Synthesis of dendritic iron(II) porphyrins with a tethered axial imidazoleligand designed as new model compounds for globins

Abstract

A series of novel dendritic iron(II) porphyrins with an axial imidazole ligand attached to the central porphyrin core was synthesised and fully characterised. The vacancy of the second axial coordination site was demonstrated by their ability to coordinate the diatomic gas molecules CO, O₂ and NO. The formation of NO complexes by dendritic iron(II) porphyrins was observed for the first time.