Proton storage in the periphery of zirconium(iv) porphyrinogen

Abstract

The reaction of zirconium(IV) porphyrinogen with water yields a dinuclear complex in which one μ-oxo ligand bridges two Zr^IV centres, and two protons are bound to the alpha carbons of two porphyrinogen pyrroles. The reaction establishes the utility of the porphyrinogen macrocycle as a storage site for protons as well as electrons.