| Species |
Name |
Bond Length (Å) |
Atom1 index |
Atom2 index |
| C2 |
Carbon diatomic |
1.245 |
1 |
2 |
| C2+ |
carbon diatomic cation |
1.405 |
1 |
2 |
| C2H- |
Ethynyl anion |
1.248 |
1 |
2 |
| C2H |
Ethynyl radical |
1.208 |
1 |
2 |
| C2H2 |
Acetylene |
1.206 |
1 |
2 |
| C2H2+ |
acetylene cation |
1.251 |
1 |
2 |
| CCH2 |
vinylidene |
1.301 |
1 |
2 |
| C2H3- |
vinyl anion |
1.360 |
1 |
2 |
| C2H3 |
vinyl |
1.310 |
1 |
2 |
| C2H3+ |
vinyl cation |
1.226 |
2 |
3 |
| C2H4- |
Ethylene anion |
1.447 |
1 |
2 |
| C2H4 |
Ethylene |
1.333 |
1 |
2 |
| C2H4+ |
Ethylene cation |
1.400 |
1 |
2 |
| C2H5- |
Ethyl anion |
1.537 |
1 |
2 |
| C2H6 |
Ethane |
1.523 |
1 |
2 |
| C2H6+ |
ethane cation |
1.429 |
1 |
2 |
| C3 |
carbon trimer |
1.296 |
1 |
2 |
| |
|
1.296 |
1 |
3 |
| SiC2 |
Silicon dicarbide |
1.274 |
2 |
3 |
| CCO |
Dicarbon monoxide |
1.363 |
1 |
2 |
| HCCN |
cyanomethylene |
1.320 |
1 |
2 |
| HCCO |
ketenyl radical |
1.297 |
1 |
2 |
| HCCF |
Fluoroacetylene |
1.199 |
1 |
2 |
| HCCCl |
Chloroacetylene |
1.205 |
1 |
2 |
| HCCBr |
bromoacetylene |
1.207 |
1 |
2 |
| C2H2O |
Oxirene |
1.270 |
2 |
3 |
| CH2CO |
Ketene |
1.313 |
1 |
2 |
| CH2CS |
Thioketene |
1.311 |
1 |
2 |
| C3H3 |
cyclopropenyl radical |
1.462 |
1 |
3 |
| |
|
1.462 |
1 |
4 |
| |
|
1.315 |
3 |
4 |
| CH3CN- |
acetonitrile anion |
1.562 |
1 |
2 |
| CH3CN |
Acetonitrile |
1.459 |
1 |
2 |
| CH3CN+ |
Acetonitrile cation |
1.405 |
1 |
2 |
| CHNCH2 |
2H-Azirine |
1.437 |
2 |
3 |
| HCNCH2+ |
2H-Azirine cation |
1.693 |
2 |
3 |
| CHNHCH |
1H-Azirine |
1.279 |
2 |
3 |
| HCCNH2 |
Ethynamine |
1.207 |
1 |
2 |
| CH2COH+ |
ketene, protonated |
1.279 |
1 |
2 |
| CH2CHF |
Ethene, fluoro- |
1.324 |
1 |
2 |
| CH3CCH |
propyne |
1.460 |
1 |
2 |
| |
|
1.207 |
2 |
3 |
| CH2CCH2 |
allene |
1.308 |
1 |
2 |
| |
|
1.308 |
1 |
3 |
| C3H4 |
cyclopropene |
1.507 |
1 |
2 |
| |
|
1.507 |
1 |
3 |
| |
|
1.296 |
2 |
3 |
| CH3CHN |
methylmethaniminyl radical |
1.507 |
1 |
2 |
| CH3CHO |
Acetaldehyde |
1.499 |
1 |
2 |
| C2H4O |
Ethylene oxide |
1.463 |
2 |
3 |
| C2H4O+ |
ethylene oxide cation |
1.460 |
2 |
3 |
| C2H4S |
Thiirane |
1.481 |
2 |
3 |
| CH2CH2Cl |
2-chloroethyl radical |
1.465 |
1 |
2 |
| C3H5 |
Allyl radical |
1.382 |
1 |
3 |
| |
|
1.382 |
1 |
4 |
| C3H5+ |
Allyl cation |
1.379 |
1 |
3 |
| |
|
1.379 |
1 |
4 |
| CH3CHCH |
1-propenyl radical |
1.311 |
1 |
2 |
| |
|
1.501 |
1 |
3 |
| CH3CHNH |
ethanimine |
1.497 |
1 |
2 |
| CH3CH2O |
Ethoxy radical |
1.516 |
1 |
2 |
| CH3CHOH |
1-hydroxy-ethyl radical |
1.481 |
1 |
2 |
| CH3CHOH+ |
acetaldehyde, protonated |
1.449 |
1 |
2 |
| CH2CH2OH |
2-hydroxy ethyl radical |
1.484 |
2 |
3 |
| C2H5Br |
Ethyl bromide |
1.511 |
1 |
2 |
| C3H6 |
Cyclopropane |
1.504 |
1 |
2 |
| |
|
1.504 |
1 |
3 |
| |
|
1.504 |
2 |
3 |
| CH2CHCH3 |
Propene |
1.496 |
1 |
2 |
| |
|
1.333 |
2 |
3 |
| CH3CHCH3 |
Isopropyl radical |
1.487 |
1 |
2 |
| |
|
1.487 |
1 |
3 |
| CH3CHCH3+ |
Isopropyl cation |
1.434 |
1 |
3 |
| |
|
1.434 |
1 |
4 |
| C3H8 |
Propane |
1.522 |
1 |
2 |
| |
|
1.522 |
1 |
3 |
| CH3CH2NH3+ |
ethylamine, protonated |
1.510 |
2 |
3 |
| C4 |
Carbon tetramer |
1.289 |
1 |
2 |
| |
|
1.310 |
1 |
3 |
| |
|
1.310 |
2 |
4 |
| C2N2 |
Cyanogen |
1.381 |
1 |
2 |
| C3O |
Tricarbon monoxide |
1.274 |
1 |
2 |
| C4H2 |
Diacetylene |
1.370 |
1 |
2 |
| |
|
1.210 |
1 |
3 |
| |
|
1.210 |
2 |
4 |
| HNCCNH |
Ethenediimine |
1.296 |
1 |
2 |
| C2H2O2 |
Ethanedial |
1.512 |
1 |
2 |
| C3H2O |
Propadienal |
1.329 |
1 |
2 |
| |
|
1.303 |
2 |
3 |
| CHFCHClz |
(Z)-1-Chloro-2-fluoroethene |
1.327 |
1 |
2 |
| CHFCHCl |
(E)-1-chloro-2-fluoroethene |
1.326 |
1 |
2 |
| C2H2ClF |
1-chloro-1-fluoroethylene |
1.323 |
1 |
2 |
| HOCH2CN |
cyanomethanol |
1.474 |
1 |
2 |
| CH2ClCHO |
chloroacetaldehyde |
1.507 |
1 |
2 |
| C4H4 |
cyclobutadiene |
1.566 |
1 |
2 |
| |
|
1.343 |
1 |
3 |
| |
|
1.566 |
3 |
4 |
| |
|
1.343 |
2 |
4 |
| NH2CH2CN |
Aminoacetonitrile |
1.476 |
2 |
3 |
| NH2CCNH2 |
Diaminoacetylene |
1.207 |
1 |
2 |
| CH2CHCHO |
Acrolein |
1.471 |
1 |
2 |
| |
|
1.336 |
2 |
3 |
| CH3CHF2 |
Ethane, 1,1-difluoro- |
1.497 |
1 |
2 |
| C2H4F2 |
1,2-difluoroethane |
1.498 |
1 |
2 |
| CH2ClCH2Cl |
Ethane, 1,2-dichloro- |
1.507 |
1 |
2 |
| CH2FCH2Cl |
Ethane, 1-chloro-2-fluoro- |
1.508 |
1 |
2 |
| CH2BrCH2Br |
Ethane, 1,2-dibromo- |
1.506 |
1 |
2 |
| CH2BrCH2Cl |
1-bromo-2-chloroethane |
1.506 |
1 |
2 |
| C2H5CN |
ethyl cyanide |
1.527 |
1 |
2 |
| |
|
1.463 |
2 |
3 |
| CH3CHNOH |
Acetaldoxime |
1.491 |
1 |
2 |
| CH3COCH2 |
Acetonyl radical |
1.442 |
1 |
3 |
| |
|
1.509 |
1 |
4 |
| CH2FCH2OH |
2-fluoroethanol |
1.503 |
1 |
2 |
| CH2CHCH2F |
Allyl Fluoride |
1.491 |
1 |
2 |
| |
|
1.331 |
2 |
3 |
| CH2ClCH2OH |
2-Chloroethanol |
1.510 |
1 |
2 |
| CH2CHCHCH2 |
1,3-Butadiene |
1.467 |
1 |
2 |
| |
|
1.338 |
1 |
3 |
| |
|
1.338 |
2 |
4 |
| CHCCH2CH3 |
1-Butyne |
1.208 |
1 |
2 |
| |
|
1.462 |
2 |
3 |
| |
|
1.528 |
3 |
4 |
| H2NCHCHNH2 |
diaminoethylene |
1.335 |
1 |
2 |
| CH3CH2CHO |
Propanal |
1.517 |
1 |
2 |
| |
|
1.502 |
2 |
3 |
| C3H6O |
Oxetane |
1.536 |
2 |
3 |
| |
|
1.536 |
2 |
4 |
| C3H6O |
Acetone enol |
1.489 |
1 |
2 |
| |
|
1.335 |
2 |
3 |
| CH3CSCH3 |
Thioacetone |
1.499 |
1 |
3 |
| |
|
1.499 |
1 |
4 |
| CH2ClCH2OH2+ |
2-chloroethanol, protonated |
1.504 |
1 |
2 |
| CH3CHCHCH2 |
methylallyl radical |
1.382 |
1 |
2 |
| |
|
1.381 |
2 |
3 |
| |
|
1.490 |
3 |
4 |
| CH3CHFCH3 |
2-Fluoropropane |
1.509 |
1 |
4 |
| |
|
1.509 |
1 |
5 |
| CH2FCH2CH3 |
1-Fluoropropane |
1.508 |
1 |
2 |
| |
|
1.521 |
2 |
3 |
| CH2CHCH2CH3 |
1-Butene |
1.527 |
1 |
2 |
| |
|
1.496 |
2 |
3 |
| |
|
1.333 |
3 |
4 |
| C4H8 |
methylcyclopropane |
1.504 |
1 |
2 |
| |
|
1.079 |
1 |
3 |
| |
|
1.502 |
1 |
4 |
| C4H8 |
cyclobutane |
1.546 |
1 |
3 |
| |
|
1.546 |
2 |
3 |
| |
|
1.546 |
2 |
4 |
| |
|
1.546 |
1 |
4 |
| CH3OC2H5 |
Ethane, methoxy- |
1.509 |
3 |
4 |
| CH3CH2CH2CH3 |
Butane |
1.522 |
1 |
2 |
| |
|
1.522 |
1 |
3 |
| |
|
1.522 |
2 |
4 |
| C3H7NH3+ |
n-propylamine, protonated |
1.524 |
1 |
2 |
| |
|
1.513 |
2 |
3 |
| C3O2 |
Carbon suboxide |
1.273 |
1 |
2 |
| |
|
1.273 |
1 |
3 |
| C3H2O2 |
Propiolic acid |
1.447 |
1 |
2 |
| |
|
1.206 |
2 |
3 |
| CHCl2CHO |
dichloroacetaldehyde |
1.515 |
1 |
2 |
| CH2ClCCCl |
1,3-dichloropropyne |
1.206 |
1 |
2 |
| |
|
1.449 |
2 |
3 |
| CHCl2CCH |
3,3-dichloropropyne |
1.205 |
1 |
2 |
| |
|
1.448 |
2 |
3 |
| C2H2N2O |
Furazan |
1.417 |
4 |
5 |
| C3H3N2- |
imidizolyl anion |
1.385 |
4 |
5 |
| C3H3N2 |
imidazolyl radical |
1.466 |
4 |
5 |
| C3H3NO |
Isoxazole |
1.421 |
1 |
2 |
| |
|
1.355 |
1 |
3 |
| C3H3NO |
Oxazole |
1.351 |
4 |
5 |
| C3H3NS |
Thiazole |
1.363 |
3 |
5 |
| CHF2CH2F |
Ethane, 1,1,2-trifluoro |
1.505 |
1 |
2 |
| C5H4 |
pentatetraene |
1.276 |
1 |
2 |
| |
|
1.276 |
1 |
3 |
| |
|
1.316 |
2 |
4 |
| |
|
1.316 |
3 |
5 |
| C3H4N2 |
1H-Imidazole |
1.368 |
3 |
5 |
| C3H4N2 |
4H-Imidazole |
1.494 |
4 |
5 |
| C3H4N2 |
2H-Imidazole |
1.451 |
4 |
5 |
| C4H4N- |
pyrrolide anion |
1.398 |
2 |
4 |
| |
|
1.398 |
3 |
5 |
| |
|
1.417 |
4 |
5 |
| C4H4N |
pyrrolide radical |
1.456 |
2 |
4 |
| |
|
1.359 |
4 |
5 |
| |
|
1.456 |
3 |
5 |
| C3H4O2 |
Methyl glyoxal |
1.522 |
1 |
2 |
| |
|
1.496 |
2 |
3 |
| CH3COCCH |
3-butyn-2-one |
1.502 |
1 |
2 |
| |
|
1.460 |
2 |
4 |
| |
|
1.209 |
4 |
5 |
| C2H4O3 |
1,2,3-trioxolane |
1.545 |
4 |
5 |
| HOCHCCHOH |
allenediol |
1.311 |
1 |
2 |
| |
|
1.311 |
1 |
3 |
| C4H4Se |
selenophene |
1.362 |
2 |
4 |
| |
|
1.428 |
4 |
5 |
| |
|
1.362 |
3 |
5 |
| C5H5 |
cyclopentadienyl radical |
1.395 |
1 |
2 |
| |
|
1.466 |
2 |
3 |
| |
|
1.357 |
3 |
4 |
| |
|
1.395 |
1 |
5 |
| |
|
1.466 |
4 |
5 |
| CH3OCH2CN |
Methoxyacetonitrile |
1.465 |
3 |
4 |
| CH2CClCHCH2 |
1,3-Butadiene, 2-chloro- |
1.336 |
1 |
2 |
| |
|
1.456 |
2 |
3 |
| |
|
1.336 |
3 |
4 |
| C5H6 |
Propellane |
1.514 |
1 |
2 |
| |
|
1.514 |
2 |
3 |
| |
|
2.237 |
3 |
4 |
| |
|
1.514 |
3 |
5 |
| |
|
1.514 |
4 |
5 |
| |
|
1.580 |
2 |
5 |
| |
|
1.514 |
1 |
5 |
| C4H6N+ |
pyrrole, protonated |
1.336 |
2 |
4 |
| |
|
1.336 |
3 |
5 |
| |
|
1.465 |
4 |
5 |
| HCOOC2H5 |
Ethyl formate |
1.507 |
1 |
2 |
| CH2FCH2CH2F |
1,3-difluoropropane |
1.509 |
1 |
2 |
| |
|
1.509 |
1 |
3 |
| CH3CH2CH2CN |
Butanenitrile |
1.462 |
2 |
3 |
| |
|
1.529 |
3 |
4 |
| |
|
1.521 |
4 |
5 |
| C5H8 |
Bicyclo[1.1.1]pentane |
1.551 |
1 |
2 |
| |
|
1.551 |
1 |
3 |
| |
|
1.551 |
1 |
4 |
| |
|
1.551 |
2 |
5 |
| |
|
1.551 |
3 |
5 |
| |
|
1.551 |
4 |
5 |
| C4H10O |
Methyl propyl ether |
1.511 |
3 |
4 |
| |
|
1.522 |
4 |
5 |
| C4F2 |
difluorobutadiyne |
1.371 |
1 |
2 |
| |
|
1.202 |
1 |
3 |
| |
|
1.202 |
2 |
4 |
| CF2CCl2 |
difluorodichloroethylene |
1.329 |
1 |
2 |
| C2ClF3 |
Ethene, chlorotrifluoro- |
1.326 |
1 |
2 |
| CFClCFCl |
cis-1,2-dichloro-1,2-difluoroethylene |
1.332 |
1 |
2 |
| CFClCClF |
trans-1,2-dichloro-1,2-difluoroethylene |
1.331 |
1 |
2 |
| C2Br4 |
tetrabromoethene |
1.341 |
1 |
2 |
| CF3CHO |
trifluoroacetaldehyde |
1.529 |
1 |
2 |
| C6H2 |
hexatriyne |
1.217 |
1 |
2 |
| |
|
1.365 |
1 |
3 |
| |
|
1.365 |
2 |
4 |
| |
|
1.212 |
3 |
5 |
| |
|
1.212 |
4 |
6 |
| C4H2N2 |
Fumaronitrile |
1.341 |
1 |
2 |
| |
|
1.426 |
1 |
3 |
| |
|
1.426 |
2 |
4 |
| C2H2O4 |
Oxalic Acid |
1.529 |
1 |
2 |
| C3H2O3 |
vinylene carbonate |
1.329 |
5 |
6 |
| CHF2CHF2 |
1,1,2,2-tetrafluoroethane |
1.514 |
1 |
2 |
| CHCl2CHF2 |
1,1-dichloro-2,2-difluoroethane |
1.519 |
1 |
2 |
| CH2ClCCl3 |
1,1,1,2-tetrachloroethane |
1.520 |
1 |
2 |
| CHFClCHFCl |
1,2-dichloro-1,2-difluoroethane RR |
1.518 |
1 |
2 |
| CHFClCHClF |
ethane, 1,2-dichloro-1,2-difluoro- |
1.517 |
1 |
2 |
| C2H4N2S2 |
Ethanedithioamide |
1.524 |
1 |
2 |
| C6H5- |
phenyl anion |
1.420 |
1 |
2 |
| |
|
1.420 |
1 |
3 |
| |
|
1.399 |
2 |
4 |
| |
|
1.399 |
3 |
5 |
| |
|
1.394 |
4 |
6 |
| |
|
1.394 |
5 |
6 |
| C6H6 |
Benzene |
1.392 |
1 |
2 |
| |
|
1.392 |
2 |
3 |
| |
|
1.392 |
3 |
4 |
| |
|
1.392 |
4 |
5 |
| |
|
1.392 |
1 |
6 |
| |
|
1.392 |
5 |
6 |
| C6H6 |
Prismane |
1.520 |
1 |
2 |
| |
|
1.520 |
1 |
3 |
| |
|
1.520 |
2 |
3 |
| |
|
1.553 |
1 |
4 |
| |
|
1.553 |
3 |
5 |
| |
|
1.520 |
4 |
5 |
| |
|
1.520 |
4 |
6 |
| |
|
1.553 |
2 |
6 |
| |
|
1.520 |
5 |
6 |
| C6H6 |
Hexa-1,5-diene-3-yne |
1.214 |
1 |
2 |
| |
|
1.422 |
1 |
3 |
| |
|
1.422 |
2 |
4 |
| |
|
1.340 |
3 |
5 |
| |
|
1.340 |
4 |
6 |
| C6H6 |
Trimethylenecycopropane |
1.442 |
1 |
2 |
| |
|
1.442 |
1 |
3 |
| |
|
1.442 |
2 |
3 |
| |
|
1.333 |
1 |
4 |
| |
|
1.333 |
2 |
5 |
| |
|
1.333 |
3 |
6 |
| C6H6 |
1,2,4,5-Hexatetraene |
1.462 |
1 |
2 |
| |
|
1.314 |
1 |
3 |
| |
|
1.314 |
2 |
4 |
| |
|
1.308 |
3 |
5 |
| |
|
1.308 |
4 |
6 |
| C5H6N+ |
Pyridinium |
1.379 |
2 |
4 |
| |
|
1.379 |
3 |
5 |
| |
|
1.393 |
5 |
6 |
| |
|
1.393 |
4 |
6 |
| C6H8 |
(E)-hexa-2,3,4-triene |
1.268 |
1 |
2 |
| |
|
1.321 |
1 |
3 |
| |
|
1.321 |
2 |
4 |
| |
|
1.499 |
3 |
5 |
| |
|
1.499 |
4 |
6 |
| C6H10 |
3-Hexyne |
1.209 |
1 |
2 |
| |
|
1.462 |
1 |
3 |
| |
|
1.462 |
2 |
4 |
| |
|
1.528 |
3 |
5 |
| |
|
1.528 |
4 |
6 |
| C5H10O |
3-Pentanone |
1.512 |
2 |
3 |
| |
|
1.512 |
2 |
4 |
| |
|
1.517 |
3 |
5 |
| |
|
1.517 |
4 |
6 |
| CF3COF |
trifluoroacetyl fluoride |
1.530 |
1 |
2 |
| CF3COO- |
trifluoro acetate anion |
1.560 |
1 |
2 |
| CH(CN)3 |
tricyanomethane |
1.470 |
1 |
3 |
| |
|
1.470 |
1 |
4 |
| |
|
1.470 |
1 |
5 |
| HN=C=C(CN)2 |
Dicyanoketenimine |
1.333 |
1 |
2 |
| |
|
1.425 |
1 |
4 |
| |
|
1.425 |
1 |
5 |
| C7H7+ |
cycloheptatrienyl cation |
1.393 |
1 |
2 |
| |
|
1.393 |
2 |
3 |
| |
|
1.393 |
3 |
4 |
| |
|
1.393 |
4 |
5 |
| |
|
1.393 |
5 |
6 |
| |
|
1.393 |
6 |
7 |
| |
|
1.393 |
1 |
7 |
| C4F4 |
tetrafluorcyclobutadiene |
1.537 |
1 |
2 |
| |
|
1.339 |
2 |
3 |
| |
|
1.339 |
1 |
4 |
| |
|
1.537 |
3 |
4 |
| C2Cl6 |
hexachloroethane |
1.566 |
1 |
2 |
| C(CN)4 |
tetracyanomethane |
1.477 |
1 |
2 |
| |
|
1.477 |
1 |
3 |
| |
|
1.477 |
1 |
4 |
| |
|
1.477 |
1 |
5 |