title: Reversible reduction of oxatriphyrin(3.1.1)--adjusting the coordination abilities to the central ion.
abstract: Furan-fused oxatriphyrin(3.1.1) acts as a ligand towards boron(III), phosphorous(III), and phosphorous(V) ions. The coordination abilities are adjusted by changes of the oxidation state. Two coordination modes are possible, depending on the central-ion entrapped in the oxatriphyrin(3.1.1) environment. A free base, structurally similar to the complexes, can be easily obtained by regioselective reduction. The resulting molecules are highly emissive after conversion into a phlorin-like oxatriphyrin(3.1.1) frame (NON donors), and show chiral activity caused by the presence of a tetrahedral carbon.
authors.affiliation: Department of Chemistry, University of Wrocław, F.Joliot-Curie 14, 50383 Wrocław, Poland, Fax: (+48) 71-3282348. milosz.pawlicki@chem.uni.wroc.pl.
authors.forename: Miłosz
authors.initials: M
authors.lastname: Pawlicki
authors.forename: Aneta
authors.initials: A
authors.lastname: Kędzia
authors.forename: Dominik
authors.initials: D
authors.lastname: Bykowski
authors.forename: Lechosław
authors.initials: L
authors.lastname: Latos-Grażyński
keywords: boron; fluorescence; phosphorous; subporphyrin; triphyrin