Heterocorroles: corrole analogues containing heteroatom(s) in the core or at a meso-position

RSC Advances Pub Date: 2018-06-08 DOI: 10.1039/C8RA03669A

Abstract

Corroles are 18 π aromatic macrocyclic systems having one direct pyrrole–pyrrole linkage leading to a contracted cavity compared to porphyrins. Corroles exhibit contrasting coordination chemistry and properties compared to porphyrins. Structural modification of corroles by introducing a heteroatom in their aromatic conjugation circuit i.e., either in the core or at a meso position leads to a new class of corrinoids called heterocorroles. The core modification strategy includes replacing one or two core nitrogen atom(s) with O, S or C atoms and meso-modification involves replacing the meso-carbon atom at the 10-position with NH, NR, O, S, Se or Si atoms. This review article presents an overview of the progress in heterocorrole chemistry including their syntheses, key structural aspects and properties.

Graphical abstract: Heterocorroles: corrole analogues containing heteroatom(s) in the core or at a meso-position
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