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The photochemical products,quantum yields and mechanisms of aqueous Carboplatin havebeen studied at 313 and 254 nm irradiation.Excitation in the ligand field bands ~1A_1→~1A_2 and ~1A_1→~1E leads tosubstitution reactions,giving diaquodiammineplatinum and tetraaquoplatinum.And then these complexesundergo thermally hydrolysis and polymerization producing polymeric hydroxo-bridged complexes.Oxygen isnot involved in the reactions.Excitation in the charge-transfer band ~1A_1→~1A_(2u) results in redox reaction.Metallic platinum and diaquodiammineplatinum are formed,respectively,in the absence and the presence ofoxygen.
The photochemical products, quantum yields and mechanisms of aqueous Carboplatin have been studied at 313 and 254 nm irradiation. Excipitation in the ligand field bands ~ 1A_1 → ~ 1A_2 and ~ 1A_1 → ~ 1E leads tosubstitution reactions, giving diaquodiammineplatinum and tetraaquoplatinum. And then these complexesundergo thermally hydrolysis and polymerization producing polymeric hydroxo-bridged complexes. Oxygen is not involved in the reactions .Excitation in the charge-transfer band ~ 1A_1 → ~ 1A_ (2u) results in redox reaction. Metallic platinum and diaquodiammineplatinum are formed, respectively, in the absence of and the presence ofoxygen.