Photoinduced activation of arene C-H bonds with (η5-cyclopentadienyl)-trimethylplatinum(IV): A possible role of CpPtR2H

Abstract

(η5-Cyclopentadienyl)trimethylplatinum(IV) reacts with ArMe arenes rather than alkanes or benzene under heating to 150 °C in the dark or under irradiation with light at room temperature by a radical mechanism to produce (η5-cyclopentadienyl)dimethyl(arylmethyl)platinum(IV) complexes, and the expected complex CpRR2(H) is unstable under the reaction conditions, as found by the reduction of CpRMe2I with complex metal hydrides.