Catalytic Hydrogenolysis of the Pt−OPh Bond of a Molecular Pt(II) Complex using Silica Supported Pd, Rh and Pt Nanoparticles

Abstract

Silica-supported Pd, Rh and Pt metal nanoparticles catalyze the hydrogenolysis of the PtÀ OPh bond of ( t bpy)Pt(OPh)Cl to release PhOH. Based on kinetic studies monitored by 1 H NMR spectroscopy, the reactivity trend is Pd > Rh > Pt. Kinetic studies with Pd/SiO 2 are consistent with a first-order dependence on the catalyst and the molecular Pt(II) complex ( t bpy)Pt(OPh)Cl. Using TEM-EDS mapping and ICP-OES measurements of a recovered Pd catalyst, after 1 hour of hydrogenolysis of ( t bpy)Pt-(OPh)Cl, approximately 10-16 % Pt deposition (relative to Pd mol %) on the Pd/SiO 2 surface was quantified.