Add time:08/06/2019         Source:sciencedirect.com

The reaction of dichloride anion radical with tetraammineplatinum(II) (cas 16455-68-8) ion has been studied in aqueous, acidic solution using the fast-reaction technique of pulse radiolysis in conjunction with UV-visible absorption detection. The second-order rate constant for the reaction of Cl.2 radical with the platinum(II) complex is calculated to be (9±1) × 109 dm3·mol-1·s-1, and the reaction leads to products which absorb strongly in the region of 250–350 nm. Very similar spectral features arise from the reaction of hydroxyl radical and Pt(NH3)2+4 in the presence of low concentrations of free chloride ion. The transients are proposed to be platinum(III) chloro species, and the interrelationships between the species are discussed.

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