Mechanism of chain photochemical reaction of ( n -Bu 4 N) 2 [PtCl 6 ] in chloroform

Anticancer platinum agents and light

“…The lack of marked spectroscopic features requires that ultrafast techniques (e.g. time-resolved absorption and infrared spectroscopy) are employed for understanding their excited state evolution, as recently reported for a number of Pt IV salts [8,9] and complexes [10], including azido compounds [11,12]. Nonetheless, several pioneering studies are available in the literature of the 60-90s on the photochemistry of Pt complexes with potential in chemotherapy.…”

Photoinduced Deposition of Platinum from (Bu4N)2[Pt(NO3)6] for a Low Pt-Loading Pt/TiO2 Hydrogen Photogeneration Catalyst

“…Taking into account reported data on the photochemistry of platinum(IV) complexes 45 and heavy metal nitratocomplexes, 46,47 the plausible mechanism responsible for the photoactivation of [Pt(NO 3 ) 6 ] 2− can include Pt-ONO 2 bond breakage with formation of the reactive 5-coordinated Pt intermediate [Pt III (NO 3 ) 5 ] 2− and NO 3…”

“…Taking into account reported data on the photochemistry of platinum­(IV) complexes and heavy metal nitratocomplexes, , the plausible mechanism responsible for the photoactivation of [Pt­(NO 3 ) 6 ] 2– can include Pt-ONO 2 bond breakage with formation of the reactive 5-coordinated Pt intermediate [Pt III (NO 3 ) 5 ] 2– and NO 3 • radical. Nevertheless, a detailed investigation of [Pt­(NO 3 ) 6 ] 2– photochemistry is required to support this hypothesis, and such work is currently under progress in our group.…”