Authors: NAHEED KAUKAB BHATTI, M. SADIQ SUBHANI, ATHER YASEEN KHAN, RUMANA QURESHI, ABDUR RAHMAN
Abstract: Experimental values of rate constants for the heterogeneous transfer of electrons to methyl viologen, diquat viologen, benzyl viologen and n-butyl viologen monocations were determined. The process was studied at the surface of a platinum disk in mixtures of water with different aprotic solvents at different temperatures. Theoretical rate constants were evaluated using Marcus' equation, which also contains barrier crossing probability and nuclear frequency. A comparison was made between the theoretical and experimental values of rate constants.
Keywords: Viologen monocations, experimental rate constant for heterogeneous electron transfer process, theoretical rate constant for heterogeneous electron transfer process
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