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Issue 18, 2008
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Boron complexes of porphyrins and related polypyrrole ligands: unexpected chemistry for both boron and the porphyrin

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Abstract

The coordination of boron to a range of polypyrrole-containing ligands is explored in this feature article. The boron dipyrromethenes are well-known as laser dyes and fluorescent labels in biology. Subphthalocyanine and subporphyrin macrocycles containing only three pyrrole rings can exist only when templated by a central boron atom. Boron complexes of expanded porphyrins (six or eight pyrroles) can complex boron in dipyrromethene (but not bipyrrole) sites. The primary focus of the article is on boron porphyrin and corrole complexes, where the tight fit of two boron atoms within the very constrained coordination site gives rise to unexpected chemistry at both boron and the porphyrin ligand. These unusual features are described and reasons for their occurrence postulated.

Graphical abstract: Boron complexes of porphyrins and related polypyrrole ligands: unexpected chemistry for both boron and the porphyrin

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Article information


Submitted
27 Sep 2007
Accepted
21 Dec 2007
First published
05 Feb 2008

Chem. Commun., 2008, 2090-2102
Article type
Feature Article

Boron complexes of porphyrins and related polypyrrole ligands: unexpected chemistry for both boron and the porphyrin

P. J. Brothers, Chem. Commun., 2008, 2090
DOI: 10.1039/B714894A

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