Syntheses and properties of transition metal ion complexes of a novel binucleating extended-porphyrin analog

Abstract

The synthesis and characterisation of the uncomplexed ligand of a macrocyclic extended-porphyrin analog and its binuclear complexes with Zn2+, Cu2+ and Co2+ has been undertaken. The dicobalt complex has displayed ability to bind dioxygen and hence activate it towards the oxidation of 2,6-Diisopropylphenol, which is otherwise a spin-forbidden process. This catalytic activity has been found to be superior to that of an analogous complex of smaller cavity size, following rate studies. Multi-metal centred biomolecules as well as porphyrins have been found to play an important role towards the activation of oxygen.