heteroarene
heteroarene
A heterocyclic compound formally derived from an arene by replacement of one or more methine (‒C=) and/or vinylene (‒CH=CH‒) groups by trivalent or divalent heteroatoms, respectively, in such a way as to maintain the continuous π-electron system characteristic of aromatic systems and a number of out-of-plane π-electrons corresponding to the Hückel rule (4<em>n</em>+2).