Photochemical reactions of the binuclear palladium(0) complex [Pd2(dppm)3] with organic halides yield palladium(I) dihalogeno complexes with irradiation of visible light. Photooxidation of alcohols was observed for ethanol and 2-propanol with the palladium complex, Photophysical and quenching properties of a chiral [Pt(BINAP)2] complex (BINAP = RR-or SS-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl) were studied. The emitting MLCT excited state has a long lifetime. Photochemical reactions of [Pt(BINAP)2] with organic halides cause halogen abstraction. Atom and electron transfer may be candidates for the initial stage of the photoreaction. The mechanism of the photoreaction is discussed with the quenching data.
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