Nature of the ‘[Ir(bpy)2(H2O)(bpy)]3+’, (bipy = 2,2′-bipyridine) cation. Monodentate or covalently hydrated bipyridine ligand? X-Ray crystal structure of the perchlorate salt

Abstract

A single-crystal X-ray structural study of the ClO₄^– salt of the title cation demonstrates this species contains neither a monodentate nor a covalently hydrated bipyridine ligand; all three bipyridine ligands are chelated to iridium(III) but one bipyridine ligand is ligated via the nitrogen of one ring and the C(3) carbon of the other ring, reminiscent of orthometallated compounds.