Single bond Common

methine fenestrane bisindole cyclodiphosphazene shared dicoronene disilane biphenyl methylene sigmatropic kekulé formula spiran atropisomer covalent bond benzene ring bipyrrole photocyclization phosphazene polyacetylene oligophenyl triple bond dinaphthalene desaturase bifuran bipyrazole electron pair bibenzimidazole transoid cyclotriphosphazene heterovalent conformational analysis diphenanthrene biphenanthrene bicyclobutane conformational isomerism biphenylene antiaromatic one between photocycloaddition bipentacene conjugated mesomeric effect two carbocyanine binaphthyl dehydrodimerization double bond dyotropic dipyrimidine electrocyclic saturated bipyrazine pseudoaromatic cheletropic atom atropisomerism hyperconjugation cisoid multiple bond rotamer cyclooctatetraene bond order carotene

ond bond gond fond pond yond cond ycond trond khond frond ayond stond hoond brond blond grond almond esmond namond