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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 mPW1PW91/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
C5H10 2-Pentene, (E)- rCC 1.576   1.521 -0.055 11 15
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.560   1.515 -0.045 3 5
C5H8 Bicyclo[2.1.0]pentane rCC 1.536   1.500 -0.036 1 5
C4H5N Cyclopropanecarbonitrile rCC 1.472   1.437 -0.035 6 8
C5H8O Methyl cyclopropyl ketone rCH 1.126   1.093 -0.033 3 7
C5H10 2-Pentene, (Z)- rCC 1.561   1.529 -0.032 1 5
ScH Scandium monohydride rScH 1.775 ±0.000 1.744 -0.032 1 2
TiCl Titanium Monochloride rClTi 2.265 ±0.000 2.238 -0.027 1 2
F2 Fluorine diatomic rFF 1.412   1.385 -0.027 1 2
NH3BF3 Amminetrifluoroboron rBN 1.673   1.648 -0.025 1 2
C5H6 Propellane rCC 1.596 ±0.005 1.572 -0.024 2 5
CH3ONO Methyl nitrite rNO 1.398   1.374 -0.024 2 6
C4H5NO 3-Methylisoxazole rCC 1.514   1.490 -0.023 1 8
C4H5NO Isoxazole, 5-methyl- rCC 1.505   1.483 -0.022 1 5
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile rCC 1.514   1.492 -0.022 3 9
C4H4N2 Succinonitrile rCC 1.561   1.539 -0.022 1 2
C6H12 (E)-3-methylpent-2-ene rCC 1.551   1.530 -0.021 9 12
CH2ClCH2Cl Ethane, 1,2-dichloro- rCC 1.531   1.511 -0.020 1 2
C2H2O2 Ethanedial rCH 1.132   1.112 -0.020 1 3
HNO3 Nitric acid rNO 1.406   1.387 -0.019 1 2
LiOH lithium hydroxide rOH 0.969   0.950 -0.019 1 3
CH2ClCH2Cl Ethane, 1,2-dichloro- rCH 1.112   1.093 -0.019 1 5
F2O Difluorine monoxide rFO 1.405   1.386 -0.019 1 2
C4H5N Cyclopropanecarbonitrile rCC 1.513   1.494 -0.019 9 10
HO2 Hydroperoxy radical rOO 1.331   1.312 -0.018 1 2
FO Oxygen monofluoride rFO 1.354   1.336 -0.018 1 2
C5H9N Pentanenitrile rCC 1.478   1.460 -0.018 4 6
C3F6 hexafluoropropene rCF 1.329 ±0.003 1.311 -0.018 1 4
C3H8O2 Methane, dimethoxy- rCO 1.432   1.415 -0.017 4 6
CH3CH2CH2CH3 Butane rCH 1.117   1.101 -0.016 1 5
C4H4N2 1,3-Diazine rC:N 1.350   1.334 -0.016 3 5
FNO2 Nitryl fluoride rNF 1.467 ±0.015 1.452 -0.015 1 2
C6H8 (Z)-hexa-1,3,5-triene rC=C 1.368   1.354 -0.014 1 2
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.530   1.516 -0.014 1 3
CH3NH2 methyl amine rCN 1.471 ±0.003 1.457 -0.014 1 2
C3H6O Propylene oxide rCC 1.513   1.499 -0.014 2 6
C4H8O2 Ethyl acetate rCH 1.105   1.092 -0.013 1 7
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile rCC 1.518   1.505 -0.013 3 7
C5H6 1-Buten-3-yne, 2-methyl- rCC 1.445   1.432 -0.013 7 8
CH3COCl Acetyl Chloride rCC 1.506   1.493 -0.013 1 2
C3H5ClO Oxirane, (chloromethyl)- rCC 1.475   1.462 -0.013 3 4
C5H8 Cyclopentene rCC 1.518   1.506 -0.012 2 4
O2+ diatomic oxygen cation rOO 1.116   1.104 -0.012 1 2
N(CH3)3 Trimethylamine rCH 1.109   1.097 -0.012 2 8
C6H8 (Z)-hexa-1,3,5-triene rCH 1.104   1.092 -0.012 1 7
CH3COCl Acetyl Chloride rCH 1.105   1.093 -0.012 2 5
CH3NO3 Methyl nitrate rNO 1.402   1.390 -0.012 1 4
C5H8 1,3-Butadiene, 2-methyl- rCC 1.512   1.501 -0.011 2 5
O2 Oxygen diatomic rO=O 1.208   1.197 -0.011 1 2
CH2CHCH2CH2Cl 1-Butene, 4-chloro- rCC 1.508   1.498 -0.010 2 6
CH3OC2H5 Ethane, methoxy- rCO 1.415 ±0.005 1.405 -0.010 1 2
C5H12O Butane, 1-methoxy- rCO 1.415   1.405 -0.010 3 4
C10H8 Azulene rC:C 1.414   1.405 -0.009 7 9
C5H6 Propellane rCC 1.525 ±0.002 1.516 -0.009 1 2
C5H8 Ethenylcyclopropane rCH 1.099   1.090 -0.009 1 6
C3H4O Cyclopropanone rCC 1.575   1.567 -0.008 3 4
C5H5N Pyridine rC:C 1.400   1.392 -0.008 2 5
C5H8 Cyclobutane, methylene- rCC 1.524   1.516 -0.008 1 3
C5H8 Bicyclo[2.1.0]pentane rCC 1.565   1.558 -0.007 3 4
C4H8O2 Ethyl acetate rCC 1.508   1.501 -0.007 1 2
CH3CH2CHO Propanal rCC 1.509   1.502 -0.007 2 3
CH3CH2CHO Propanal rCH 1.103   1.096 -0.007 1 6
CH2CHCH2CH3 1-Butene rCC 1.536   1.529 -0.007 1 2
As2 Arsenic diatomic rAs#As 2.103   2.096 -0.007 1 2
C3H7SH 1-Propanethiol rCC 1.529   1.522 -0.007 7 10
CH3CH(NH2)COOH Alanine rCC 1.544   1.537 -0.007 3 4
HClO4 perchloric acid rOH 0.980   0.973 -0.007 3 6
C4H6 Bicyclo[1.1.0]butane rCC 1.497   1.491 -0.006 1 2
NO Nitric oxide rN=O 1.154 ±0.000 1.148 -0.006 1 2
HOCl hypochlorous acid rOH 0.973 ±0.002 0.967 -0.006 1 2
CH3ONO Methyl nitrite rCH 1.102   1.096 -0.006 1 4
C4H8O2 Ethyl acetate rCC 1.515   1.509 -0.006 5 6
CH3CH2CH2CH3 Butane rCC 1.531   1.525 -0.006 1 2
C3H3NO Oxazole rCO 1.357 ±0.003 1.352 -0.006 1 2
C4H4N2 Succinonitrile rCC 1.465   1.459 -0.006 1 3
C2H2O2 Ethanedial rCC 1.526   1.520 -0.006 1 2
C4H5N (E)-2-Butenenitrile rCC 1.432   1.426 -0.006 8 10
C4H10O Ethoxy ethane rCC 1.517   1.512 -0.005 2 4
H2CSe Selenoformaldehyde rC=Se 1.753   1.748 -0.005 1 2
CH3ONO Methyl nitrite rCO 1.437   1.432 -0.005 1 2
CH3CH2CHO Propanal rCC 1.523   1.518 -0.005 1 2
CH3OCH3 Dimethyl ether rCO 1.411 ±0.001 1.406 -0.005 1 2
C2H Ethynyl radical rC#C 1.217   1.212 -0.005 1 2
NH4+ ammonium cation rHN 1.029 ±0.000 1.024 -0.005 1 2
C3H3NO Oxazole rCO 1.370 ±0.002 1.365 -0.004 1 5
CH2CCHCH3 1,2-Butadiene rC=C 1.314   1.310 -0.004 1 2
CFCl3 Trichloromonofluoromethane rCF 1.345 ±0.003 1.341 -0.004 1 2
FNO2 Nitryl fluoride rN=O 1.180 ±0.005 1.176 -0.004 1 3
CH3OCHO methyl formate rCO 1.437   1.433 -0.004 1 2
C4H6 Cyclobutene rCC 1.517   1.513 -0.004 1 3
BN boron nitride rB=N 1.325   1.321 -0.004 1 2
HF+ hydrogen fluoride cation rHF 1.014   1.011 -0.004 1 2
NF nitrogen fluoride rNF 1.317   1.313 -0.004 1 2
CH3NH2 methyl amine rNH 1.018 ±0.001 1.015 -0.003 2 6
C4H6O Cyclobutanone rCC 1.556   1.553 -0.003 3 5
C5H8O Methyl cyclopropyl ketone rCC 1.510   1.507 -0.003 2 3
C5H10 Cyclopropane, 1,1-dimethyl- rCC 1.514   1.511 -0.003 1 4
C8H8 cubane rCH 1.097   1.094 -0.003 1 9
NO+ nitric oxide cation rN=O 1.066   1.063 -0.003 1 2
B2H6 Diborane rBH 1.200   1.197 -0.003 1 5
CH3COCl Acetyl Chloride rC=O 1.187   1.184 -0.003 1 3
C5H8 Ethenylcyclopropane rCC 1.475   1.473 -0.002 1 2
CH3CH2CHO Propanal rCH 1.105   1.103 -0.002 2 8
N3 azide radical rNN 1.181   1.179 -0.002 1 2
CH2NH Methanimine rCH 1.103   1.101 -0.002 1 3
C2H3Cl Ethene, chloro- rCH 1.090   1.088 -0.002 1 4
OCSe Carbonyl selenide rC=O 1.159   1.157 -0.002 1 2
CBr4 Carbon tetrabromide rCBr 1.942 ±0.002 1.940 -0.002 1 2
CO+ carbon monoxide cation rC=O 1.115 ±0.000 1.113 -0.002 1 2
C6H5OH phenol rC:C 1.398   1.396 -0.002 1 2
C10H8 Azulene rC:C 1.398   1.396 -0.002 1 3
CN Cyano radical rC#N 1.172   1.170 -0.002 1 2
NO- nitric oxide anion rN=O 1.258 ±0.010 1.256 -0.002 1 2
MgO magnesium oxide rMgO 1.749   1.747 -0.002 1 2
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCO 1.416   1.415 -0.001 1 5
CH3CH2OH Ethanol rCH 1.098   1.097 -0.001 1 6
C10H8 Azulene rC:C 1.405 ±0.001 1.403 -0.001 2 9
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCH 1.087   1.086 -0.001 11 12
CH3NO3 Methyl nitrate rCH 1.095   1.095 0.000 5 8
NSe Nitrogen monoselenide rN=Se 1.652   1.651 0.000 1 2
C6H5OH phenol rCO 1.364   1.364 0.000 1 7
CH3CH(CH3)CH3 Isobutane rCH 1.100   1.100 0.000 3 6
C3H6O 2-Propen-1-ol rCH 1.091 ±0.010 1.091 0.000 3 9
C5H8 Bicyclo[2.1.0]pentane rCC 1.528   1.528 0.000 1 3
CH3CH2CHO Propanal rCH 1.096   1.096 0.000 1 5
C4H10O Ethoxy ethane rCO 1.411   1.411 0.000 1 2
CH2PH Phosphaethene rCH 1.090 ±0.015 1.090 0.000 1 3
C2H2+ acetylene cation rC=C 1.253 ±0.001 1.253 0.000 1 2
H2Cl+ dihydrogen monochloride cation rHCl 1.321 ±0.000 1.321 0.000 1 2
ClCN chlorocyanogen rC#N 1.161   1.161 0.000 2 3
CH3NHCH3 Dimethylamine rCH 1.098   1.099 0.001 3 7
C6H12 Cyclohexane rCH 1.101   1.102 0.001 1 7
CH3ONO Methyl nitrite rN=O 1.182   1.183 0.001 6 7
C3H6O 2-Propen-1-ol rCH 1.092 ±0.010 1.093 0.001 2 7
C4H8O2 Ethyl acetate rCO 1.345   1.346 0.001 2 3
HCCl Chloromethylene rCH 1.119 ±0.036 1.120 0.001 1 3
HSe Selenium monohydride rSeH 1.475 ±0.010 1.476 0.001 1 2
CCl2O Phosgene rC=O 1.177   1.178 0.001 1 2
CH2 Methylene rCH 1.085   1.086 0.001 1 2
C4H4N2 1,3-Diazine rCH 1.087   1.088 0.001 1 7
AsH Arsenic monohydride rAsH 1.535 ±0.001 1.536 0.001 1 2
CH3OCHO methyl formate rCO 1.334   1.335 0.001 2 3
CH3CCH propyne rCH 1.096   1.097 0.001 1 5
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.097   1.098 0.001 5 6
HNCNH diiminomethane rC=N 1.224 ±0.001 1.226 0.002 1 2
C3H4N2 1H-Pyrazole rCH 1.082   1.084 0.002 1 2
CH3ONO Methyl nitrite rCH 1.090   1.092 0.002 1 3
CH2PH Phosphaethene rCH 1.090 ±0.015 1.092 0.002 1 4
CH2CO Ketene rC=O 1.162   1.164 0.002 2 3
CH3CH2CHO Propanal rCH 1.115   1.117 0.002 3 10
C4H6O Cyclobutanone rCC 1.527   1.529 0.002 2 3
CH3OCHO methyl formate rCH 1.101   1.103 0.002 3 8
BO boron monoxide rB=O 1.205   1.206 0.002 1 2
CH2C(CH3)CH3 1-Propene, 2-methyl- rCH 1.088   1.090 0.002 2 3
OH- hydroxide anion rOH 0.964   0.966 0.002 1 2
C5H8 1,3-Butadiene, 2-methyl- rCC 1.463   1.465 0.002 2 3
C3H4N2 1H-Pyrazole rCH 1.083   1.085 0.002 5 6
HeH+ Helium hydride cation rHHe 0.790   0.792 0.002 1 2
CH3CHO Acetaldehyde rCH 1.114   1.116 0.002 1 4
CH3NO nitrosomethane rCH 1.094   1.096 0.002 1 4
CSe Carbon monoselenide rC=Se 1.676 ±0.000 1.678 0.002 1 2
C6H10 1-Butyne, 3,3-dimethyl- rC#C 1.209 ±0.001 1.211 0.002 1 6
C3F6 hexafluoropropene rC=C 1.329 ±0.003 1.331 0.002 1 2
CH2CO Ketene rCH 1.083   1.085 0.002 1 4
C5H8O 2H-Pyran, 3,4-dihydro- rCC 1.516   1.519 0.003 10 13
C3H6O 2-Propen-1-ol rCH 1.102 ±0.020 1.105 0.003 1 6
CH3CHFCH3 2-Fluoropropane rCH 1.093 ±0.006 1.096 0.003 4 8
H2CSe Selenoformaldehyde rHC 1.090   1.093 0.003 1 3
CO Carbon monoxide rC#O 1.128 ±0.000 1.131 0.003 1 2
COBr2 Carbonic dibromide rC=O 1.172 ±0.003 1.175 0.003 1 2
CBrClF2 Methane, bromochlorodifluoro- rCBr 1.932 ±0.004 1.935 0.003 1 2
C3H4N2 1H-Pyrazole rCH 1.080   1.083 0.003 3 4
SCSe Carbon sulfide selenide rC=Se 1.695 ±0.002 1.698 0.003 1 3
CSe2 Carbon diselenide rC=Se 1.692 ±0.000 1.695 0.003 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.094 ±0.005 1.097 0.003 4 10
H2O Water rOH 0.958 ±0.000 0.961 0.003 1 2
SiH2Cl2 dichlorosilane rSiH 1.480 ±0.015 1.483 0.003 1 2
CH3CHS Thioacetaldehyde rCH 1.098   1.101 0.003 2 6
HNCO Isocyanic acid rC=O 1.164   1.167 0.003 3 4
OCSe Carbonyl selenide rC=Se 1.709   1.712 0.003 1 3
N2 Nitrogen diatomic rN#N 1.098   1.101 0.003 1 2
DF Hydrofluoric acid-d rDF 0.917 ±0.000 0.921 0.004 1 2
CH3CHS Thioacetaldehyde rCH 1.090   1.094 0.004 2 5
C3H6 Cyclopropane rCC 1.501   1.505 0.004 1 2
C4H6S Thiophene, 2,5-dihydro- rCH 1.095   1.099 0.004 2 6
C6H8 1,4-Cyclohexadiene rCH 1.100   1.104 0.004 1 11
B2H6 Diborane rBH 1.320   1.324 0.004 1 3
C3H8 Propane rCH 1.096   1.100 0.004 1 4
C4H8 cyclobutane rCH 1.093   1.097 0.004 1 5
As4 Arsenic tetramer rAsAs 2.435   2.439 0.004 1 2
NaH sodium hydride rNaH 1.887 ±0.000 1.891 0.004 1 2
H2CS Thioformaldehyde rC=S 1.611   1.615 0.004 1 2
CHClCCl2 Trichloroethylene rCCl 1.712   1.716 0.004 2 6
HF Hydrogen fluoride rHF 0.917 ±0.000 0.921 0.004 1 2
C5H5N Pyridine rC:C 1.390   1.394 0.004 3 5
C4H6 Cyclobutene rCH 1.094   1.098 0.004 3 7
CN- cyanide anion rC#N 1.177 ±0.004 1.181 0.004 1 2
CH3OC2H5 Ethane, methoxy- rCH 1.092 ±0.007 1.096 0.004 4 11
CH2CHCH2CH3 1-Butene rCC 1.493   1.497 0.004 2 3
HO2 Hydroperoxy radical rOH 0.971   0.975 0.004 1 3
C2H2ClF 1-chloro-1-fluoroethylene rCH 1.082 ±0.001 1.086 0.004 2 5
CH3OC2H5 Ethane, methoxy- rCO 1.407 ±0.004 1.412 0.005 2 3
CHF3 Methane, trifluoro- rCH 1.091 ±0.014 1.096 0.005 1 2
CH3CHClCH3 Propane, 2-chloro- rCH 1.091   1.096 0.005 2 5
CH3OCH3 Dimethyl ether rCH 1.099 ±0.001 1.104 0.005 2 6
C10H8 naphthalene rC:C 1.410   1.415 0.005 2 3
CH3OC2H5 Ethane, methoxy- rCH 1.099 ±0.007 1.104 0.005 1 6
CH3NO3 Methyl nitrate rCH 1.088   1.093 0.005 5 6
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.092   1.097 0.005 1 3
C4H10O Propane, 2-methoxy- rCO 1.422   1.427 0.005 5 14
CHONH2 formamide rNH 1.001   1.006 0.005 3 6
C3H6 Cyclopropane rCH 1.083   1.088 0.005 1 4
CH2Br2 dibromomethane rCBr 1.925 ±0.002 1.930 0.005 1 4
OH Hydroxyl radical rOH 0.970   0.975 0.005 1 2
C4H10O Ethoxy ethane rCH 1.092   1.097 0.005 4 10
BeO beryllium oxide rBe=O 1.331   1.336 0.005 1 2
C2H2 Acetylene rC#C 1.203   1.208 0.005 1 2
C4H8 cyclobutane rCH 1.091   1.096 0.005 1 6
C4H4N2 1,3-Diazine rC:N 1.328   1.333 0.005 2 6
C4H10O Ethoxy ethane rCH 1.100   1.105 0.005 2 6
C6H12 Cyclohexane rCH 1.093   1.099 0.006 1 13
C4H8O2 Ethyl acetate rC=O 1.203   1.209 0.006 2 4
CH3OC2H5 Ethane, methoxy- rCH 1.100 ±0.003 1.106 0.006 3 8
C6H8 (Z)-hexa-1,3,5-triene rC=C 1.337   1.343 0.006 3 5
CH3OCHO methyl formate rCH 1.086   1.092 0.006 1 5
PN Phosphorus mononitride rP#N 1.491   1.497 0.006 1 2
HOBr Hypobromous acid rOH 0.961   0.967 0.006 1 2
CH3CH(CH3)CH3 Isobutane rCH 1.092   1.098 0.006 3 9
CH2Cl2 Methylene chloride rCH 1.085 ±0.002 1.091 0.006 1 2
C5H10 2-Pentene, (Z)- rCH 1.092   1.098 0.006 1 2
C3H6O 2-Propen-1-ol rCH 1.096 ±0.030 1.102 0.006 1 5
C4H10O Propane, 2-methoxy- rCH 1.095   1.101 0.006 1 2
C2H5N Aziridine rCH 1.083   1.089 0.006 3 5
BeS beryllium sulfide rBe=S 1.742   1.748 0.006 1 2
CHBr3 bromoform rCBr 1.924 ±0.005 1.930 0.006 1 3
C5H10 2-Pentene, (Z)- rCC 1.490   1.496 0.006 8 14
CH3NO nitrosomethane rCH 1.092   1.098 0.006 1 5
C2H5N Aziridine rCH 1.084   1.090 0.006 3 6
C10H8 Azulene rCH 1.084   1.090 0.006 4 14
C6H5OH phenol rCH 1.082   1.089 0.007 4 11
C4H10O Ethoxy ethane rCH 1.090   1.097 0.007 4 12
C3H7SH 1-Propanethiol rCH 1.090   1.097 0.007 8 10
ClO Monochlorine monoxide rClO 1.596 ±0.001 1.603 0.007 1 2
CH3CHClCH3 Propane, 2-chloro- rCH 1.092   1.099 0.007 3 6
C10H8 Azulene rCH 1.080   1.086 0.007 9 17
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.090   1.097 0.007 9 11
ArH+ Argon hydride cation rArH 1.292 ±0.000 1.299 0.007 1 2
CH2CHF Ethene, fluoro- rCH 1.082   1.089 0.007 1 4
HOBr Hypobromous acid rBrO 1.834   1.841 0.007 2 3
C3H7SH 1-Propanethiol rCH 1.092   1.099 0.007 5 7
C4H6 Cyclobutene rCH 1.083   1.090 0.007 1 5
CFCl3 Trichloromonofluoromethane rCCl 1.764 ±0.001 1.771 0.007 1 3
P2 Phosphorus diatomic rP#P 1.893   1.901 0.007 1 2
C2H2 Acetylene rCH 1.063   1.070 0.007 1 3
C6H5OH phenol rCH 1.084   1.091 0.007 2 9
CF Fluoromethylidyne rCF 1.276   1.283 0.007 1 2
HS+ sulfur monohydride cation rSH 1.374   1.382 0.007 1 2
CHONH2 formamide rNH 1.001   1.009 0.008 3 5
SiC silicon monocarbide rCSi 1.722   1.730 0.008 1 2
C10H8 Azulene rC:C 1.484   1.492 0.008 7 8
NH Imidogen rNH 1.036   1.044 0.008 1 2
C3H3NO Oxazole rCH 1.075 ±0.001 1.083 0.008 2 6
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.089   1.097 0.008 9 10
CH3Br methyl bromide rCBr 1.934 ±0.000 1.942 0.008 1 2
CH4 Methane rCH 1.087 ±0.001 1.095 0.008 1 2
CH3CH2Cl Ethyl chloride rCH 1.086   1.094 0.008 2 7
C3H4 cyclopropene rCH 1.088   1.096 0.008 1 6
CH3CHO Acetaldehyde rCH 1.086   1.094 0.008 2 5
SCSe Carbon sulfide selenide rC=S 1.553 ±0.002 1.561 0.008 1 2
HCCl Chloromethylene rCCl 1.696 ±0.003 1.704 0.008 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.092   1.100 0.008 1 3
CH3OC2H5 Ethane, methoxy- rCH 1.089 ±0.008 1.097 0.008 4 10
C3H3NO Oxazole rCH 1.073 ±0.001 1.081 0.008 5 8
Se2 Selenium diatomic rSe=Se 2.166 ±0.001 2.174 0.008 1 2
ClCN chlorocyanogen rCCl 1.629   1.637 0.008 1 2
C3H3NO Oxazole rCH 1.075 ±0.001 1.083 0.008 4 7
CH3CH2Cl Ethyl chloride rCH 1.090   1.099 0.008 1 3
CH2Cl2 Methylene chloride rCCl 1.767 ±0.002 1.776 0.009 1 4
C4H6 Methylenecyclopropane rCC 1.457   1.466 0.009 2 5
CH3CCH propyne rCH 1.060   1.069 0.009 3 4
CH2ClCH2Cl Ethane, 1,2-dichloro- rCCl 1.790   1.799 0.009 1 3
C4H4N2 1,3-Diazine rCH 1.082   1.091 0.009 2 8
C2H3Cl Ethene, chloro- rCH 1.079   1.088 0.009 2 5
C5H10 Cyclopropane, 1,1-dimethyl- rCH 1.080   1.089 0.009 2 6
CH3OC2H5 Ethane, methoxy- rCH 1.086 ±0.010 1.095 0.009 1 5
CrH Chromium hydride rHCr 1.655 ±0.001 1.664 0.009 1 2
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.813 0.009 8 9
CHClCCl2 Trichloroethylene rCCl 1.720   1.729 0.009 2 5
CH3CH2OH Ethanol rCH 1.088   1.097 0.009 1 5
CH3Br methyl bromide rCH 1.082 ±0.001 1.092 0.009 1 3
CH3CHFCH3 2-Fluoropropane rCH 1.088 ±0.006 1.098 0.010 4 6
BeH2 beryllium dihydride rBeH 1.326 ±0.000 1.336 0.010 1 2
C10H8 Azulene rCH 1.083   1.092 0.010 5 15
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
CS carbon monosulfide rC#S 1.535   1.545 0.010 1 2
CH3NHCH3 Dimethylamine rCH 1.098   1.108 0.010 3 5
HOCl hypochlorous acid rClO 1.697 ±0.001 1.707 0.010 1 3
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.087   1.097 0.010 1 2
C3H4 cyclopropene rCH 1.072   1.082 0.010 2 4
C10H8 Azulene rCH 1.081   1.092 0.010 1 11
CH2CHF Ethene, fluoro- rCH 1.077   1.087 0.010 2 5
C2H2+ acetylene cation rCH 1.077 ±0.005 1.087 0.011 1 3
BH3 boron trihydride rBH 1.190   1.201 0.011 1 2
HBr hydrogen bromide rHBr 1.414 ±0.000 1.425 0.011 1 2
C3H6O 2-Propen-1-ol rCH 1.078 ±0.010 1.089 0.011 3 8
NH2CONH2 Urea rNH 0.998   1.009 0.011 4 8
CH3NH2 methyl amine rCH 1.093 ±0.000 1.104 0.011 1 3
CCl2O Phosgene rCCl 1.737   1.748 0.011 2 3
CH3CSNH2 Ethanethioamide rC=S 1.647 ±0.002 1.658 0.011 1 2
CH3CH2O Ethoxy radical rCH 1.085   1.097 0.012 1 5
CH2F2 Methane, difluoro- rCF 1.351 ±0.001 1.362 0.012 1 4
AsF5 Arsenic pentafluoride rAsF 1.711 ±0.005 1.723 0.012 1 5
CHF3 Methane, trifluoro- rCF 1.328 ±0.003 1.340 0.012 1 3
HBr+ hydrogen bromide cation rHBr 1.448   1.461 0.012 1 2
MgOH magnesium hydroxide rOH 0.940   0.952 0.012 1 3
CH3CH2O Ethoxy radical rCH 1.086   1.098 0.012 1 4
SiP Silicon monophosphide rSiP 2.078 ±0.002 2.090 0.012 1 2
H2Se Hydrogen selenide rSeH 1.460   1.472 0.012 1 2
KrH+ Protonated Krypton rHKr 1.421 ±0.000 1.434 0.012 1 2
C6H10 1-Butyne, 3,3-dimethyl- rCH 1.056 ±0.001 1.068 0.012 6 7
CH3NHCH3 Dimethylamine rCH 1.084   1.097 0.013 3 9
GeO Germanium monoxide rOGe 1.625   1.637 0.013 1 2
BeH beryllium monohydride rBeH 1.343   1.355 0.013 1 2
C2H3 vinyl rCH 1.085   1.098 0.013 2 4
BS boron sulfide rBS 1.609   1.622 0.013 1 2
C4H4N2 1,3-Diazine rCH 1.079   1.092 0.013 3 9
NH2SH Thiohydroxylamine rSH 1.344 ±0.029 1.357 0.013 2 3
CH2F2 Methane, difluoro- rCH 1.084 ±0.003 1.097 0.013 1 2
SeCl2 Selenium Dichloride rClSe 2.157 ±0.003 2.170 0.013 1 2
CH3CH(NH2)COOH Alanine rCC 1.509   1.522 0.013 2 3
SiHCl3 Trichlorosilane rSiH 1.464   1.477 0.013 1 2
C10H8 Azulene rC:C 1.377   1.391 0.013 5 7
C6H5OH phenol rCH 1.076   1.090 0.014 3 10
SiH3F monofluorosilane rSiH 1.476   1.490 0.014 1 3
P2H4 Diphosphine rPH 1.417   1.431 0.014 1 3
CH3COCl Acetyl Chloride rCCl 1.798   1.812 0.014 1 4
LiNH2 lithium amide rLiN 1.736 ±0.003 1.750 0.014 1 2
LiOH lithium hydroxide rLiO 1.582   1.596 0.014 1 2
SiH3Cl chlorosilane rSiH 1.475   1.489 0.014 1 3
SiH4 Silane rSiH 1.480 ±0.000 1.494 0.014 1 2
SeO2 Selenium dioxide rSeO 1.607 ±0.001 1.621 0.014 1 2
NaF sodium fluoride rNaF 1.926 ±0.000 1.940 0.014 1 2
HS- mercapto anion rSH 1.343   1.358 0.015 1 2
CH Methylidyne rCH 1.120   1.135 0.015 1 2
MgS magnesium sulfide rMgS 2.143   2.157 0.015 1 2
C3H7N Cyclopropylamine rCH 1.080   1.095 0.015 1 2
GeS Germanium monosulfide rS=Ge 2.012 ±0.000 2.027 0.015 1 2
SeO Selenium monoxide rSeO 1.639 ±0.001 1.654 0.015 1 2
HSiCl Chlorosilylene rSiH 1.525 ±0.005 1.540 0.015 1 3
AsH3 Arsine rAsH 1.511 ±0.000 1.526 0.015 1 2
DCl Hydrochloric acid-d rDCl 1.275 ±0.000 1.290 0.015 1 2
HCl Hydrogen chloride rHCl 1.275 ±0.000 1.290 0.015 1 2
C3H8O2 Methane, dimethoxy- rCO 1.382   1.398 0.016 1 4
BF3 Borane, trifluoro- rBF 1.307   1.323 0.016 1 2
BCl boron monochloride rBCl 1.719 ±0.000 1.736 0.016 1 2
C2 Carbon diatomic rC=C 1.243   1.259 0.016 1 2
GeH germylidene rGeH 1.588   1.604 0.016 1 2
P2H4 Diphosphine rPH 1.414   1.430 0.016 1 4
C5H10 2-Pentene, (E)- rCC 1.484   1.500 0.016 4 11
HS Mercapto radical rSH 1.341   1.358 0.017 1 2
LiH Lithium Hydride rLiH 1.595 ±0.000 1.612 0.017 1 2
CH3CH2OH Ethanol rCH 1.086   1.103 0.017 2 8
PS phosphorus sulfide rP=S 1.900   1.917 0.017 1 2
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCO 1.353   1.370 0.017 5 10
D2 Deuterium diatomic rDD 0.742   0.759 0.017 1 2
H2 Hydrogen diatomic rHH 0.741   0.759 0.017 1 2
HD Deuterium hydride rDH 0.741   0.759 0.017 1 2
CCl2 dichloromethylene rCCl 1.711   1.729 0.017 1 2
PH phosphorus monohydride rPH 1.422   1.440 0.018 1 2
MgH magnesium monohydride rMgH 1.730   1.748 0.018 1 2
LiO lithium oxide rLiO 1.688   1.706 0.018 1 2
BH Boron monohydride rBH 1.232   1.251 0.018 1 2
HCl+ hydrogen chloride cation rHCl 1.315   1.333 0.019 1 2
BrF Bromine monofluoride rFBr 1.759 ±0.000 1.778 0.019 1 2
GeH3F monofluorogermane rGeH 1.515 ±0.000 1.533 0.019 1 3
C5H8O Cyclopentanone rCC 1.504   1.523 0.019 2 3
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.824 0.020 5 8
BeCl beryllium monochloride rBeCl 1.797   1.817 0.020 1 2
LiF lithium fluoride rLiF 1.564 ±0.000 1.584 0.020 1 2
SiH2F2 difluorosilane rSiH 1.462   1.481 0.020 1 4
C2H6O2S Dimethyl sulfone rCS 1.777 ±0.006 1.797 0.020 1 4
BrF5 bromine pentafluoride rFBr 1.774 ±0.003 1.794 0.020 1 3
BF Boron monofluoride rBF 1.267 ±0.000 1.287 0.020 1 2
NS Mononitrogen monosulfide rNS 1.497 ±0.000 1.518 0.021 1 2
BrO Bromine monoxide rOBr 1.718   1.739 0.021 1 2
GeBr4 Germanium tetrabromide rGeBr 2.272 ±0.001 2.293 0.021 1 2
CCl carbon monochloride rCCl 1.649   1.670 0.021 1 2
SiH3+ Silyl cation rSiH 1.460 ±0.010 1.481 0.021 1 2
Br2 Bromine diatomic rBrBr 2.281   2.303 0.022 1 2
BrF3 Bromine trifluoride rFBr 1.810 ±0.000 1.832 0.022 1 3
SO+ sulfur monoxide cation rO=S 1.424   1.446 0.022 1 2
N(CH3)3 Trimethylamine rCH 1.088   1.111 0.023 2 5
SiH Silylidyne rSiH 1.520   1.543 0.023 1 2
NaCl Sodium Chloride rNaCl 2.361 ±0.000 2.384 0.023 1 2
C5H8 Bicyclo[2.1.0]pentane rCC 1.507   1.530 0.023 1 2
SiS silicon monosulfide rSiS 1.929 ±0.000 1.953 0.024 1 2
CH3CH2O Ethoxy radical rCH 1.088   1.112 0.024 2 7
C3H5 Allyl radical rCH 1.069   1.093 0.024 1 2
BrCl Bromine monochloride rClBr 2.136 ±0.000 2.160 0.024 1 2
C4H4N2 Pyridazine rCH 1.064   1.089 0.025 1 5
C2H Ethynyl radical rCH 1.047   1.072 0.025 1 3
S2 Sulfur diatomic rS=S 1.889   1.915 0.026 1 2
ClF Chlorine monofluoride rFCl 1.628 ±0.000 1.655 0.026 1 2
HSSSH trisulfane rSS 2.054 ±0.000 2.081 0.027 1 2
AlS Aluminum sulfide rAlS 2.029   2.057 0.028 1 2
AlH aluminum monohydride rAlH 1.648   1.676 0.028 1 2
NCl nitrogen monochloride rNCl 1.611 ±0.000 1.639 0.028 1 2
SiH+ silicon monohydride cation rSiH 1.504   1.532 0.028 1 2
GaF Gallium monofluoride rFGa 1.774 ±0.000 1.803 0.029 1 2
Cl2+ chlorine diatomic cation rClCl 1.892   1.921 0.029 1 2
BrF3 Bromine trifluoride rFBr 1.721   1.751 0.030 1 2
Cl2 Chlorine diatomic rClCl 1.988   2.018 0.030 1 2
SiO Silicon monoxide rSiO 1.510 ±0.000 1.540 0.030 1 2
OPCl Phosphorus oxychloride rP=O 1.462 ±0.011 1.493 0.031 1 2
AlO Aluminum monoxide rAlO 1.618   1.649 0.031 1 2
SCl sulfur monochloride rSCl 1.975   2.006 0.031 1 2
SSO Disulfur monoxide rS=S 1.884   1.915 0.031 2 3
PO Phosphorus monoxide rP=O 1.476   1.507 0.031 1 2
PCl5 Phosphorus pentachloride rPCl 2.124   2.156 0.032 1 5
SCl2 Sulfur dichloride rSCl 2.013 ±0.001 2.045 0.032 1 2
GeF+ Germanium monofluoride cation rFGe 1.665 ±0.000 1.699 0.033 1 2
GeH3F monofluorogermane rGeF 1.731 ±0.000 1.764 0.033 1 2
AsF Arsenic monofluoride rFAs 1.736 ±0.001 1.769 0.033 1 2
GeF Germanium monofluoride rFGe 1.745   1.779 0.034 1 2
SO Sulfur monoxide rS=O 1.481   1.516 0.035 1 2
LiCl lithium chloride rLiCl 2.021 ±0.000 2.056 0.035 1 2
PF5 Phosphorus pentafluoride rFP 1.577   1.612 0.035 1 5
AsF3 Arsenic trifluoride rAsF 1.706 ±0.002 1.742 0.036 1 2
MgOH magnesium hydroxide rMgO 1.767   1.803 0.036 1 2
C5H10 2-Pentene, (Z)- rCH 1.058   1.094 0.036 12 13
BeF Beryllium monofluoride rBeF 1.361   1.397 0.036 1 2
B2 Boron diatomic rBB 1.590   1.627 0.037 1 2
GeCl Germanium monochloride rClGe 2.164 ±0.000 2.201 0.037 1 2
LiBr Lithium Bromide rLiBr 2.170 ±0.000 2.209 0.038 1 2
CFCl chlorofluoromethylene rCCl 1.714   1.752 0.038 1 3
PCl5 Phosphorus pentachloride rPCl 2.020   2.059 0.039 1 2
AlC Aluminum carbide rC=Al 1.955   1.994 0.039 1 2
SSO Disulfur monoxide rS=O 1.456   1.495 0.039 1 2
SF Monosulfur monofluoride rSF 1.599   1.639 0.039 1 2
SiBr+ Silicon monobromide cation rSiBr 2.095 ±0.000 2.135 0.039 1 2
SiH3Cl chlorosilane rSiCl 2.051   2.090 0.040 1 2
NaLi lithium sodium rLiNa 2.889   2.930 0.041 1 2
SiHCl3 Trichlorosilane rSiCl 2.020   2.061 0.041 1 3
F2SO Thionyl Fluoride rO=S 1.413 ±0.000 1.454 0.041 1 2
SiH2Cl2 dichlorosilane rSiCl 2.033 ±0.003 2.074 0.041 1 4
GaAs Gallium arsenide rGa#As 2.530 ±0.020 2.571 0.041 1 2
AlF Aluminum monofluoride rAlF 1.654 ±0.000 1.696 0.041 1 2
ClOF3 Chlorine trifluoride oxide rFCl 1.713 ±0.003 1.755 0.042 1 4
OPCl Phosphorus oxychloride rPCl 2.059 ±0.004 2.101 0.043 1 3
SOF4 Sulfur tetrafluoride oxide rFS 1.596 ±0.003 1.639 0.043 1 3
HClO4 perchloric acid rO=Cl 1.414 ±0.001 1.457 0.043 1 2
AlNC Aluminum isocyanide rAlN 1.855 ±0.005 1.898 0.043 1 2
SF4 Sulfur tetrafluoride rSF 1.646 ±0.003 1.691 0.045 1 2
SiF4 Silicon tetrafluoride rSiF 1.554   1.600 0.046 1 2
AsF5 Arsenic pentafluoride rAsF 1.656 ±0.004 1.702 0.046 1 2
SiCl Clorosilylidyne rSiCl 2.061 ±0.000 2.108 0.046 1 2
GaBr Gallium monobromide rGaBr 2.352 ±0.000 2.399 0.047 1 2
PF5 Phosphorus pentafluoride rPF 1.534   1.581 0.047 1 2
BrF5 bromine pentafluoride rFBr 1.689 ±0.008 1.737 0.048 1 2
He2+ helium diatomic cation rHeHe 1.081 ±0.001 1.129 0.049 1 2
HSiCl Chlorosilylene rSiCl 2.067 ±0.003 2.117 0.050 1 2
C2H6O2S Dimethyl sulfone rS=O 1.431 ±0.004 1.484 0.053 1 2
SiH3F monofluorosilane rSiF 1.595   1.648 0.053 1 2
SF4 Sulfur tetrafluoride rSF 1.545 ±0.003 1.599 0.054 1 4
ClFO3 Perchloryl fluoride rCl=O 1.400   1.455 0.055 2 3
PF2 Phosphorus difluoride rPF 1.579   1.635 0.055 1 2
SOF4 Sulfur tetrafluoride oxide rFS 1.539 ±0.003 1.596 0.057 1 5
SiF silicon monofluoride rSiF 1.604   1.661 0.057 1 2
SiF2 Silicon difluoride rFSi 1.590 ±0.000 1.648 0.058 1 2
HClO4 perchloric acid rOCl 1.641 ±0.002 1.700 0.059 1 3
F2SO Thionyl Fluoride rFS 1.585 ±0.000 1.646 0.060 1 3
C4H8O2 Ethyl acetate rCO 1.448   1.509 0.061 5 6
AlBr Aluminum monobromide rAlBr 2.295   2.356 0.062 1 2
HClO4 perchloric acid rO=Cl 1.404 ±0.001 1.467 0.063 1 4
AlCl Aluminum monochloride rAlCl 2.130 ±0.000 2.194 0.064 1 2
ClOF3 Chlorine trifluoride oxide rFCl 1.603 ±0.004 1.670 0.067 1 3
Li2 Lithium diatomic rLiLi 2.673   2.750 0.077 1 2
ClFO3 Perchloryl fluoride rFCl 1.598   1.689 0.091 1 2
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 ±0.040 2.301 0.261 1 3
C4H10O Methyl propyl ether rCH 1.099   1.405 0.306 1 2
482 molecules.