An iridium–pyridylpyrrolide complex exhibiting reversible binding of H2

Abstract

The synthesis and characterization of a series of iridium(I) and iridium(III) complexes supported by a 3,5-bis(trifluoromethyl)-2-(2′-pyridyl)pyrrole (L⁻) ligand are reported. Compound [Ir(L)(COD)] (COD = 1,5-cyclooctadiene) demonstrates reversible binding of hydrogen to form a dihydride complex [Ir(L)(H)₂(COD)] with no hydrogenation of COD.