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.
Viologen monocations, experimental rate constant for heterogeneous electron transfer process, theoretical rate constant for heterogeneous electron transfer process
BHATTI, NAHEED KAUKAB; SUBHANI, M. SADIQ; KHAN, ATHER YASEEN; QURESHI, RUMANA; and RAHMAN, ABDUR (2006) "Heterogeneous Electron Transfer Rate Constants of Viologen Monocations at a Platinum Disk Electrode," Turkish Journal of Chemistry: Vol. 30: No. 2, Article 5. Available at: https://journals.tubitak.gov.tr/chem/vol30/iss2/5