The two-electron oxidation of U4+ by [PtCl6]2- in aqueous solution is postulated to proceed via an inner-sphere mechanism (R. M. Hassan, J. Phys. Chem. A. , 2011 , 115 , 13338).
a. What are the orders with respect to [U4+] and [PtCl6 2-] ? What data were used to determine these orders?
b. The initial combination of [PtCl6]2- and U4+ is postulated to release two protons prior to the electron transfer step. How is this ionization proposed to increase the electron transfer rate? What is the most likely structure of the bridging species that facilitates the electron transfer from U4+ to Pt4+?
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