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Compare Bonds

18 10 26 16 45

PBEPBEultrafine/6-31G* for rCC

Histogram of Bond length differences (in Å) vs number of species


Differences greater than 1.800 are in the 1.800 bin. Differences less than -0.600 are in the -0.600 bin.

histogram chart 400
histogram chart 350 histogram chart
histogram chart 300 histogram chart
histogram chart 250 histogram chart
histogram chart 200 histogram chart
histogram chart 150 histogram chart
histogram chart 100 histogram chart
histogram chart 50 histogram chart
histogram chart 0 histogram chart histogram chart histogram chart histogram chart
-0.600 -0.400 -0.200 0.000 0.200 0.400 0.600 0.800 1.000 1.200 1.400 1.600 1.800
bond length difference calc. - exp. (Å)

  Species Name Difference (Å)
Most negative difference C4H10O Methyl propyl ether-0.425
Most positive difference C4H6 1-Methylcyclopropene0.800

Bond lengths
Click on entry for experimental details.

Species Name Experimental (Å) Difference (Å)
C4H10O Methyl propyl ether 1.530 -0.425
C4H6 1-Methylcyclopropene 1.515 -0.410
CH2ClCHCl2 1,1,2-trichloroethane 1.580 -0.055
CH3CHNOH Acetaldoxime 1.550 -0.053
C5H10 2-Pentene, (E)- 1.576 -0.045
C3H5 Allyl radical 1.428 -0.036
C5H6 Bicyclo[2.1.0]pent-2-ene 1.560 -0.035
C3H3NO Isoxazole 1.356 -0.032
C5H6 1,3-Cyclopentadiene 1.540 -0.031
CH3CCl3 Ethane, 1,1,1-trichloro- 1.550 -0.030
C5H8 Bicyclo[2.1.0]pentane 1.536 -0.028
C2Cl2 dichloroacetylene 1.246 -0.027
C4H5N Cyclopropanecarbonitrile 1.472 -0.026
C5H8 Spiropentane 1.557 -0.024
CH3CHCl2 Ethane, 1,1-dichloro- 1.540 -0.023
C5H10 2-Pentene, (Z)- 1.561 -0.021
C5H6S Thiophene, 3-methyl- 1.530 -0.021
CH2CHCHCH2 1,3-Butadiene 1.476 -0.020
C6H5CCH phenylacetylene 1.448 -0.019
C5H8O Cyclopentanone 1.557 -0.019
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile 1.514 -0.016
C12H8 biphenylene 1.524 -0.015
C4H5NO 3-Methylisoxazole 1.514 -0.015
C5H6 1-Buten-3-yne, 2-methyl- 1.445 -0.015
C4H5NO Isoxazole, 5-methyl- 1.505 -0.014
C4H6S Thiophene, 2,5-dihydro- 1.518 -0.014
C3H5ClO Oxirane, (chloromethyl)- 1.523 -0.014
CHClCHCl Ethene, 1,2-dichloro-, (E)- 1.354 -0.013
C5H9N Pentanenitrile 1.478 -0.013
C4H2 Diacetylene 1.378 -0.013
C6H8 Bicyclo[3.1.0]hex-2-ene 1.530 -0.013
C3F6 hexafluoropropene 1.513 -0.012
C2H3CCH 1-Buten-3-yne 1.434 -0.012
C4H5N Cyclopropanecarbonitrile 1.513 -0.012
CH2CHCH3 Propene 1.353 -0.011
CH3CHS Thioacetaldehyde 1.506 -0.011
CH2ClCH2Cl Ethane, 1,2-dichloro- 1.531 -0.010
C2N2 Cyanogen 1.389 -0.010
CH2ClCCCl 1,3-dichloropropyne 1.456 -0.010
C4H4N2 Succinonitrile 1.561 -0.010
C9H8 Indene 1.415 -0.010
CH3CHClCH2CH3 Butane, 2-chloro- 1.534 -0.010
CH3CH(CH3)CN Propanenitrile, 2-methyl- 1.481 -0.009
CH2ClCH2CH2CH3 Butane, 1-chloro- 1.533 -0.009
C6H12 (E)-3-methylpent-2-ene 1.551 -0.009
CH2CClCHCH2 1,3-Butadiene, 2-chloro- 1.469 -0.009
C6H5CH2CH3 Ethylbenzene 1.524 -0.009
C6H8 (Z)-hexa-1,3,5-triene 1.458 -0.009
C5H6 Bicyclo[2.1.0]pent-2-ene 1.530 -0.008
C4H8O2 1,3-Dioxolane, 2-methyl- 1.522 -0.008
C4N2 2-Butynedinitrile 1.370 -0.008
C3H7N Cyclopropylamine 1.520 -0.008
CH3CCCH3 2-Butyne 1.468 -0.008
C2F6 hexafluoroethane 1.560 -0.008
CH2CF2 Ethene, 1,1-difluoro- 1.340 -0.007
C6H10O cyclohexanone 1.545 -0.007
C7H12 Norbornane 1.573 -0.007
CF3CN Acetonitrile, trifluoro- 1.492 -0.007
C2H5NO3 Nitric acid, ethyl ester 1.528 -0.007
C2H6O2 1,2-Ethanediol 1.530 -0.006
C4H5N (E)-2-Butenenitrile 1.501 -0.006
CH3COOH Acetic acid 1.517 -0.006
CH3CH(CH3)ONO Isopropyl nitrite 1.534 -0.006
CH3CHCHCH3 2-Butene, (E)- 1.508 -0.006
C6H8 Bicyclo[2.1.1]hex-2-ene 1.544 -0.006
C3H8O2 Propylene glycol 1.540 -0.006
C4H5N (E)-2-Butenenitrile 1.432 -0.006
H2CCCCH2 Butatriene 1.283 -0.005
C5H6 Propellane 1.596 -0.005
C5H8 Cyclopentene 1.350 -0.005
C2H6 Ethane 1.536 -0.005
CH2CCHCH3 1,2-Butadiene 1.515 -0.004
C5H10 Cyclopentane 1.546 -0.004
C4H5NO Isoxazole, 5-methyl- 1.427 -0.004
C6H12 (E)-3-methylpent-2-ene 1.511 -0.004
C3H6S Thietane 1.549 -0.004
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile 1.518 -0.003
C3H6O Propylene oxide 1.513 -0.003
C12H8 biphenylene 1.428 -0.003
CH3CHCHCH3 2-Butene, (Z)- 1.506 -0.003
C5H10 Cyclopropane, 1,1-dimethyl- 1.520 -0.003
CH2CHCH2CH2Cl 1-Butene, 4-chloro- 1.508 -0.003
CH2SHCH2SH 1,2-Ethanedithiol 1.530 -0.003
C10H8 Azulene 1.414 -0.003
C6H4Cl2 1,3-dichlorobenzene 1.404 -0.003
CH3COCl Acetyl Chloride 1.506 -0.002
C6H8 1,4-Cyclohexadiene 1.347 -0.002
C3H7SH 1-Propanethiol 1.536 -0.002
H2NCH2COOH Glycine 1.532 -0.002
C2H5CN ethyl cyanide 1.468 -0.002
CH3CHCHCH3 2-Butene, (E)- 1.347 -0.002
C10H8 Azulene 1.407 -0.002
C5H8 Cyclopentene 1.518 -0.002
C3H5ClO Oxirane, (chloromethyl)- 1.475 -0.002
C3H4O Cyclopropanone 1.575 -0.002
C5H8 1,3-Butadiene, 2-methyl- 1.512 -0.002
CHCCH2CH3 1-Butyne 1.544 -0.002
C5H9N Pentanenitrile 1.536 -0.001
C5H8O 2H-Pyran, 3,4-dihydro- 1.510 -0.001
C5H6 Propellane 1.525 -0.001
C4H6 Methylenecyclopropane 1.332 -0.001
C12H8 biphenylene 1.432 -0.001
C5H10O 2-Butanone, 3-methyl- 1.525 -0.001
CH3CCH propyne 1.460 -0.001
CH3SCH2CH3 Ethane, (methylthio)- 1.530 -0.001
CH3CH2SH ethanethiol 1.528 -0.001
C3H4O Methylketene 1.518 -0.001
CH2CHCHClCH3 1-Butene, 3-chloro- 1.503 -0.001
C3H6O 2-Propen-1-ol 1.502 -0.001
CH3COCH2CH3 2-Butanone 1.531 -0.001
CHOCHCHCH3 2-Butenal 1.501 -0.001
C6H8 1,4-Cyclohexadiene 1.511 -0.001
C6H5Cl chlorobenzene 1.402 -0.000
CH3COF Acetyl fluoride 1.503 -0.000
C2H8N2 Ethylenediamine 1.545 -0.000
C6H8 Bicyclo[3.1.0]hex-2-ene 1.494 -0.000
C6H8 (Z)-hexa-1,3,5-triene 1.368 -0.000
C4H4Se selenophene 1.433 -0.000
C4H8 cyclobutane 1.555 -0.000
C6H10 cyclohexene 1.510 -0.000
C2H4 Ethylene 1.339 -0.000
C2H5Br Ethyl bromide 1.518 -0.000
CH3CCl(CH3)CH3 Propane, 2-chloro-2-methyl- 1.530 0.000
CH2CHCH2CH3 1-Butene 1.342 0.000
C6H5CH3 toluene 1.513 0.000
CH3CCl2CH3 Propane, 2,2-dichloro- 1.523 0.000
C5H6 Cyclopropylacetylene 1.503 0.000
C4H6 Methylenecyclopropane 1.542 0.000
C5H8 1,4-Pentadiene 1.511 0.001
CH3OC2H5 Ethane, methoxy- 1.521 0.001
C7H12 Norbornane 1.546 0.001
C5H5N Pyridine 1.400 0.001
C5H8 Cyclobutane, methylene- 1.524 0.001
C5H12O Butane, 1-methoxy- 1.532 0.001
C2H3 vinyl 1.316 0.001
C7H16 heptane 1.534 0.001
C2H2O4 Oxalic Acid 1.544 0.001
C4H6S Thiophene, 2,5-dihydro- 1.340 0.001
CH2CCHCH3 1,2-Butadiene 1.314 0.001
C6H8 Bicyclo[3.1.0]hex-2-ene 1.522 0.001
C5H8 1,2-Butadiene, 3-methyl- 1.514 0.001
C5H8 Bicyclo[1.1.1]pentane 1.557 0.002
C6H5NO2 Nitrobenzene 1.399 0.002
C5H6 Cyclopropylacetylene 1.527 0.002
CF2CCl2 difluorodichloroethylene 1.345 0.002
CH3CHCHCH3 2-Butene, (Z)- 1.346 0.002
C4H6 Cyclobutene 1.517 0.002
CH3CHFCH3 2-Fluoropropane 1.521 0.002
CH3CN Acetonitrile 1.458 0.002
C2H2N2O Furazan 1.421 0.002
CH3CHClCH3 Propane, 2-chloro- 1.522 0.002
CHCCH2CH3 1-Butyne 1.217 0.002
C5H8 Bicyclo[2.1.0]pentane 1.565 0.002
CH2C(CH3)CH3 1-Propene, 2-methyl- 1.507 0.002
C8H8 cubane 1.571 0.002
C6H12 (E)-3-methylpent-2-ene 1.349 0.003
C5H8 Ethenylcyclopropane 1.475 0.003
C3H7SH 1-Propanethiol 1.529 0.003
CH2CHCH2CH2Cl 1-Butene, 4-chloro- 1.339 0.003
C5H8 1,4-Pentadiene 1.339 0.003
C6H5CCH phenylacetylene 1.396 0.003
CH2CClCHCH2 1,3-Butadiene, 2-chloro- 1.344 0.003
C6H8 Bicyclo[3.1.0]hex-2-ene 1.529 0.003
CH3CSNH2 Ethanethioamide 1.512 0.003
C6H5Cl chlorobenzene 1.399 0.003
C3H3N acrylonitrile 1.426 0.003
C5H6S Thiophene, 3-methyl- 1.370 0.004
CH3COCH3 Acetone 1.520 0.004
C4H8O2 Ethyl acetate 1.515 0.004
C2H3Br vinyl bromide 1.332 0.004
CH2CHCH2CH2Cl 1-Butene, 4-chloro- 1.528 0.004
C6H6 Benzvalene 1.452 0.004
CH2CHCH2CH3 1-Butene 1.536 0.004
C4H4N2 Succinonitrile 1.465 0.004
C3H6O 2-Propen-1-ol 1.337 0.004
C5H8 1,3-Butadiene, 2-methyl- 1.463 0.004
C4H5N Pyrrole 1.382 0.004
C5H8 Ethenylcyclopropane 1.522 0.004
CH2CS Thioketene 1.314 0.004
C5H8 Cyclobutane, methylene- 1.557 0.004
CF3COOH trifluoroacetic acid 1.546 0.004
C2H2O2 Ethanedial 1.526 0.004
C5H12 Pentane 1.531 0.004
C6H6 Benzvalene 1.529 0.004
C3H4 cyclopropene 1.509 0.004
CH3CH2CH2CH3 Butane 1.531 0.005
C2H3Cl Ethene, chloro- 1.332 0.005
CH3CH2CHO Propanal 1.523 0.005
C5H12 Propane, 2,2-dimethyl- 1.537 0.005
C4H5NO 3-Methylisoxazole 1.362 0.005
C6H10O cyclohexanone 1.542 0.005
C4H10O Ethoxy ethane 1.517 0.005
C3H6O Propylene oxide 1.471 0.005
C4H6 Bicyclo[1.1.0]butane 1.498 0.005
C4H5NO 3-Methylisoxazole 1.427 0.005
C6H5CCH phenylacetylene 1.398 0.005
C10H16 adamantane 1.540 0.005
CH3CH2CHO Propanal 1.509 0.005
C2H4S Thiirane 1.484 0.005
C7H8 Norbornadiene 1.557 0.005
CH2CClCHCH2 1,3-Butadiene, 2-chloro- 1.344 0.005
C3H4O Cyclopropanone 1.475 0.005
CH2CHF Ethene, fluoro- 1.329 0.005
CH3CH2NH2 Ethylamine 1.531 0.005
C2Cl4 Tetrachloroethylene 1.354 0.006
C6H5CH2CH3 Ethylbenzene 1.535 0.006
C6H10 cyclohexene 1.530 0.006
C4H4O Furan 1.431 0.006
CH3CH(NH2)COOH Alanine 1.544 0.006
C6H6 Benzene 1.397 0.006
CH2C(CH3)OCH3 1-Propene, 2-methoxy- 1.501 0.006
CHCCH2CH3 1-Butyne 1.457 0.006
CH2CHCHClCH3 1-Butene, 3-chloro- 1.337 0.006
CH2CCH2 allene 1.308 0.006
C(CN)4 tetracyanomethane 1.484 0.006
C5H10 Cyclopropane, 1,1-dimethyl- 1.514 0.006
CH2CHCHO Acrolein 1.341 0.006
C6H4Cl2 1,4-dichlorobenzene 1.394 0.007
C6H10 cyclohexene 1.340 0.007
CHOCHCHCH3 2-Butenal 1.345 0.007
C10H8 Azulene 1.405 0.007
C10H8 Azulene 1.398 0.007
C4H6 Bicyclo[1.1.0]butane 1.497 0.007
C6H5CH3 toluene 1.395 0.007
CH2CHCH2F Allyl Fluoride 1.333 0.007
C4H8O2 Ethyl acetate 1.508 0.007
C4H10O Propane, 2-methoxy- 1.528 0.007
C5H8 Cyclobutane, methylene- 1.331 0.007
C4H6 Cyclobutene 1.566 0.007
C5H10O 2H-Pyran, tetrahydro- 1.531 0.007
C4H6O Cyclobutanone 1.556 0.007
C6H5CH3 toluene 1.395 0.007
C4H4S Thiophene 1.423 0.007
C3H8 Propane 1.526 0.007
C5H8 Spiropentane 1.482 0.007
C2H3CCH 1-Buten-3-yne 1.344 0.007
C5H8 Bicyclo[2.1.0]pentane 1.528 0.008
CH3CCCH3 2-Butyne 1.214 0.008
C4H4S Thiophene 1.370 0.008
C2H3CCH 1-Buten-3-yne 1.215 0.008
CH2CHCHClCH3 1-Butene, 3-chloro- 1.522 0.008
C4H4N2 Pyridazine 1.396 0.008
CH2CO Ketene 1.314 0.008
H2CCCCH2 Butatriene 1.318 0.008
C3H5Cl3 Propane, 1,2,3-trichloro- 1.524 0.008
C4H4N2 1,3-Diazine 1.393 0.008
C4H6 Cyclobutene 1.342 0.008
C6H12 Cyclohexane 1.530 0.008
C6H5OH phenol 1.398 0.009
C2H5N Aziridine 1.481 0.009
C2H2ClF 1-chloro-1-fluoroethylene 1.327 0.009
C3H4N2 1H-Pyrazole 1.417 0.009
C5H11N Piperidine 1.531 0.009
CH2CHCHO Acrolein 1.468 0.009
C6H5CH2CH3 Ethylbenzene 1.399 0.009
C7H8 Norbornadiene 1.336 0.009
C5H8O 2H-Pyran, 3,4-dihydro- 1.530 0.009
C4H4O Furan 1.361 0.009
C12H8 biphenylene 1.372 0.009
C10H8 naphthalene 1.420 0.009
C6H6 Benzvalene 1.503 0.009
C6H4Cl2 1,3-dichlorobenzene 1.392 0.009
C3H8O2 1,3-Propanediol 1.514 0.010
C6H10 cyclohexene 1.530 0.010
C3H3N acrylonitrile 1.339 0.010
C3H4 cyclopropene 1.296 0.010
CH3CH2OH Ethanol 1.512 0.010
C5H6 Cyclopropylacetylene 1.211 0.010
CH3CHO Acetaldehyde 1.501 0.010
C6H6 Benzvalene 1.339 0.010
CHOCHCHCH3 2-Butenal 1.470 0.010
C5H10 2-Pentene, (Z)- 1.338 0.010
C6H8 Bicyclo[3.1.0]hex-2-ene 1.521 0.010
CH3CH2Cl Ethyl chloride 1.510 0.010
C6H6 Trimethylenecycopropane 1.437 0.010
C4H4N2 Pyrazine 1.397 0.010
C5H8O Methyl cyclopropyl ketone 1.510 0.010
C5H10O 2-Butanone, 3-methyl- 1.534 0.010
CH3CONH2 Acetamide 1.519 0.010
C2H2+ acetylene cation 1.253 0.011
C5H8O 2H-Pyran, 3,4-dihydro- 1.338 0.011
C5H8 Ethenylcyclopropane 1.334 0.011
C6H10 1-Butyne, 3,3-dimethyl- 1.209 0.011
C6H8 Bicyclo[3.1.0]hex-2-ene 1.338 0.011
C5H10 2-Pentene, (E)- 1.334 0.011
C3H2N2 Malononitrile 1.459 0.011
CH3CCH propyne 1.207 0.011
CH2ClCHClCH3 Propane, 1,2-dichloro- 1.519 0.011
CHClCCl2 Trichloroethylene 1.337 0.011
CH3CH(CH3)CH3 Isobutane 1.525 0.012
C3H2O3 vinylene carbonate 1.331 0.012
CH3CHSHCH3 2-Propanethiol 1.520 0.012
C3H6 Cyclopropane 1.501 0.012
C5H10S 2H-Thiopyran, tetrahydro- 1.528 0.012
C4H5NO Isoxazole, 5-methyl- 1.362 0.012
CH2CHCH2F Allyl Fluoride 1.488 0.012
CH2CHCH2CH3 1-Butene 1.493 0.012
C4H9N Pyrrolidine 1.534 0.013
C5H5N Pyridine 1.390 0.013
C6H14 Hexane 1.533 0.013
C2H3NO Nitrosoethylene 1.335 0.013
C7H12 Norbornane 1.536 0.013
C5H6 1,3-Cyclopentadiene 1.460 0.013
C2H2 Acetylene 1.203 0.013
C6H4Cl2 1,3-dichlorobenzene 1.388 0.013
C5H10 2-Pentene, (Z)- 1.490 0.013
C10H8 naphthalene 1.370 0.013
C2H5F fluoroethane 1.505 0.013
CH2CHCHCH2 1,3-Butadiene 1.337 0.013
CH3CHF2 Ethane, 1,1-difluoro- 1.498 0.014
C5H8O 2H-Pyran, 3,4-dihydro- 1.516 0.014
C6H4Cl2 1,4-dichlorobenzene 1.388 0.014
C6H5CCH phenylacetylene 1.208 0.014
C6H5CH3 toluene 1.394 0.014
HCCCl Chloroacetylene 1.203 0.014
C5H6 1-Buten-3-yne, 2-methyl- 1.501 0.014
C5H8 1,3-Butadiene, 2-methyl- 1.340 0.014
CH2CHCH3 Propene 1.488 0.014
CHOCH(CH3)CH3 Propanal, 2-methyl- 1.528 0.014
HCCBr bromoacetylene 1.204 0.014
HCCF Fluoroacetylene 1.198 0.015
C3H3NO Oxazole 1.353 0.015
C3H4N2 1H-Pyrazole 1.374 0.015
C7H8 Norbornadiene 1.530 0.015
C2H4O Ethylene oxide 1.459 0.015
C2H5CN ethyl cyanide 1.526 0.015
CH2CCl2 Ethene, 1,1-dichloro- 1.324 0.015
C5H6 1-Buten-3-yne, 2-methyl- 1.207 0.016
C6H6 Trimethylenecycopropane 1.330 0.016
C3F6 hexafluoropropene 1.329 0.016
CH3CF3 Ethane, 1,1,1-trifluoro- 1.494 0.016
CH2C(CH3)CH3 1-Propene, 2-methyl- 1.330 0.016
C4H10O Propane, 2-methoxy- 1.519 0.016
C10H8 naphthalene 1.410 0.016
C6H5Cl chlorobenzene 1.386 0.016
C10H8 naphthalene 1.420 0.016
C5H6 Cyclopropylacetylene 1.422 0.016
CH2CCHCH3 1,2-Butadiene 1.301 0.016
C5H8 Cyclopentene 1.540 0.016
C6H8 (Z)-hexa-1,3,5-triene 1.337 0.017
C4H6 Methylenecyclopropane 1.457 0.017
C6H8 Bicyclo[2.1.1]hex-2-ene 1.332 0.017
C4H4N2 Pyridazine 1.375 0.017
CH2C(CH3)OCH3 1-Propene, 2-methoxy- 1.330 0.017
C4H5N Pyrrole 1.417 0.017
C4H5N (E)-2-Butenenitrile 1.336 0.018
C5H6 1,3-Cyclopentadiene 1.340 0.018
CH2CHOH ethenol 1.326 0.018
C3H4N2 1H-Imidazole 1.364 0.018
C4H6O Cyclobutanone 1.527 0.018
C5H6 1-Buten-3-yne, 2-methyl- 1.336 0.018
SiC2 Silicon dicarbide 1.265 0.019
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile 1.398 0.019
CH2ClCCCl 1,3-dichloropropyne 1.201 0.019
C10H8 Azulene 1.484 0.020
C3H4O Methylketene 1.306 0.020
CHF2CHF2 1,1,2,2-tetrafluoroethane 1.511 0.020
C2H4F2 1,2-difluoroethane 1.493 0.020
C4H2 Diacetylene 1.205 0.020
CH(CN)3 tricyanomethane 1.460 0.021
C10H8 Azulene 1.377 0.021
C4H10O2 Ethane, 1,2-dimethoxy- 1.504 0.021
CH3COCH2CH3 2-Butanone 1.512 0.021
C6H5NH2 aniline 1.392 0.021
C5H6S Thiophene, 3-methyl- 1.423 0.022
C2F2 difluoroacetylene 1.187 0.022
CH3CH(CH3)CN Propanenitrile, 2-methyl- 1.522 0.022
CH3COCH2CH3 2-Butanone 1.507 0.023
C5H5N Bicyclo[1.1.0]butane-1-carbonitrile 1.498 0.024
C4 Carbon tetramer 1.304 0.024
C5H10 2-Pentene, (E)- 1.484 0.025
CHClCHCl Ethene, 1,2-dichloro-, (Z)- 1.317 0.025
ClCOClCO Oxalyl chloride 1.534 0.026
F2CCCF2 tetrafluoroallene 1.282 0.026
CH3CH(NH2)COOH Alanine 1.509 0.026
C6H5CCH phenylacetylene 1.388 0.027
C12H8 biphenylene 1.370 0.028
C6H8 Bicyclo[3.1.0]hex-2-ene 1.482 0.029
C6H10O cyclohexanone 1.503 0.029
C2F4 Tetrafluoroethylene 1.311 0.031
C5H8 Bicyclo[2.1.0]pentane 1.507 0.032
C3 carbon trimer 1.277 0.034
C3O2 Carbon suboxide 1.251 0.034
C5H8O Cyclopentanone 1.504 0.035
C4N2 2-Butynedinitrile 1.190 0.043
C4H6 1-Methylcyclopropene 1.300 0.211
C4H6 1-Methylcyclopropene 1.476 0.800