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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 CID/6-31G*

Species Name Bond type Bond Length (Å)
Experimental unc. Calculated Difference atom1 atom2
C4H10O Methyl propyl ether rCC 1.530   1.090 -0.440 5 13
Cu2 Copper diatomic rCuCu 2.220   2.074 -0.146 1 2
Si2 Silicon diatomic rSiSi 2.246   2.157 -0.089 1 2
FNO2 Nitryl fluoride rNF 1.467 ±0.015 1.392 -0.075 1 2
CuF Copper monofluoride rCuF 1.745 ±0.000 1.677 -0.068 1 2
C5H10 2-Pentene, (E)- rCC 1.576   1.523 -0.053 11 15
PS phosphorus sulfide rP=S 1.900   1.847 -0.053 1 2
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.560   1.507 -0.053 3 5
C2Cl2 dichloroacetylene rC#C 1.246 ±0.030 1.194 -0.052 1 2
SiP Silicon monophosphide rSiP 2.078 ±0.002 2.026 -0.052 1 2
CuH Copper monohydride rCuH 1.463   1.412 -0.051 1 2
C6H6 Fulvene rCH 1.130 ±0.030 1.080 -0.050 2 7
CH3ONO Methyl nitrite rNO 1.398   1.354 -0.044 2 6
C6H5OCH3 Anisole rCO 1.399   1.357 -0.042 1 7
C5H8 Bicyclo[2.1.0]pentane rCC 1.536   1.494 -0.042 1 5
CH3NO3 Methyl nitrate rNO 1.402   1.360 -0.042 1 4
HNO3 Nitric acid rNO 1.406   1.365 -0.041 1 2
C5H8O Methyl cyclopropyl ketone rCH 1.126   1.085 -0.041 3 7
C5H6 Propellane rCC 1.596 ±0.005 1.555 -0.041 2 5
C2H2O2 Ethanedial rCH 1.132   1.098 -0.034 1 3
C5H10 2-Pentene, (Z)- rCC 1.561   1.529 -0.032 1 5
CH2O2 Dioxirane rOO 1.516 ±0.003 1.484 -0.031 4 5
CN Cyano radical rC#N 1.172   1.141 -0.031 1 2
C2H Ethynyl radical rC#C 1.217   1.187 -0.030 1 2
SiN Silicon nitride rSiN 1.575   1.546 -0.029 1 2
C6H5OCH3 Anisole rCO 1.433   1.405 -0.028 7 8
CH2ClCH2Cl Ethane, 1,2-dichloro- rCH 1.112   1.085 -0.027 1 5
C4H5N Cyclopropanecarbonitrile rCC 1.472   1.445 -0.027 6 8
C9H8 Indene rCC 1.415 ±0.170 1.388 -0.027 1 2
C3F6 hexafluoropropene rCF 1.329 ±0.003 1.303 -0.026 1 4
Si(CH3)4 tetramethylsilane rCH 1.115 ±7.000 1.091 -0.024 2 6
CH3CH2CH2CH3 Butane rCH 1.117   1.093 -0.024 1 5
C4H5N Cyclopropanecarbonitrile rCC 1.513   1.489 -0.024 9 10
N2O3 Dinitrogen trioxide rN=O 1.217   1.194 -0.023 2 5
ClOF3 Chlorine trifluoride oxide rFCl 1.713 ±0.003 1.690 -0.023 1 4
CH3OCl methyl hypochlorite rCH 1.111 ±0.018 1.088 -0.023 3 4
C4H8O2 Ethyl acetate rCH 1.105   1.083 -0.022 1 7
HeH+ Helium hydride cation rHHe 0.790   0.768 -0.022 1 2
C3H8O2 1,3-Propanediol rOH 0.980   0.959 -0.021 6 8
C5H6 Propellane rCC 1.525 ±0.002 1.505 -0.020 1 2
C10H8 Azulene rC:C 1.414   1.394 -0.020 7 9
N(CH3)3 Trimethylamine rCH 1.109   1.089 -0.020 2 8
CuCl Copper monochloride rCuCl 2.051 ±0.000 2.032 -0.020 1 2
C3H5ClO Oxirane, (chloromethyl)- rCC 1.475   1.456 -0.019 3 4
C4H6 Bicyclo[1.1.0]butane rCC 1.497   1.478 -0.019 1 2
CH3COCl Acetyl Chloride rCH 1.105   1.086 -0.019 2 5
CF3COOH trifluoroacetic acid rCC 1.546 ±0.005 1.528 -0.018 1 2
H2Cl+ dihydrogen monochloride cation rHCl 1.321 ±0.000 1.302 -0.018 1 2
CH2ClCH2Cl Ethane, 1,2-dichloro- rCC 1.531   1.514 -0.017 1 2
BrF5 bromine pentafluoride rFBr 1.774 ±0.003 1.757 -0.017 1 3
C6H6 Fulvene rC=C 1.349 ±0.002 1.331 -0.017 1 2
AsF5 Arsenic pentafluoride rAsF 1.711 ±0.005 1.694 -0.017 1 5
C5H8 Ethenylcyclopropane rCH 1.099   1.082 -0.017 1 6
F2O Difluorine monoxide rFO 1.405   1.389 -0.016 1 2
CH3ONO Methyl nitrite rCH 1.102   1.086 -0.016 1 4
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.530   1.515 -0.015 1 3
NH2F monofluoroamine rNF 1.433   1.418 -0.015 1 2
C6H6 Fulvene rC=C 1.355 ±0.004 1.340 -0.015 3 5
C3F6 hexafluoropropene rC=C 1.329 ±0.003 1.314 -0.015 1 2
BN boron nitride rB=N 1.325   1.310 -0.015 1 2
CH3CH2CHO Propanal rCH 1.103   1.088 -0.015 1 6
C3H4O Cyclopropanone rCC 1.575   1.560 -0.015 3 4
CH3COCl Acetyl Chloride rCCl 1.798   1.783 -0.015 1 4
CH3CH(NH2)COOH Alanine rCC 1.544   1.530 -0.014 3 4
CO+ carbon monoxide cation rC=O 1.115 ±0.000 1.101 -0.014 1 2
ArH+ Argon hydride cation rArH 1.292 ±0.000 1.278 -0.014 1 2
CH3OCHO methyl formate rCO 1.437   1.423 -0.014 1 2
H2CSe Selenoformaldehyde rC=Se 1.753   1.739 -0.014 1 2
C3H3NO Oxazole rCO 1.357 ±0.003 1.344 -0.014 1 2
LiOH lithium hydroxide rOH 0.969   0.955 -0.014 1 3
NaF sodium fluoride rNaF 1.926 ±0.000 1.912 -0.013 1 2
NO Nitric oxide rN=O 1.154 ±0.000 1.140 -0.013 1 2
As4 Arsenic tetramer rAsAs 2.435   2.422 -0.013 1 2
CHF2Cl difluorochloromethane rCF 1.350 ±0.010 1.337 -0.013 1 4
C8H8 cubane rCH 1.097   1.084 -0.013 1 9
F2 Fluorine diatomic rFF 1.412   1.400 -0.012 1 2
C2H2O2 Ethanedial rCC 1.526   1.514 -0.012 1 2
C3H6O Propylene oxide rCC 1.513   1.501 -0.012 2 6
CH3OC2H5 Ethane, methoxy- rCO 1.415 ±0.005 1.403 -0.012 1 2
C10H8 Azulene rC:C 1.405 ±0.001 1.393 -0.012 2 9
CH3CH2CHO Propanal rCH 1.115   1.103 -0.012 3 10
CP Carbon monophosphide rC#P 1.562   1.550 -0.012 1 2
CH3NO3 Methyl nitrate rCH 1.095   1.083 -0.012 5 8
NS+ nitrogen sulfide cation rNS 1.440   1.429 -0.011 1 2
CSe2 Carbon diselenide rC=Se 1.692 ±0.000 1.681 -0.011 1 2
HS+ sulfur monohydride cation rSH 1.374   1.364 -0.011 1 2
CH3CH2CHO Propanal rCH 1.105   1.094 -0.011 2 8
C10H8 Azulene rC:C 1.398   1.388 -0.010 1 3
CH2NH Methanimine rCH 1.103   1.093 -0.010 1 3
N2O3 Dinitrogen trioxide rN=O 1.202   1.192 -0.010 2 4
C2H3Cl Ethene, chloro- rCH 1.090   1.080 -0.010 1 4
HCCl Chloromethylene rCH 1.119 ±0.036 1.109 -0.010 1 3
CH3CHO Acetaldehyde rCH 1.114   1.104 -0.010 1 4
NS Mononitrogen monosulfide rNS 1.497 ±0.000 1.487 -0.010 1 2
CH2CCHCH3 1,2-Butadiene rC=C 1.314   1.304 -0.010 1 2
CSe Carbon monoselenide rC=Se 1.676 ±0.000 1.666 -0.010 1 2
HClO4 perchloric acid rOCl 1.641 ±0.002 1.631 -0.010 1 3
B2H6 Diborane rBH 1.200   1.191 -0.009 1 5
C2H5F fluoroethane rCF 1.398 ±0.007 1.389 -0.009 1 3
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCH 1.087   1.078 -0.009 11 12
C3H3NO Oxazole rCO 1.370 ±0.002 1.361 -0.009 1 5
CH2FCl fluorochloromethane rCF 1.370 ±0.001 1.361 -0.009 1 2
C5H8 Bicyclo[2.1.0]pentane rCC 1.565   1.556 -0.009 3 4
CH3NH2 methyl amine rCN 1.471 ±0.003 1.462 -0.009 1 2
C3H6O 2-Propen-1-ol rCH 1.091 ±0.010 1.082 -0.009 3 9
SCSe Carbon sulfide selenide rC=Se 1.695 ±0.002 1.686 -0.009 1 3
CH3CH2OH Ethanol rCH 1.098   1.089 -0.009 1 6
C8H8 cyclooctatetraene rC=C 1.337 ±0.001 1.329 -0.009 1 2
C3H6O 2-Propen-1-ol rCH 1.092 ±0.010 1.083 -0.009 2 7
As2 Arsenic diatomic rAs#As 2.103   2.094 -0.008 1 2
NSe Nitrogen monoselenide rN=Se 1.652   1.643 -0.008 1 2
SCSe Carbon sulfide selenide rC=S 1.553 ±0.002 1.545 -0.008 1 2
B2H6 Diborane rBH 1.320   1.312 -0.008 1 3
BeO beryllium oxide rBe=O 1.331   1.323 -0.008 1 2
C4H8O2 Ethyl acetate rCO 1.345   1.337 -0.008 2 3
OCSe Carbonyl selenide rC=O 1.159   1.151 -0.008 1 2
HClO4 perchloric acid rOH 0.980   0.972 -0.008 3 6
SiH2Cl2 dichlorosilane rSiH 1.480 ±0.015 1.472 -0.008 1 2
N3 azide radical rNN 1.181   1.173 -0.008 1 2
CH3CH(CH3)CH3 Isobutane rCH 1.100   1.092 -0.008 3 6
CH2CHCH2CH2Cl 1-Butene, 4-chloro- rCC 1.508   1.500 -0.008 2 6
CHF3 Methane, trifluoro- rCH 1.091 ±0.014 1.083 -0.008 1 2
CH2O2 Dioxirane rCO 1.388 ±0.004 1.380 -0.008 1 4
C5H8 Cyclobutane, methylene- rCC 1.524   1.516 -0.008 1 3
C4H8O2 Ethyl acetate rCC 1.508   1.500 -0.008 1 2
CFCl3 Trichloromonofluoromethane rCCl 1.764 ±0.001 1.756 -0.007 1 3
CH2NN diazomethane rC=N 1.300   1.293 -0.007 1 2
CH3CH2CHO Propanal rCH 1.096   1.089 -0.007 1 5
C3H4N2 1H-Pyrazole rCH 1.082   1.075 -0.007 1 2
CH3COCl Acetyl Chloride rCC 1.506   1.499 -0.007 1 2
CH3ONO Methyl nitrite rCH 1.090   1.083 -0.007 1 3
SeO2 Selenium dioxide rSeO 1.607 ±0.001 1.600 -0.007 1 2
CH3ONO Methyl nitrite rCO 1.437   1.430 -0.007 1 2
CH2CHCH2CH3 1-Butene rCC 1.536   1.529 -0.007 1 2
C3H4N2 1H-Pyrazole rCH 1.083   1.076 -0.007 5 6
CH3NHCH3 Dimethylamine rCH 1.098   1.091 -0.007 3 7
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.097   1.090 -0.007 5 6
CH2ClCH2Cl Ethane, 1,2-dichloro- rCCl 1.790   1.783 -0.007 1 3
CH3OCH3 Dimethyl ether rCO 1.411 ±0.001 1.405 -0.006 1 2
CH2C(CH3)CH3 1-Propene, 2-methyl- rCH 1.088   1.082 -0.006 2 3
CH2PH Phosphaethene rCH 1.090 ±0.015 1.084 -0.006 1 3
C3H6O 2-Propen-1-ol rCH 1.102 ±0.020 1.096 -0.006 1 6
CH3NC methyl isocyanide rCH 1.094   1.088 -0.006 1 4
C4H6S Thiophene, 2,5-dihydro- rCH 1.095   1.089 -0.006 2 6
CH3NO nitrosomethane rCH 1.094   1.088 -0.006 1 4
C3H4N2 1H-Pyrazole rCH 1.080   1.074 -0.006 3 4
C6H8 1,4-Cyclohexadiene rCH 1.100   1.094 -0.006 1 11
LiO lithium oxide rLiO 1.688   1.682 -0.006 1 2
C4H8O2 Ethyl acetate rCC 1.515   1.509 -0.006 5 6
HO2 Hydroperoxy radical rOO 1.331   1.325 -0.006 1 2
CFCl3 Trichloromonofluoromethane rCF 1.345 ±0.003 1.339 -0.006 1 2
CH3CCH propyne rCH 1.096   1.090 -0.006 1 5
CH3NO3 Methyl nitrate rCH 1.088   1.082 -0.006 5 6
C3H7SH 1-Propanethiol rCC 1.529   1.524 -0.005 7 10
CH2CO Ketene rCH 1.083   1.077 -0.005 1 4
CH3CH2CH2CH3 Butane rCC 1.531   1.526 -0.005 1 2
PO Phosphorus monoxide rP=O 1.476   1.471 -0.005 1 2
ClCN chlorocyanogen rC#N 1.161   1.155 -0.005 2 3
CH2FCl fluorochloromethane rCH 1.090 ±0.010 1.085 -0.005 1 4
CH2O2 Dioxirane rCH 1.090 ±0.002 1.085 -0.005 1 2
C4H10O Ethoxy ethane rCC 1.517   1.512 -0.005 2 4
CBr4 Carbon tetrabromide rCBr 1.942 ±0.002 1.937 -0.005 1 2
H2CSe Selenoformaldehyde rHC 1.090   1.085 -0.005 1 3
CH2PH Phosphaethene rCH 1.090 ±0.015 1.085 -0.005 1 4
PN Phosphorus mononitride rP#N 1.491   1.486 -0.005 1 2
BrF3 Bromine trifluoride rFBr 1.810 ±0.000 1.805 -0.005 1 3
C4H10O Ethoxy ethane rCO 1.411   1.406 -0.005 1 2
C5H7N Cyclobutanecarbonitrile rCC 1.551   1.546 -0.005 3 6
CH3CH2CHO Propanal rCC 1.509   1.504 -0.005 2 3
C10H8 Azulene rCH 1.084   1.079 -0.005 4 14
C4H10O Ethoxy ethane rCH 1.100   1.095 -0.005 2 6
CH3CHS Thioacetaldehyde rCH 1.098   1.093 -0.005 2 6
CH3CHFCH3 2-Fluoropropane rCH 1.094 ±0.005 1.089 -0.005 4 10
CH3OC2H5 Ethane, methoxy- rCH 1.099 ±0.007 1.094 -0.005 1 6
CH3CHFCH3 2-Fluoropropane rCH 1.093 ±0.006 1.088 -0.005 4 8
C2H5F fluoroethane rCH 1.095 ±0.007 1.091 -0.004 1 4
CS carbon monosulfide rC#S 1.535   1.531 -0.004 1 2
C5H6 1-Buten-3-yne, 2-methyl- rCC 1.445   1.441 -0.004 7 8
CH2 Methylene rCH 1.085   1.081 -0.004 1 2
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCO 1.416   1.412 -0.004 1 5
NH2SH Thiohydroxylamine rSH 1.344 ±0.029 1.340 -0.004 2 3
CH3NH2 methyl amine rNH 1.018 ±0.001 1.014 -0.004 2 6
C2HF3 Trifluoroethylene rCF 1.316 ±0.011 1.312 -0.004 1 3
C2H2ClF 1-chloro-1-fluoroethylene rCH 1.082 ±0.001 1.078 -0.004 2 5
CH2NN diazomethane rN=N 1.139   1.135 -0.004 2 3
CH3CHClCH3 Propane, 2-chloro- rCH 1.091   1.087 -0.004 2 5
C4H10O Propane, 2-methoxy- rCH 1.095   1.091 -0.004 1 2
HOCl hypochlorous acid rOH 0.973 ±0.002 0.970 -0.004 1 2
C4H10O Propane, 2-methoxy- rCO 1.422   1.418 -0.004 5 14
HSiCl Chlorosilylene rSiH 1.525 ±0.005 1.521 -0.004 1 3
C2H6O2S Dimethyl sulfone rCS 1.777 ±0.006 1.773 -0.004 1 4
C10H8 Azulene rCH 1.080   1.076 -0.004 9 17
CH3OC2H5 Ethane, methoxy- rCH 1.092 ±0.007 1.088 -0.004 4 11
H2CS Thioformaldehyde rC=S 1.611   1.607 -0.004 1 2
CH3OC2H5 Ethane, methoxy- rCH 1.100 ±0.003 1.096 -0.004 3 8
C4H6 Cyclobutene rCC 1.517   1.513 -0.004 1 3
C2H2+ acetylene cation rC=C 1.253 ±0.001 1.249 -0.003 1 2
CH3CH2CHO Propanal rCC 1.523   1.520 -0.003 1 2
C5H8O Methyl cyclopropyl ketone rCC 1.510   1.507 -0.003 2 3
CH3COCl Acetyl Chloride rC=O 1.187   1.184 -0.003 1 3
CH3OCH3 Dimethyl ether rCH 1.099 ±0.001 1.096 -0.003 2 6
C4H8 cyclobutane rCH 1.093   1.090 -0.003 1 5
C4H6 Cyclobutene rCH 1.094   1.091 -0.003 3 7
C5H10 Cyclopropane, 1,1-dimethyl- rCC 1.514   1.511 -0.003 1 4
C4H10O Ethoxy ethane rCH 1.092   1.089 -0.003 4 10
P2 Phosphorus diatomic rP#P 1.893   1.891 -0.003 1 2
HCl+ hydrogen chloride cation rHCl 1.315   1.312 -0.003 1 2
CH3NC methyl isocyanide rCN 1.426 ±0.003 1.423 -0.003 1 2
C3H8 Propane rCH 1.096   1.093 -0.003 1 4
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.092   1.089 -0.003 1 3
CF3COOH trifluoroacetic acid rC=O 1.192 ±0.003 1.189 -0.003 2 4
BeS beryllium sulfide rBe=S 1.742   1.739 -0.003 1 2
C4H8O2 Ethyl acetate rC=O 1.203   1.200 -0.003 2 4
C5H8 Bicyclo[2.1.0]pentane rCC 1.528   1.526 -0.002 1 3
CH3CHS Thioacetaldehyde rCH 1.090   1.088 -0.002 2 5
CH3OCHO methyl formate rCH 1.101   1.099 -0.002 3 8
CH3OCHO methyl formate rCH 1.086   1.084 -0.002 1 5
C4H10O Ethoxy ethane rCH 1.090   1.088 -0.002 4 12
CH2Cl2 Methylene chloride rCH 1.085 ±0.002 1.083 -0.002 1 2
C3H3NO Oxazole rCH 1.073 ±0.001 1.071 -0.002 5 8
C5H10 2-Pentene, (Z)- rCH 1.092   1.090 -0.002 1 2
O2 Oxygen diatomic rO=O 1.208   1.206 -0.002 1 2
CH3NO nitrosomethane rCH 1.092   1.090 -0.002 1 5
NH4+ ammonium cation rHN 1.029 ±0.000 1.027 -0.002 1 2
C3H3NO Oxazole rCH 1.075 ±0.001 1.073 -0.002 2 6
C3H3NO Oxazole rCH 1.075 ±0.001 1.073 -0.002 4 7
CBrClF2 Methane, bromochlorodifluoro- rCBr 1.932 ±0.004 1.930 -0.002 1 2
C3H6O 2-Propen-1-ol rCH 1.096 ±0.030 1.094 -0.002 1 5
SiS silicon monosulfide rSiS 1.929 ±0.000 1.927 -0.002 1 2
BS boron sulfide rBS 1.609   1.607 -0.002 1 2
C6H6 Fulvene rCH 1.080 ±0.005 1.078 -0.002 5 11
SiC silicon monocarbide rCSi 1.722   1.720 -0.002 1 2
C4H8 cyclobutane rCH 1.091   1.089 -0.002 1 6
C6H6 Fulvene rCC 1.476 ±0.008 1.474 -0.002 5 6
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.090   1.088 -0.002 9 11
AsF3 Arsenic trifluoride rAsF 1.706 ±0.002 1.705 -0.001 1 2
C4H6 Cyclobutene rCH 1.083   1.082 -0.001 1 5
CH2CHF Ethene, fluoro- rCH 1.082   1.081 -0.001 1 4
BO boron monoxide rB=O 1.205   1.203 -0.001 1 2
GeS Germanium monosulfide rS=Ge 2.012 ±0.000 2.011 -0.001 1 2
CH3CH(CH3)CH3 Isobutane rCH 1.092   1.091 -0.001 3 9
NH3BF3 Amminetrifluoroboron rBN 1.673   1.672 -0.001 1 2
C3H7SH 1-Propanethiol rCH 1.090   1.089 -0.001 8 10
OCSe Carbonyl selenide rC=Se 1.709   1.708 -0.001 1 3
CH3CHClCH3 Propane, 2-chloro- rCH 1.092   1.091 -0.001 3 6
C2H5N Aziridine rCH 1.083   1.082 -0.001 3 5
C3H6 Cyclopropane rCH 1.083   1.082 -0.001 1 4
CH2NN diazomethane rCH 1.075   1.074 -0.001 1 4
C10H8 Azulene rCH 1.083   1.082 -0.001 5 15
C3H6 Cyclopropane rCC 1.501   1.500 -0.001 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.092   1.091 -0.001 1 3
CH3CSNH2 Ethanethioamide rC=S 1.647 ±0.002 1.646 -0.001 1 2
HNCNH diiminomethane rC=N 1.224 ±0.001 1.223 -0.001 1 2
P2H4 Diphosphine rPH 1.417   1.416 -0.001 1 3
FNO2 Nitryl fluoride rN=O 1.180 ±0.005 1.179 -0.001 1 3
C10H8 Azulene rCH 1.081   1.081 -0.001 1 11
COBr2 Carbonic dibromide rC=O 1.172 ±0.003 1.171 -0.001 1 2
C2H5F fluoroethane rCH 1.090 ±0.007 1.089 -0.001 2 7
C3H7SH 1-Propanethiol rCH 1.092   1.091 -0.001 5 7
CCl2O Phosgene rC=O 1.177   1.176 -0.001 1 2
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.089   1.088 -0.001 9 10
C6H6 Fulvene rCH 1.078 ±0.005 1.077 -0.001 3 9
C2H5N Aziridine rCH 1.084   1.084 0.000 3 6
SF4 Sulfur tetrafluoride rSF 1.646 ±0.003 1.646 0.000 1 2
CCl2O Phosgene rCCl 1.737   1.736 0.000 2 3
C2H5F fluoroethane rCH 1.091 ±0.007 1.091 0.000 2 6
CH2Cl2 Methylene chloride rCCl 1.767 ±0.002 1.767 0.000 1 4
C2H2 Acetylene rC#C 1.203   1.203 0.000 1 2
S2+ sulfur diatomic cation rS=S 1.825 ±0.010 1.825 0.000 1 2
CH3CHS Thioacetaldehyde rCH 1.089   1.089 0.000 1 4
CHClCCl2 Trichloroethylene rCCl 1.712   1.713 0.001 2 6
C4H8O2 1,3-Dioxane rCO 1.393   1.394 0.001 1 2
MgF Magnesium monofluoride rMgF 1.750   1.751 0.001 1 2
CH3OC2H5 Ethane, methoxy- rCH 1.086 ±0.010 1.087 0.001 1 5
SOCl2 thionyl chloride rS=O 1.443 ±0.006 1.444 0.001 1 2
CH3OC2H5 Ethane, methoxy- rCO 1.407 ±0.004 1.408 0.001 2 3
O2+ diatomic oxygen cation rOO 1.116   1.117 0.001 1 2
CH3CH2Cl Ethyl chloride rCH 1.086   1.087 0.001 2 7
P2H4 Diphosphine rPH 1.414   1.415 0.001 1 4
CH3OC2H5 Ethane, methoxy- rCH 1.089 ±0.008 1.090 0.001 4 10
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.805 0.001 8 9
CH3ONO Methyl nitrite rN=O 1.182   1.183 0.001 6 7
C10H8 Azulene rC:C 1.484   1.485 0.001 7 8
C3H4 cyclopropene rCH 1.088   1.089 0.001 1 6
SiHCl3 Trichlorosilane rSiH 1.464   1.465 0.001 1 2
C5H10 Cyclopropane, 1,1-dimethyl- rCH 1.080   1.081 0.001 2 6
SSO Disulfur monoxide rS=S 1.884   1.886 0.001 2 3
CH3CHO Acetaldehyde rCH 1.086   1.087 0.001 2 5
PO2 Phosphorus dioxide rP=O 1.467   1.468 0.001 1 2
CH3CH2Cl Ethyl chloride rCH 1.090   1.092 0.001 1 3
HCCCN Cyanoacetylene rCH 1.062 ±0.001 1.064 0.002 4 5
LiF lithium fluoride rLiF 1.564 ±0.000 1.566 0.002 1 2
CH3CHFCH3 2-Fluoropropane rCH 1.088 ±0.006 1.090 0.002 4 6
C2H3Cl Ethene, chloro- rCH 1.079   1.081 0.002 2 5
CH3NHCH3 Dimethylamine rCH 1.098   1.100 0.002 3 5
AlS Aluminum sulfide rAlS 2.029   2.031 0.002 1 2
C2H2 Acetylene rCH 1.063   1.065 0.002 1 3
CH2CO Ketene rC=O 1.162   1.164 0.002 2 3
C8H8 cyclooctatetraene rCC 1.470 ±0.001 1.472 0.002 1 5
BeCl beryllium monochloride rBeCl 1.797   1.799 0.002 1 2
SiO Silicon monoxide rSiO 1.510 ±0.000 1.512 0.002 1 2
C6H6 Fulvene rCC 1.470 ±0.004 1.472 0.002 1 3
OPCl Phosphorus oxychloride rP=O 1.462 ±0.011 1.464 0.002 1 2
CH3OCH3 Dimethyl ether rCH 1.085 ±0.001 1.088 0.003 2 4
C3H6O 2-Propen-1-ol rCH 1.078 ±0.010 1.081 0.003 3 8
C10H8 naphthalene rC:C 1.410   1.413 0.003 2 3
CH3CH2OH Ethanol rCH 1.088   1.091 0.003 1 5
CH3SCH2CH3 Ethane, (methylthio)- rCH 1.087   1.090 0.003 1 2
C3H4 cyclopropene rCH 1.072   1.075 0.003 2 4
C2 Carbon diatomic rC=C 1.243   1.245 0.003 1 2
C5H8 Ethenylcyclopropane rCC 1.475   1.478 0.003 1 2
CH2CHF Ethene, fluoro- rCH 1.077   1.080 0.003 2 5
CH3Br methyl bromide rCH 1.082 ±0.001 1.085 0.003 1 3
CHF3 Methane, trifluoro- rCF 1.328 ±0.003 1.331 0.003 1 3
BCl boron monochloride rBCl 1.719 ±0.000 1.723 0.003 1 2
SOF4 Sulfur tetrafluoride oxide rFS 1.596 ±0.003 1.599 0.003 1 3
CH2F2 Methane, difluoro- rCH 1.084 ±0.003 1.087 0.003 1 2
CH3OCHO methyl formate rCO 1.334   1.337 0.003 2 3
CH3CCH propyne rCH 1.060   1.063 0.003 3 4
N2O3 Dinitrogen trioxide rN=O 1.142   1.146 0.004 1 3
C8H8 cyclooctatetraene rCH 1.079 ±0.001 1.083 0.004 1 9
CH3NC methyl isocyanide rC#N 1.166 ±0.003 1.170 0.004 2 3
NO+ nitric oxide cation rN=O 1.066   1.069 0.004 1 2
CN- cyanide anion rC#N 1.177 ±0.004 1.181 0.004 1 2
C2H2+ acetylene cation rCH 1.077 ±0.005 1.081 0.004 1 3
CH2F2 Methane, difluoro- rCF 1.351 ±0.001 1.355 0.004 1 4
CHClCCl2 Trichloroethylene rCCl 1.720   1.724 0.004 2 5
CCl2 dichloromethylene rCCl 1.711   1.715 0.004 1 2
HO2 Hydroperoxy radical rOH 0.971   0.975 0.004 1 3
CH3OCl methyl hypochlorite rCH 1.086 ±0.018 1.090 0.004 3 5
D2 Deuterium diatomic rDD 0.742   0.746 0.004 1 2
H2 Hydrogen diatomic rHH 0.741   0.746 0.004 1 2
CH2FCl fluorochloromethane rCCl 1.762 ±0.000 1.766 0.004 1 3
HD Deuterium hydride rDH 0.741   0.746 0.004 1 2
SeO Selenium monoxide rSeO 1.639 ±0.001 1.644 0.004 1 2
CH4 Methane rCH 1.087 ±0.001 1.091 0.004 1 2
BrF3 Bromine trifluoride rFBr 1.721   1.725 0.004 1 2
C4H5N (E)-2-Butenenitrile rCC 1.432   1.437 0.005 8 10
C2H5F fluoroethane rCC 1.505 ±0.007 1.510 0.005 1 2
BH3 boron trihydride rBH 1.190   1.195 0.005 1 2
SiH3F monofluorosilane rSiH 1.476   1.481 0.005 1 3
SiH3Cl chlorosilane rSiH 1.475   1.480 0.005 1 3
C2H3 vinyl rCH 1.085   1.090 0.005 2 4
CH3CH2O Ethoxy radical rCH 1.085   1.090 0.005 1 5
KF Potassium Fluoride rKF 2.171 ±0.000 2.177 0.005 1 2
CH3NH2 methyl amine rCH 1.093 ±0.000 1.098 0.005 1 3
CO Carbon monoxide rC#O 1.128 ±0.000 1.134 0.006 1 2
CH3CH2O Ethoxy radical rCH 1.086   1.092 0.006 1 4
CH3NHCH3 Dimethylamine rCH 1.084   1.090 0.006 3 9
HOCl hypochlorous acid rClO 1.697 ±0.001 1.703 0.006 1 3
BF3 Borane, trifluoro- rBF 1.307   1.313 0.006 1 2
C10H8 Azulene rC:C 1.377   1.383 0.006 5 7
N2 Nitrogen diatomic rN#N 1.098   1.104 0.006 1 2
C4H6 Methylenecyclopropane rCC 1.457   1.464 0.007 2 5
ClOF3 Chlorine trifluoride oxide rFCl 1.603 ±0.004 1.610 0.007 1 3
GeBr4 Germanium tetrabromide rGeBr 2.272 ±0.001 2.279 0.007 1 2
HClO4 perchloric acid rO=Cl 1.414 ±0.001 1.421 0.007 1 2
NF nitrogen fluoride rNF 1.317   1.324 0.007 1 2
AsF Arsenic monofluoride rFAs 1.736 ±0.001 1.743 0.007 1 2
OPCl Phosphorus oxychloride rPCl 2.059 ±0.004 2.066 0.007 1 3
C3H7N Cyclopropylamine rCH 1.080   1.088 0.008 1 2
DCl Hydrochloric acid-d rDCl 1.275 ±0.000 1.282 0.008 1 2
CHBr3 bromoform rCBr 1.924 ±0.005 1.932 0.008 1 3
HCl Hydrogen chloride rHCl 1.275 ±0.000 1.282 0.008 1 2
CF Fluoromethylidyne rCF 1.276   1.284 0.008 1 2
H2O Water rOH 0.958 ±0.000 0.966 0.008 1 2
NH2CONH2 Urea rNH 0.998   1.006 0.008 4 8
HCCl Chloromethylene rCCl 1.696 ±0.003 1.704 0.008 1 2
SO+ sulfur monoxide cation rO=S 1.424   1.432 0.008 1 2
CHF2Cl difluorochloromethane rCCl 1.747 ±0.010 1.755 0.008 1 3
CH2CHCH2CH3 1-Butene rCC 1.493   1.501 0.008 2 3
SiH4 Silane rSiH 1.480 ±0.000 1.488 0.008 1 2
AlF Aluminum monofluoride rAlF 1.654 ±0.000 1.663 0.008 1 2
CH Methylidyne rCH 1.120   1.128 0.008 1 2
HOBr Hypobromous acid rOH 0.961   0.969 0.008 1 2
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804   1.813 0.009 5 8
C5H8 Bicyclo[2.1.0]pentane rCC 1.507   1.516 0.009 1 2
B2 Boron diatomic rBB 1.590   1.599 0.009 1 2
NH Imidogen rNH 1.036   1.045 0.009 1 2
SSO Disulfur monoxide rS=O 1.456   1.465 0.009 1 2
BF Boron monofluoride rBF 1.267 ±0.000 1.276 0.009 1 2
HS Mercapto radical rSH 1.341   1.350 0.009 1 2
CH3CH2O Ethoxy radical rCH 1.088   1.097 0.009 2 7
NO- nitric oxide anion rN=O 1.258 ±0.010 1.267 0.009 1 2
Se2 Selenium diatomic rSe=Se 2.166 ±0.001 2.175 0.009 1 2
SiH2F2 difluorosilane rSiH 1.462   1.471 0.009 1 4
GaF Gallium monofluoride rFGa 1.774 ±0.000 1.784 0.009 1 2
SiH+ silicon monohydride cation rSiH 1.504   1.514 0.009 1 2
DS Mercapto-d rSD 1.341   1.350 0.009 1 2
BH Boron monohydride rBH 1.232   1.242 0.010 1 2
CH3CH2OH Ethanol rCH 1.086   1.096 0.010 2 8
AlCl Aluminum monochloride rAlCl 2.130 ±0.000 2.140 0.010 1 2
C5H10 2-Pentene, (Z)- rCC 1.490   1.500 0.010 8 14
CH2Br2 dibromomethane rCBr 1.925 ±0.002 1.935 0.010 1 4
BeH2 beryllium dihydride rBeH 1.326 ±0.000 1.337 0.010 1 2
DO Hydroxyl-d rDO 0.970   0.980 0.010 1 2
SiBr+ Silicon monobromide cation rSiBr 2.095 ±0.000 2.106 0.010 1 2
OH Hydroxyl radical rOH 0.970   0.980 0.010 1 2
GaAs Gallium arsenide rGa#As 2.530 ±0.020 2.541 0.011 1 2
C3O2 Carbon suboxide rC=O 1.146   1.157 0.011 2 4
CH3SeH Methane selenol rSeH 1.473 ±0.020 1.484 0.011 1 3
AlBr Aluminum monobromide rAlBr 2.295   2.306 0.011 1 2
Si(CH3)4 tetramethylsilane rSiC 1.875 ±0.002 1.886 0.011 1 2
CH3CH(NH2)COOH Alanine rCC 1.509   1.520 0.011 2 3
ClCN chlorocyanogen rCCl 1.629   1.640 0.011 1 2
F2SO Thionyl Fluoride rFS 1.585 ±0.000 1.597 0.011 1 3
SeCl2 Selenium Dichloride rClSe 2.157 ±0.003 2.169 0.012 1 2
BeH beryllium monohydride rBeH 1.343   1.354 0.012 1 2
AsF5 Arsenic pentafluoride rAsF 1.656 ±0.004 1.668 0.012 1 2
SiH3+ Silyl cation rSiH 1.460 ±0.010 1.472 0.012 1 2
GeO Germanium monoxide rOGe 1.625   1.637 0.012 1 2
AlNC Aluminum isocyanide rAlN 1.855 ±0.005 1.867 0.012 1 2
SiH3Cl chlorosilane rSiCl 2.051   2.063 0.012 1 2
N(CH3)3 Trimethylamine rCH 1.088   1.101 0.013 2 5
AlC Aluminum carbide rC=Al 1.955   1.968 0.013 1 2
F2SO Thionyl Fluoride rO=S 1.413 ±0.000 1.426 0.013 1 2
HF+ hydrogen fluoride cation rHF 1.014   1.027 0.013 1 2
PH phosphorus monohydride rPH 1.422   1.435 0.013 1 2
HSSSH trisulfane rSS 2.054 ±0.000 2.067 0.013 1 2
S2 Sulfur diatomic rS=S 1.889   1.903 0.014 1 2
DF Hydrofluoric acid-d rDF 0.917 ±0.000 0.931 0.014 1 2
LiOH lithium hydroxide rLiO 1.582   1.595 0.014 1 2
BrF Bromine monofluoride rFBr 1.759 ±0.000 1.773 0.014 1 2
SiH2Cl2 dichlorosilane rSiCl 2.033 ±0.003 2.047 0.014 1 4
BeF Beryllium monofluoride rBeF 1.361   1.375 0.014 1 2
HF Hydrogen fluoride rHF 0.917 ±0.000 0.931 0.014 1 2
SiHCl3 Trichlorosilane rSiCl 2.020   2.034 0.014 1 3
ScH Scandium monohydride rScH 1.775 ±0.000 1.790 0.015 1 2
HS- mercapto anion rSH 1.343   1.358 0.015 1 2
BrF5 bromine pentafluoride rFBr 1.689 ±0.008 1.704 0.015 1 2
LiNH2 lithium amide rLiN 1.736 ±0.003 1.751 0.015 1 2
HOBr Hypobromous acid rBrO 1.834   1.849 0.015 2 3
SiH Silylidyne rSiH 1.520   1.535 0.015 1 2
SiF4 Silicon tetrafluoride rSiF 1.554   1.570 0.016 1 2
NaBr Sodium Bromide rNaBr 2.502 ±0.000 2.518 0.016 1 2
SiCl Clorosilylidyne rSiCl 2.061 ±0.000 2.077 0.016 1 2
MgO magnesium oxide rMgO 1.749   1.765 0.016 1 2
SiF silicon monofluoride rSiF 1.604   1.621 0.016 1 2
OH- hydroxide anion rOH 0.964   0.980 0.016 1 2
MgOH magnesium hydroxide rOH 0.940   0.957 0.017 1 3
C3H5 Allyl radical rCH 1.069   1.086 0.017 1 2
PO- phosphorus monoxide anion rOP 1.540   1.557 0.017 1 2
SiH3F monofluorosilane rSiF 1.595   1.611 0.017 1 2
MgS magnesium sulfide rMgS 2.143   2.159 0.017 1 2
SiF2 Silicon difluoride rFSi 1.590 ±0.000 1.607 0.017 1 2
C5H8O Cyclopentanone rCC 1.504   1.521 0.017 2 3
SO Sulfur monoxide rS=O 1.481   1.498 0.017 1 2
CH3Br methyl bromide rCBr 1.934 ±0.000 1.951 0.017 1 2
ClFO3 Perchloryl fluoride rFCl 1.598   1.616 0.018 1 2
HSiCl Chlorosilylene rSiCl 2.067 ±0.003 2.085 0.018 1 2
SCl2 Sulfur dichloride rSCl 2.013 ±0.001 2.031 0.018 1 2
ClFO3 Perchloryl fluoride rCl=O 1.400   1.418 0.018 2 3
Cl2+ chlorine diatomic cation rClCl 1.892   1.910 0.018 1 2
C2H Ethynyl radical rCH 1.047   1.065 0.018 1 3
SOF4 Sulfur tetrafluoride oxide rFS 1.539 ±0.003 1.557 0.018 1 5
HSe Selenium monohydride rSeH 1.475 ±0.010 1.494 0.019 1 2
SF4 Sulfur tetrafluoride rSF 1.545 ±0.003 1.564 0.019 1 4
PF2 Phosphorus difluoride rPF 1.579   1.598 0.019 1 2
AlH aluminum monohydride rAlH 1.648   1.667 0.019 1 2
CH2C(CH3)OCH3 1-Propene, 2-methoxy- rCO 1.353   1.372 0.019 5 10
C2H6O2S Dimethyl sulfone rS=O 1.431 ±0.004 1.450 0.019 1 2
C5H10 2-Pentene, (E)- rCC 1.484   1.503 0.019 4 11
GaBr Gallium monobromide rGaBr 2.352 ±0.000 2.372 0.020 1 2
C3O2 Carbon suboxide rC=C 1.251   1.271 0.020 1 2
ClF Chlorine monofluoride rFCl 1.628 ±0.000 1.649 0.021 1 2
MgCl magnesium monochloride rMgCl 2.199   2.220 0.021 1 2
SF Monosulfur monofluoride rSF 1.599   1.621 0.021 1 2
CCl carbon monochloride rCCl 1.649   1.671 0.022 1 2
PF phosphorus monofluoride rFP 1.593   1.615 0.022 1 2
HBr+ hydrogen bromide cation rHBr 1.448   1.471 0.022 1 2
AsH Arsenic monohydride rAsH 1.535 ±0.001 1.558 0.024 1 2
LiBr Lithium Bromide rLiBr 2.170 ±0.000 2.195 0.024 1 2
HBr hydrogen bromide rHBr 1.414 ±0.000 1.439 0.025 1 2
CaOH Calcium monohydroxide rOH 0.930 ±0.007 0.956 0.026 2 3
PCl phosphorus chloride rPCl 2.018   2.043 0.026 1 2
ClO Monochlorine monoxide rClO 1.596 ±0.001 1.622 0.026 1 2
H2Se Hydrogen selenide rSeH 1.460   1.486 0.026 1 2
HClO4 perchloric acid rO=Cl 1.404 ±0.001 1.430 0.026 1 4
Cl2 Chlorine diatomic rClCl 1.988   2.014 0.026 1 2
CFCl chlorofluoromethylene rCCl 1.714   1.741 0.027 1 3
MgOH magnesium hydroxide rMgO 1.767   1.794 0.027 1 2
C5H10 2-Pentene, (Z)- rCH 1.058   1.085 0.027 12 13
PF+ phosphorus monofluoride cation rFP 1.500   1.528 0.028 1 2
GeCl Germanium monochloride rClGe 2.164 ±0.000 2.193 0.029 1 2
GeH3F monofluorogermane rGeF 1.731 ±0.000 1.760 0.029 1 2
GeH3F monofluorogermane rGeH 1.515 ±0.000 1.546 0.031 1 3
GeF Germanium monofluoride rFGe 1.745   1.776 0.031 1 2
SCl sulfur monochloride rSCl 1.975   2.007 0.031 1 2
BrCl Bromine monochloride rClBr 2.136 ±0.000 2.168 0.032 1 2
NaCl Sodium Chloride rNaCl 2.361 ±0.000 2.392 0.032 1 2
AsH3 Arsine rAsH 1.511 ±0.000 1.544 0.033 1 2
Br2 Bromine diatomic rBrBr 2.281   2.314 0.033 1 2
TiCl Titanium Monochloride rClTi 2.265 ±0.000 2.298 0.033 1 2
C2Cl2 dichloroacetylene rCCl 1.612 ±0.030 1.646 0.034 1 3
MgH magnesium monohydride rMgH 1.730   1.764 0.034 1 2
KrH+ Protonated Krypton rHKr 1.421 ±0.000 1.456 0.035 1 2
GeH germylidene rGeH 1.588   1.624 0.036 1 2
GeF+ Germanium monofluoride cation rFGe 1.665 ±0.000 1.703 0.037 1 2
AlN Aluminum nitride rN#Al 1.786   1.829 0.042 1 2
MgH+ magnesium monohydride cation rMgH 1.652   1.695 0.043 1 2
NCl nitrogen monochloride rNCl 1.611 ±0.000 1.655 0.044 1 2
NaH sodium hydride rNaH 1.887 ±0.000 1.931 0.045 1 2
LiCl lithium chloride rLiCl 2.021 ±0.000 2.066 0.046 1 2
BrO Bromine monoxide rOBr 1.718   1.769 0.051 1 2
KBr Potassium Bromide rKBr 2.821 ±0.000 2.872 0.051 1 2
AlO Aluminum monoxide rAlO 1.618   1.671 0.053 1 2
LiH Lithium Hydride rLiH 1.595 ±0.000 1.650 0.055 1 2
Li2 Lithium diatomic rLiLi 2.673   2.732 0.059 1 2
C4H8O2 Ethyl acetate rCO 1.448   1.509 0.061 5 6
NaLi lithium sodium rLiNa 2.889   2.950 0.061 1 2
CaF Calcium monofluoride rFCa 1.967 ±0.001 2.039 0.072 1 2
KCl Potassium Chloride rKCl 2.667 ±0.000 2.744 0.077 1 2
He2+ helium diatomic cation rHeHe 1.081 ±0.001 1.162 0.081 1 2
KH Potassium hydride rKH 2.243 ±0.001 2.334 0.092 1 2
CaOH Calcium monohydroxide rOCa 1.976 ±0.004 2.070 0.094 1 2
CaC Calcium monocarbide rC#Ca 2.302   2.407 0.106 1 2
CaBr Calcium monobromide rCaBr 2.594 ±0.000 2.712 0.118 1 2
CaCl calcium monochloride rClCa 2.437   2.568 0.131 1 2
CaH Calcium monohydride rCaH 2.003 ±0.000 2.143 0.141 1 2
FO Oxygen monofluoride rFO 1.354   1.499 0.144 1 2
CrH Chromium hydride rHCr 1.655 ±0.001 1.803 0.148 1 2
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 ±0.040 2.272 0.232 1 3
CaO Calcium monoxide rOCa 1.822   2.093 0.270 1 2
C4H10O Methyl propyl ether rCH 1.099   1.401 0.302 1 2
524 molecules.