C-H and C-Cl activation by mononuclear and dinuclear platinum complexes with 7-azaindolyl-containing chelates

Since Shilov and coworkers([1]) demonstrated the catalytic oxidation of CH4 into CH3OH and CH3Cl, using a Pt(II) salt as a catalyst and stoichiometric amount of Pt(IV) species as an oxidant in an aqueous system, the direct and selective functionalization of hydrocarbons by late transition metal complexes has attracted much research effort clue to their potential applications Oil the utilization of hydrocarbon resources from natural gas or petroleum. Much recent work oil C-H activations involving Pt metal atoms has been concentrated oil cationic mononuclear Pt(II) diimine compounds. This review describes the results from our group on C-H activations using Pt(II) complexes that contain a 7-azaindolyl chelate ligand capable of blocking one binding site of the Pt(II) center. We will focus oil a dinuclear Pt(H) compound and its unique reactivity toward C-H bonds. For comparison purposes, related mononuclear Pt(II) compounds and their reactivity toward C-H bonds will also be described. TO aid the understanding of the reactivity of the dinuclear Pt(II) compound with C-H bonds, we will also present the results of our investigation oil the reaction or the same Pt-2 compound with C-Cl bonds. The potential use or the new Pt(II) compounds, especially the Pt-2 compound in selective C-H activation processes, will be discussed.