Synthesis and characterization of Ru(II) and Ir(III) complexes that bear camphoric 1,3-diamine ligands

Two rigid N-monosulfonylated 1,3-diamine ligands have been prepared starting from commercially available d-camphor through three steps. Their reactions with [Ru(η6-arene)(μ-Cl)Cl]2 (arene = p-cymene or C6H5CO2Et) or [Ir(η5-C5Me5)(μ-Cl)Cl]2 afforded five new complexes. The structures of one monosulfonamide 1,3-diamine ligand and three organometallic complexes were confirmed by X-ray crystallography.