynyl radical rC#C 1.217   1.187 -0.030 1 2
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.560   1.532 -0.028 3 5
C2H2O2 Ethanedial rCH 1.132   1.106 -0.026 1 3
NS Mononitrogen monosulfide rNS 1.497 ±0.000 1.472 -0.025 1 2
LiOH lithium hydroxide rLiO 1.582   1.556 -0.025 1 2
C2Cl2 dichloroacetylene rC#C 1.246 ±0.030 1.224 -0.022 1 2
C5H8 Bicyclo[2.1.0]pentane rCC 1.536   1.515 -0.021 1 5
CH2ClCH2Cl Ethane, 1,2-dichloro- rCH 1.112   1.091 -0.021 1 5
C7H16 heptane rCH 1.121 ±0.007 1.100 -0.021 1 8
Si(CH3)4 tetramethylsilane rCH 1.115 ±7.000 1.097 -0.018 2 6
CH3CH2CH2CH3 Butane rCH 1.117   1.099 -0.018 1 5
CH3OCl methyl hypochlorite rHC 1.111 ±0.018 1.093 -0.018 3 4
LiF lithium fluoride rLiF 1.564 ±0.000 1.546 -0.018 1 2
C4H5N Cyclopropanecarbonitrile rCC 1.472   1.454 -0.018 6 8
C6H5OCH3 Anisole rCO 1.399   1.382 -0.017 1 7
C5H10 2-Pentene, (Z)- rCC 1.561   1.545 -0.016 1 5
CP Carbon monophosphide rC#P 1.562   1.548 -0.014 1 2
N(CH3)3 Trimethylamine rCH 1.109   1.095 -0.014 2 8
CH3COCl Acetyl Chloride rCH 1.105   1.091 -0.014 2 5
LiO lithium oxide rLiO 1.688   1.674 -0.014 1 2
C6H8 (Z)-hexa-1,3,5-triene rCH 1.104   1.091 -0.013 1 7
C2H3N3 1H-1,2,4-Triazole rCN 1.377   1.365 -0.012 5 7
C4H4N2 Succinonitrile rCC 1.561   1.550 -0.011 1 2
MgO magnesium oxide rMgO 1.749   1.738 -0.011 1 2
B2H6 Diborane rBH 1.200   1.189 -0.011 1 5
CO+ carbon monoxide cation rC=O 1.115 ±0.000 1.105 -0.010 1 2
C5H8 Ethenylcyclopropane rCH 1.099   1.089 -0.010 1 6
CH3CH2CHO Propanal rCH 1.103   1.093 -0.010 1 6
C4H5NO 3-Methylisoxazole rCC 1.514   1.506 -0.008 1 8
NO Nitric oxide rN=O 1.154 ±0.000 1.146 -0.007 1 2
C3H8O2 1,3-Propanediol rOH 0.980   0.973 -0.007 6 8
C6H12 (E)-3-methylpent-2-ene rCC 1.551   1.544 -0.007 9 12
LiOH lithium hydroxide rOH 0.969   0.962 -0.007 1 3
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile rCC 1.514   1.507 -0.007 3 9
CH2NH Methanimine rCH 1.103   1.097 -0.006 1 3
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.530   1.524 -0.006 1 3
C4H5NO Isoxazole, 5-methyl- rCC 1.505   1.500 -0.006 1 5
CH3CH2CHO Propanal rCH 1.105   1.100 -0.005 2 8
CH2ClCH2Cl Ethane, 1,2-dichloro- rCC 1.531   1.526 -0.005 1 2
NaF sodium fluoride rNaF 1.926 ±0.000 1.921 -0.005 1 2
CH2CHCl Ethene, chloro- rCH 1.090   1.086 -0.004 1 4
CH3CH2OH Ethanol rCH 1.098   1.094 -0.004 1 6
D2 Deuterium diatomic rDD 0.742   0.737 -0.004 1 2
H2 Hydrogen diatomic rHH 0.741   0.737 -0.004 1 2
HD Deuterium hydride rDH 0.741   0.737 -0.004 1 2
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile rCC 1.518   1.514 -0.004 3 7
CH2 Methylene rCH 1.085   1.081 -0.004 1 2
CH3CH2CHO Propanal rCH 1.115   1.111 -0.004 3 10
C6H8 1,3-Cyclohexadiene rCH 1.100   1.096 -0.004 5 11
CH3CHO Acetaldehyde rCH 1.114   1.110 -0.004 1 4
C4H10O Methyl propyl ether rCH 1.107   1.103 -0.004 10 11
BN boron nitride rB=N 1.325   1.322 -0.003 1 2
CH3NO3 Methyl nitrate rCH 1.095   1.092 -0.003 5 8
CH3NHCH3 Dimethylamine rCH 1.098   1.095 -0.003 3 7
C8H8 cubane rCH 1.097   1.094 -0.003 1 9
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCH 1.087   1.084 -0.003 11 12
CH3NC methyl isocyanide rCH 1.094   1.091 -0.003 1 4
CH3OCHO methyl formate rCH 1.101   1.099 -0.002 3 8
C9H8 Indene rCC 1.415 ±0.170 1.413 -0.002 1 2
LiCl lithium chloride rLiCl 2.021 ±0.000 2.018 -0.002 1 2
CH3CH(CH3)CH3 Isobutane rCH 1.100   1.098 -0.002 3 6
CH3CCH propyne rCH 1.096   1.094 -0.002 1 5
C6H8 (Z)-hexa-1,3,5-triene rC=C 1.368   1.366 -0.002 1 2
CH2PH H2CPH rCH 1.090 ±0.015 1.088 -0.002 1 3
CH3CH2CHO Propanal rCH 1.096   1.094 -0.002 1 5
B2H6 Diborane rBH 1.320   1.318 -0.002 1 3
HS+ sulfur monohydride cation rHS 1.374   1.373 -0.001 1 2
CH2PH H2CPH rCH 1.090 ±0.015 1.089 -0.001 1 4
CH2CO Ketene rCH 1.083   1.082 -0.001 1 4
C6H12 Cyclohexane rCH 1.101   1.101 -0.001 1 7
C2H5F fluoroethane rCH 1.095 ±0.007 1.094 -0.001 1 4
CH3CHS Thioacetaldehyde rCH 1.098   1.097 -0.001 2 6
C6H8 1,3-Cyclohexadiene rCH 1.090   1.090 -0.000 1 7
CH2C(CH3)CH3 1-Propene, 2-methyl- rCH 1.088   1.088 -0.000 2 3
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.097   1.097 -0.000 5 6
C4H4N2 1,3-Diazine rCH 1.087   1.087 -0.000 1 7
C3H5ClO Oxirane, (chloromethyl)- rCC 1.475   1.475 -0.000 3 4
C4H10O Methyl propyl ether rCH 1.093   1.093 -0.000 5 6
CH2FCl fluorochloromethane rCH 1.090 ±0.010 1.090 -0.000 1 4
C6H8 1,4-Cyclohexadiene rCH 1.100   1.100 -0.000 1 11
C5H6 1-Buten-3-yne, 2-methyl- rCC 1.445   1.445 -0.000 7 8
CH3CH2SH ethanethiol rCH 1.095   1.095 0.000 1 4
CH2CHCHO Acrolein rCH 1.086 ±0.007 1.086 0.000 3 7
C3H6O Propylene oxide rCC 1.513   1.513 0.000 2 6
C3H4N2 1H-Pyrazole rCH 1.083   1.083 0.000 5 6
SiC silicon monocarbide rC-Si 1.722   1.722 0.000 1 2
C4H5N Cyclopropanecarbonitrile rCC 1.513   1.514 0.001 9 10
CH2O2 Dioxirane rCH 1.090 ±0.002 1.091 0.001 1 2
C3H4N2 1H-Pyrazole rCH 1.082   1.083 0.001 1 2
C4H6S Thiophene, 2,5-dihydro- rCH 1.095   1.096 0.001 2 6
C4H10O Methyl propyl ether rCH 1.099   1.100 0.001 1 2
C3H8 Propane rCH 1.096   1.097 0.001 1 4
C6H5OCH3 Anisole rCO 1.433   1.435 0.002 7 8
CH3OCH3 Dimethyl ether rCH 1.099 ±0.001 1.101 0.002 2 6
CH3CHS Thioacetaldehyde rCH 1.090   1.092 0.002 2 5
CH3NH2 methyl amine rNH 1.018 ±0.001 1.020 0.002 2 6
BH Boron monohydride rBH 1.232   1.234 0.002 1 2
C5H9N Pentanenitrile rCC 1.478   1.480 0.002 4 6
C3H4N2 1H-Pyrazole rCH 1.080   1.082 0.002 3 4
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.092   1.094 0.002 1 3
CH3CH2SH ethanethiol rCH 1.092   1.094 0.002 1 5
CH3NO3 Methyl nitrate rCH 1.088   1.091 0.003 5 6
C4H10O Ethoxy ethane rCH 1.100   1.103 0.003 2 6
C4H6 Cyclobutene rCH 1.094   1.097 0.003 3 7
C5H8 1,3-Butadiene, 2-methyl- rCC 1.512   1.515 0.003 2 5
CH2CHCH2CH2Cl 1-Butene, 4-chloro- rCC 1.508   1.511 0.003 2 6
C4H4N2 1,3-Diazine rC:N 1.350   1.353 0.003 3 5
CH Methylidyne rCH 1.120   1.123 0.003 1 2
C2H5N Aziridine rCH 1.083   1.086 0.003 3 5
C4H10O Methyl propyl ether rCH 1.094   1.097 0.003 13 14
CH2CHCHO Acrolein rCH 1.086 ±0.007 1.089 0.003 3 8
CH3OCHO methyl formate rCH 1.086   1.089 0.003 1 5
CH2CHCHO Acrolein rCH 1.108 ±0.005 1.111 0.003 1 5
C4H10O Propane, 2-methoxy- rCH 1.095   1.098 0.003 1 2
C3H6 Cyclopropane rCH 1.083   1.086 0.003 1 4
C4H8 cyclobutane rCH 1.093   1.096 0.003 1 5
BH3 boron trihydride rBH 1.190   1.193 0.003 1 2
C2H5F fluoroethane rCH 1.090 ±0.007 1.093 0.003 2 7
C5H8 Cyclopentene rCC 1.518   1.521 0.003 2 4
C7H16 heptane rCC 1.534   1.537 0.003 1 2
C4H10O Ethoxy ethane rCH 1.092   1.096 0.004 4 10
C4H10O Ethoxy ethane rCH 1.090   1.094 0.004 4 12
C5H10 2-Pentene, (Z)- rCH 1.092   1.096 0.004 1 2
CH2CHF Ethene, fluoro- rCH 1.082   1.086 0.004 1 4
C2H5N Aziridine rCH 1.084   1.088 0.004 3 6
CH3CH2SH ethanethiol rCH 1.090   1.094 0.004 2 7
C3H4 cyclopropene rCH 1.088   1.092 0.004 1 6
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.090   1.094 0.004 9 11
CH2CHCHO Acrolein rCH 1.084 ±0.005 1.088 0.004 2 6
C4H10O Methyl propyl ether rCH 1.091   1.095 0.004 5 8
CH3CH(CH3)CH3 Isobutane rCH 1.092   1.097 0.005 3 9
C4H8 cyclobutane rCH 1.091   1.096 0.005 1 6
CH4 Methane rCH 1.087 ±0.001 1.092 0.005 1 2
C2H5F fluoroethane rCH 1.091 ±0.007 1.096 0.005 2 6
C3H7SH 1-Propanethiol rCH 1.092   1.097 0.005 5 7
C5H5N Pyridine rC:C 1.400   1.405 0.005 2 5
C6H12 Cyclohexane rCH 1.093   1.098 0.005 1 13
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.089   1.094 0.005 9 10
C3H7SH 1-Propanethiol rCH 1.090   1.095 0.005 8 10
C6H6 Fulvene rCC 1.476 ±0.008 1.481 0.005 5 6
NH Imidogen rNH 1.036   1.042 0.005 1 2
CH3CHO Acetaldehyde rCH 1.086   1.091 0.005 2 5
CH3ONO Methyl nitrite rCH 1.102   1.107 0.005 1 4
C5H8 Cyclobutane, methylene- rCC 1.524   1.530 0.006 1 3
CH3CH2Cl Ethyl chloride rCH 1.086   1.092 0.006 2 7
SiH2Cl2 dichlorosilane rSiH 1.480 ±0.015 1.486 0.006 1 2
C3H7SH 1-Propanethiol rCC 1.529   1.535 0.006 7 10
CH3CH2Cl Ethyl chloride rCH 1.090   1.096 0.006 1 3
CH2CHCl Ethene, chloro- rCH 1.079   1.085 0.006 2 5
C2H2 Acetylene rCH 1.063   1.069 0.006 1 3
C4H6 Cyclobutene rCH 1.083   1.089 0.006 1 5
C3H8O2 Methane, dimethoxy- rCO 1.432   1.438 0.006 4 6
C4H4N2 1,3-Diazine rCH 1.082   1.089 0.007 2 8
CH3CH2CH2CH3 Butane rCC 1.531   1.538 0.007 1 2
CH3OCH3 Dimethyl ether rCH 1.085 ±0.001 1.092 0.007 2 4
HCCCN Cyanoacetylene rCH 1.062 ±0.001 1.069 0.007 4 5
C6H6 Fulvene rCH 1.080 ±0.005 1.087 0.007 5 11
CH3NHCH3 Dimethylamine rCH 1.098   1.105 0.007 3 5
HClO4 perchloric acid rHO 0.980   0.987 0.007 3 6
CH2CHF Ethene, fluoro- rCH 1.077   1.084 0.007 2 5
HO2 Hydroperoxy radical rOO 1.331   1.338 0.007 1 2
C4H10O Methyl propyl ether rCC 1.530   1.537 0.007 5 13
CH2CHCH2CH3 1-Butene rCC 1.536   1.543 0.007 1 2
CH3CH2OH Ethanol rCH 1.088   1.095 0.007 1 5
CH3CHS Thioacetaldehyde rCH 1.089   1.097 0.008 1 4
C5H10 Cyclopropane, 1,1-dimethyl- rCH 1.080   1.088 0.008 2 6
C5H10 Cyclopropane, 1,1-dimethyl- rCC 1.514   1.522 0.008 1 4
C2H3 vinyl rCH 1.085   1.093 0.008 2 4
C2H2O2 Ethanedial rCC 1.526   1.534 0.008 1 2
CH3NH2 methyl amine rCH 1.093 ±0.000 1.101 0.008 1 3
AlS Aluminum sulfide rAlS 2.029   2.037 0.008 1 2
CH2CHCHO Acrolein rC=C 1.345 ±0.003 1.353 0.008 2 3
C6H6 Fulvene rCC 1.470 ±0.004 1.478 0.008 1 3
CH2NN diazomethane rHC 1.075   1.083 0.008 1 4
C6H6 Fulvene rCH 1.078 ±0.005 1.086 0.008 3 9
CH3CCH propyne rCH 1.060   1.068 0.008 3 4
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.087   1.095 0.008 1 2
C5H8 Bicyclo[2.1.0]pentane rCC 1.565   1.573 0.008 3 4
CH3OCl methyl hypochlorite rHC 1.086 ±0.018 1.095 0.009 3 5
CH3COCl Acetyl Chloride rCC 1.506   1.515 0.009 1 2
C4H10O Ethoxy ethane rCC 1.517   1.526 0.009 2 4
C6H8 1,3-Cyclohexadiene rCC 1.466   1.475 0.009 2 3
BeH2 beryllium dihydride rHBe 1.326 ±0.000 1.336 0.009 1 2
C4H6O Cyclobutanone rCC 1.556   1.566 0.010 3 5
C2H3N3 1H-1,2,4-Triazole rC=N 1.329   1.339 0.010 1 7
CHF2Cl difluorochloromethane rCF 1.350 ±0.010 1.360 0.010 1 4
C3H4 cyclopropene rCH 1.072   1.082 0.010 2 4
CH3NH2 methyl amine rCN 1.471 ±0.003 1.481 0.010 1 2
CF3COOH trifluoroacetic acid rCC 1.546 ±0.005 1.556 0.010 1 2
CH3NHCH3 Dimethylamine rCH 1.084   1.094 0.010 3 9
DO Hydroxyl-d rDO 0.970   0.980 0.010 1 2
OH Hydroxyl radical rOH 0.970   0.980 0.010 1 2
CH3CH2CHO Propanal rCC 1.523   1.533 0.010 1 2
C5H8 Ethenylcyclopropane rCC 1.475   1.485 0.010 1 2
BeH beryllium monohydride rBeH 1.343   1.353 0.010 1 2
C6H6 Fulvene rC=C 1.349 ±0.002 1.359 0.010 1 2
CH3CH2CHO Propanal rCC 1.509   1.519 0.010 2 3
C4H4N2 1,3-Diazine rCH 1.079   1.089 0.010 3 9
CH2CCHCH3 1,2-Butadiene rC=C 1.314   1.325 0.011 1 2
AlO Aluminum monoxide rAlO 1.618   1.629 0.011 1 2
BCl boron monochloride rBCl 1.719 ±0.000 1.731 0.011 1 2
C5H7N Cyclobutanecarbonitrile rCC 1.551   1.562 0.011 3 6
C8H8 cyclooctatetraene rCC 1.470 ±0.001 1.482 0.011 1 5
C4H10O Methyl propyl ether rCC 1.516   1.527 0.011 10 13
C5H8 Bicyclo[2.1.0]pentane rCC 1.528   1.540 0.012 1 3
C4H6 Cyclobutene rCC 1.517   1.529 0.012 1 3
H2O Water rOH 0.958 ±0.000 0.970 0.012 1 2
CH3ONO Methyl nitrite rCH 1.090   1.102 0.012 1 3
PO Phosphorus monoxide rP=O 1.476   1.489 0.013 1 2
C8H8 cyclooctatetraene rCH 1.079 ±0.001 1.092 0.013 1 9
C3H7N Cyclopropylamine rCH 1.080   1.093 0.013 1 2
CFCl3 Trichloromonofluoromethane rCCl 1.764   1.777 0.013 1 3
BeCl beryllium monochloride rBeCl 1.797   1.810 0.013 1 2
HO2 Hydroperoxy radical rOH 0.971   0.984 0.013 1 3
F2 Fluorine diatomic rFF 1.412   1.425 0.013 1 2
CH3CH2OH Ethanol rCH 1.086   1.100 0.014 2 8
CH3NC methyl isocyanide rCN 1.426 ±0.003 1.440 0.014 1 2
HS Mercapto radical rSH 1.341   1.355 0.014 1 2
C5H12O Butane, 1-methoxy- rCO 1.415   1.429 0.014 3 4
C4H4N2 Succinonitrile rCC 1.465   1.479 0.014 1 3
DS Mercapto-d rSD 1.341   1.355 0.014 1 2
CH2FCl fluorochloromethane rCF 1.370 ±0.001 1.384 0.014 1 2
CH2ClCH2Cl Ethane, 1,2-dichloro- rCCl 1.790   1.804 0.014 1 3
C5H8O 2H-Pyran, 3,4-dihydro- rCC 1.516   1.530 0.014 10 13
DF Hydrofluoric acid-d rDF 0.917 ±0.000 0.932 0.014 1 2
BS boron sulfide rBS 1.609   1.624 0.014 1 2
C4H10O Methyl propyl ether rCH 1.086   1.100 0.014 1 4
C4H5N (E)-2-Butenenitrile rCC 1.432   1.447 0.015 8 10
C5H8 1,3-Butadiene, 2-methyl- rCC 1.463   1.478 0.015 2 3
DCl Hydrochloric acid-d rDCl 1.275 ±0.000 1.289 0.015 1 2
HCl Hydrogen chloride rHCl 1.275 ±0.000 1.289 0.015 1 2
MgOH magnesium hydroxide rMgO 1.767   1.782 0.015 1 2
C2HF3 Trifluoroethylene rCF 1.316 ±0.011 1.331 0.015 1 3
SiH3F monofluorosilane rSiH 1.476   1.491 0.015 1 3
HF Hydrogen fluoride rHF 0.917 ±0.000 0.932 0.015 1 2
C4H10O Methyl propyl ether rCO 1.413   1.428 0.015 1 9
BO boron monoxide rB=O 1.205   1.220 0.015 1 2
OH- hydroxide anion rOH 0.964   0.980 0.016 1 2
SiH4 Silane rSiH 1.480 ±0.000 1.495 0.016 1 2
C6H6 Fulvene rC=C 1.355 ±0.004 1.371 0.016 3 5
SiH3Cl chlorosilane rSiH 1.475   1.491 0.016 1 3
BF3 Borane, trifluoro- rBF 1.307   1.323 0.016 1 2
C10H8 naphthalene rC:C 1.410   1.426 0.016 2 3
CH2CHCHO Acrolein rC=O 1.219 ±0.005 1.235 0.016 1 4
P2H4 H2PPH2 rPH 1.417   1.433 0.016 1 3
SiHCl3 Trichlorosilane rSiH 1.464   1.481 0.017 1 2
C3H4O Cyclopropanone rCC 1.575   1.592 0.017 3 4
CH2CHCHO Acrolein rCC 1.470 ±0.003 1.487 0.017 1 2
CH3OCH3 Dimethyl ether rCO 1.411 ±0.001 1.428 0.017 1 2
CHClCCl2 Trichloroethylene rCCl 1.712   1.729 0.017 2 6
C2H5F fluoroethane rCC 1.505 ±0.007 1.522 0.017 1 2
C5H5N Pyridine rC:C 1.390   1.407 0.017 3 5
C2H5F fluoroethane rCF 1.398 ±0.007 1.415 0.017 1 3
NH2CONH2 Urea rNH 0.998   1.016 0.018 4 8
CH2CHCH2CH3 1-Butene rCC 1.493   1.511 0.018 2 3
CFCl3 Trichloromonofluoromethane rCF 1.345   1.364 0.019 1 2
CH2NN diazomethane rN=N 1.139   1.158 0.019 2 3
BF Boron monofluoride rBF 1.267 ±0.000 1.285 0.019 1 2
P2H4 H2PPH2 rPH 1.414   1.433 0.019 1 4
C4H6O Cyclobutanone rCC 1.527   1.546 0.019 2 3
BeF Beryllium monofluoride rBeF 1.361   1.380 0.019 1 2
N2O3 Dinitrogen trioxide rN=O 1.217   1.236 0.019 2 5
CH3OCHO methyl formate rCO 1.437   1.456 0.019 1 2
BeS beryllium sulfide rBe=S 1.742   1.761 0.019 1 2
Si(CH3)4 tetramethylsilane rSiC 1.875 ±0.002 1.895 0.020 1 2
CH3COCl Acetyl Chloride rCCl 1.798   1.818 0.020 1 4
MgOH magnesium hydroxide rOH 0.940   0.960 0.020 1 3
CH3COCl Acetyl Chloride rC=O 1.187   1.207 0.020 1 3
C6H8 (Z)-hexa-1,3,5-triene rC=C 1.337   1.357 0.020 3 5
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.824 0.020 8 9
N(CH3)3 Trimethylamine rCH 1.088   1.108 0.020 2 5
C3H6 Cyclopropane rCC 1.501   1.521 0.020 1 2
C3H5 Allyl radical rCH 1.069   1.089 0.020 1 2
HNO3 Nitric acid rNO 1.406   1.426 0.020 1 2
C8H8 cyclooctatetraene rC=C 1.337 ±0.001 1.358 0.021 1 2
CHClCCl2 Trichloroethylene rCCl 1.720   1.741 0.021 2 5
NaCl Sodium Chloride rNaCl 2.361 ±0.000 2.382 0.021 1 2
H2CS Thioformaldehyde rC=S 1.611   1.632 0.021 1 2
HNCNH diiminomethane rC=N 1.224 ±0.001 1.245 0.021 1 2
C2H2 Acetylene rC#C 1.203   1.224 0.021 1 2
CH2FCl fluorochloromethane rCCl 1.762 ±0.000 1.784 0.022 1 3
MgS magnesium sulfide rMgS 2.143   2.164 0.022 1 2
C3H3NO Oxazole rCO 1.357   1.379 0.022 1 5
ClO Monochlorine monoxide rClO 1.596 ±0.001 1.618 0.022 1 2
C2H Ethynyl radical rCH 1.047   1.069 0.022 1 3
C4H10O Ethoxy ethane rCO 1.411   1.433 0.022 1 2
B2 Boron diatomic rBB 1.590   1.612 0.022 1 2
SiH Silylidyne rSiH 1.520   1.543 0.023 1 2
SiH+ silicon monohydride cation rHSi 1.504   1.527 0.023 1 2
CS carbon monosulfide rC#S 1.535   1.558 0.023 1 2
PH phosphorus monohydride rPH 1.422   1.446 0.023 1 2
CH2O2 Dioxirane rOO 1.516 ±0.003 1.539 0.023 4 5
CH2O2 Dioxirane rCO 1.388 ±0.004 1.411 0.023 1 4
CH3OCHO methyl formate rCO 1.334   1.357 0.023 2 3
C4H4N2 Pyridazine rCH 1.064   1.087 0.023 1 5
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCO 1.416   1.440 0.024 1 5
C5H10 2-Pentene, (Z)- rCC 1.490   1.514 0.024 8 14
C4H4N2 1,3-Diazine rC:N 1.328   1.352 0.024 2 6
C2H3N3 1H-1,2,4-Triazole rCN 1.348   1.372 0.024 1 2
C4H6 Methylenecyclopropane rCC 1.457   1.481 0.024 2 5
CH2CO Ketene rC=O 1.162   1.186 0.024 2 3
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.828 0.024 5 8
C4H10O Propane, 2-methoxy- rCO 1.422   1.446 0.024 5 14
C5H8 Spiropentane rCC 1.470   1.494 0.024 1 2
CCl2O Phosgene rC=O 1.177   1.201 0.024 1 2
CF Fluoromethylidyne rCF 1.276   1.301 0.024 1 2
F2O Difluorine monoxide rFO 1.405   1.430 0.025 1 2
CCl2O Phosgene rCCl 1.737   1.761 0.025 2 3
CHF2Cl difluorochloromethane rCCl 1.747 ±0.010 1.772 0.025 1 3
CH3NO3 Methyl nitrate rNO 1.402   1.427 0.025 1 4
C4H10O Methyl propyl ether rCO 1.408   1.433 0.025 9 10
CF3COOH trifluoroacetic acid rC=O 1.192 ±0.003 1.217 0.025 2 4
CCl2 dichloromethylene rCCl 1.711   1.737 0.025 1 2
AlH aluminum monohydride rAlH 1.648   1.674 0.026 1 2
HNCO Isocyanic acid rC=O 1.164   1.190 0.026 3 4
MgH magnesium monohydride rMgH 1.730   1.756 0.027 1 2
AlCl Aluminum monochloride rAlCl 2.130 ±0.000 2.157 0.027 1 2
BeO beryllium oxide rBe=O 1.331   1.358 0.027 1 2
ClCN chlorocyanogen rCCl 1.629   1.656 0.027 1 2
CO Carbon monoxide rC#O 1.128 ±0.000 1.156 0.028 1 2
NF nitrogen fluoride rNF 1.317   1.345 0.028 1 2
FNO2 Nitryl fluoride rN=O 1.180 ±0.005 1.208 0.028 1 3
C2H6O2S Dimethyl sulfone rCS 1.777 ±0.006 1.805 0.028 1 4
CH3NC methyl isocyanide rC#N 1.166 ±0.003 1.195 0.029 2 3
C4H6 Bicyclo[1.1.0]butane rCC 1.497   1.526 0.029 1 2
CN- cyanide anion rC#N 1.177 ±0.004 1.206 0.029 1 2
Si2 Silicon diatomic rSiSi 2.246   2.275 0.029 1 2
SiH3Cl chlorosilane rSiCl 2.051   2.080 0.030 1 2
ClCN chlorocyanogen rC#N 1.161   1.191 0.030 2 3
SiS silicon monosulfide rSiS 1.929 ±0.000 1.960 0.030 1 2
MgH+ magnesium monohydride cation rHMg 1.652   1.683 0.031 1 2
SiH2Cl2 dichlorosilane rSiCl 2.033 ±0.003 2.064 0.031 1 4
SOCl2 thionyl chloride rS=O 1.443 ±0.006 1.474 0.031 1 2
SiHCl3 Trichlorosilane rSiCl 2.020   2.052 0.032 1 3
AlC Aluminum carbide rC=Al 1.955   1.987 0.032 1 2
MgCl magnesium monochloride rMgCl 2.199   2.231 0.032 1 2
PCl5 Phosphorus pentachloride rPCl 2.124   2.156 0.032 1 5
CCl carbon monochloride rCCl 1.649   1.682 0.032 1 2
C5H10 2-Pentene, (E)- rCC 1.484   1.517 0.033 4 11
C2 Carbon diatomic rC=C 1.243   1.276 0.033 1 2
C5H10 2-Pentene, (Z)- rCH 1.058   1.092 0.034 12 13
C3H8O2 Methane, dimethoxy- rCO 1.382   1.417 0.035 1 4
N2O3 Dinitrogen trioxide rN=O 1.202   1.237 0.035 2 4
SiCl Clorosilylidyne rSiCl 2.061 ±0.000 2.097 0.035 1 2
Cl2 Chlorine diatomic rClCl 1.988   2.023 0.036 1 2
C3O2 Carbon suboxide rC=C 1.251   1.288 0.037 1 2
C5H8 Bicyclo[2.1.0]pentane rCC 1.507   1.545 0.038 1 2
SiO Silicon monoxide rSiO 1.510 ±0.000 1.548 0.038 1 2
SiF4 Silicon tetrafluoride rSiF 1.554   1.593 0.039 1 2
HOCl hypochlorous acid rClO 1.691   1.730 0.039 1 3
N2 Nitrogen diatomic rN#N 1.098   1.138 0.040 1 2
CH2NN diazomethane rC=N 1.300   1.340 0.040 1 2
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCO 1.353   1.394 0.041 5 10
N2O3 Dinitrogen trioxide rN=O 1.142   1.183 0.041 1 3
SCl sulfur monochloride rSCl 1.975   2.016 0.041 1 2
PF5 Phosphorus pentafluoride rFP 1.577   1.619 0.042 1 5
C3O2 Carbon suboxide rC=O 1.146   1.189 0.043 2 4
F2SO Thionyl Fluoride rO=S 1.413 ±0.000 1.456 0.044 1 2
AlF Aluminum monofluoride rAlF 1.654 ±0.000 1.699 0.045 1 2
PO2 Phosphorus dioxide rP=O 1.467   1.512 0.045 1 2
SiH3F monofluorosilane rSiF 1.595   1.640 0.046 1 2
C2H3N3 1H-1,2,4-Triazole rC=N 1.305   1.351 0.046 2 4
PCl5 Phosphorus pentachloride rPCl 2.020   2.066 0.046 1 2
AlN Aluminum nitride rN#Al 1.786   1.833 0.047 1 2
S2 Sulfur diatomic rS=S 1.889   1.936 0.047 1 2
SF Monosulfur monofluoride rSF 1.599   1.647 0.047 1 2
NO+ nitric oxide cation rN=O 1.066   1.113 0.048 1 2
Cl2+ chlorine diatomic cation rClCl 1.892   1.940 0.048 1 2
HClO4 perchloric acid rO=Cl 1.414 ±0.001 1.462 0.048 1 2
PCl phosphorus chloride rPCl 2.018   2.066 0.049 1 2
PF5 Phosphorus pentafluoride rPF 1.534   1.584 0.050 1 2
SiF2 Silicon difluoride rFSi 1.590 ±0.000 1.641 0.051 1 2
SF4 Sulfur tetrafluoride rSF 1.646 ±0.003 1.697 0.051 1 2
O2 Oxygen diatomic rO=O 1.208   1.259 0.051 1 2
C2Cl2 dichloroacetylene rCCl 1.612 ±0.030 1.663 0.051 1 3
SiF silicon monofluoride rSiF 1.604   1.656 0.052 1 2
SO Sulfur monoxide rS=O 1.481   1.533 0.052 1 2
SF4 Sulfur tetrafluoride rSF 1.545 ±0.003 1.598 0.053 1 4
SOF4 Sulfur tetrafluoride oxide rF-S 1.596 ±0.003 1.650 0.054 1 3
NS+ nitrogen sulfide cation rNS 1.440   1.494 0.054 1 2
C2H6O2S Dimethyl sulfone rS=O 1.431 ±0.004 1.485 0.054 1 2
SSO Disulfur monoxide rS=S 1.884   1.939 0.055 2 3
FNO2 Nitryl fluoride rNF 1.467 ±0.015 1.523 0.056 1 2
PF+ phosphorus monofluoride cation rFP 1.500   1.558 0.058 1 2
PO- phosphorus monoxide anion rOP 1.540   1.598 0.058 1 2
S2+ sulfur dimer cation rS=S 1.825 ±0.010 1.886 0.061 1 2
SSO Disulfur monoxide rS=O 1.456   1.519 0.062 1 2
SOF4 Sulfur tetrafluoride oxide rF-S 1.539 ±0.003 1.602 0.063 1 5
PF phosphorus monofluoride rFP 1.593   1.655 0.063 1 2
ClFO3 Perchloryl fluoride rCl=O 1.400   1.464 0.064 2 3
SO+ sulfur monoxide cation rO=S 1.424   1.488 0.064 1 2
SiP Silicon monophosphide rSiP 2.078 ±0.002 2.143 0.066 1 2
P2 Phosphorus diatomic rP#P 1.893   1.961 0.068 1 2
HClO4 perchloric acid rO=Cl 1.404 ±0.001 1.473 0.069 1 4
F2SO Thionyl Fluoride rFS 1.585 ±0.000 1.657 0.071 1 3
CH3ONO Methyl nitrite rCO 1.437   1.511 0.074 1 2
CH3ONO Methyl nitrite rNO 1.398   1.475 0.077 2 6
ClOF3 Chlorine trifluoride oxide rFCl 1.713 ±0.003 1.792 0.079 1 4
Li2 Lithium diatomic rLiLi 2.673   2.753 0.080 1 2
NaLi lithium sodium rLiNa 2.889   2.974 0.085 1 2
O2+ diatomic oxygen cation rOO 1.116   1.206 0.089 1 2
HClO4 perchloric acid rOCl 1.641 ±0.002 1.731 0.090 1 3
CH3ONO Methyl nitrite rN=O 1.182   1.286 0.104 6 7
ClOF3 Chlorine trifluoride oxide rFCl 1.603 ±0.004 1.723 0.120 1 3
ClFO3 Perchloryl fluoride rFCl 1.598   1.744 0.146 1 2
FO Oxygen monofluoride rFO 1.354   1.509 0.155 1 2
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 ±0.040 2.281 0.241 1 3
C3H3NO Oxazole rCH 1.075   1.399 0.324 3 4
CH3OC2H5 Ethane, methoxy- rCH 1.087   1.429 0.342 1 2
413 molecules.