Photochemistry, platinum compounds

Some quick studies showed that light was the necessary agent for the change, and we were now deep into the photochemistry of platinum. In retrospect, this was not surprising. Platinum compounds antedate silver in pho-... 

Williams JAG (2007) Photochemistry and Photophysics of Coordination Compounds Platinum. 281-. 205-268... 

The proposed mechanism of the reaction involves electron transfer from an arene to a platinum(IV) compound to give an intermediate ion-radical pair, [ArH]" [Pt Clj 1 or [ArH]" lPt CU(H20r] (Scheme VII.9) (for the photochemistry of PtCU ", see, e.g., [50]). The route to this ion-radical pair may be conceived ether as an electron transfer within the 7t-complex of ArH with PtCU (VII-15) or PtCU(H20) (VII-16), or as an outer-sphere electron transfer to the excited complex of platinum(IV) with participation of a chlorine ligand (the transformation of strnctnre VII-17 into strnctures VII-18 or VII-19). Subsequent extrusion of Cl from structure VII-20 gives rise to the same ion-radical pair [ArH]" fPt Cl/ ]. 

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