Synthesis, spectroscopy and electrochemistry of mixed-ligand complexes of platinum(II) and palladium(II)

Abstract

Mixed-ligand complexes [MX2(MBPY)] (M = Pd-I(I) or Pt-I(I); X = Cl-, I-, N-3(-) or NO2-; MBPY = 4,4'-dimethyl-2,2'-bipyridine) have been prepared and characterised by elemental analyses, conductivity measurements, i.r., electronic absorption and H-1-n.m.r. spectroscopic techniques. The cyclic voltammograms of these complexes suggest the involvement of the metal d pi orbital in the one-electron oxidation process and the pi* orbital of the MBPY in the one-electron reduction process. [Pt(MBPY)(N-3)(2)] shows solution-state luminescence at room temperature.