One-electron oxidations of ferrocenes: A pulse radiolysis study |
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| Affiliation: | 1. Department of Chemistry, Electrochemistry and Catalysis Research Laboratory (ECRL), School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh;2. Division of Chemistry, Department of Science and Humanities, Military Institute of Science and Technology, Mirpur Cantonment-1216, Dhaka, Bangladesh;3. Department of Chemistry, Faculty of Science, Mawlana Bhashani Science and Technology University, Santosh, Tangail 1902, Bangladesh;4. Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;5. Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia |
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| Abstract: | Using the pulse radiolysis technique we have studied the oxidation by various inorganic radicals of four water soluble ferrocene derivatives, hydroxyethyl, dimethylaminomethyl, monocarboxylic acid and dicarboxylic acid. We report the second order rate constants for these reactions, the stabilities and spectral properties of the ferrocinium products, and the electrochemically determined ferrocinium/ferrocene redox potentials. We also present preliminary estimates of tyrosine and tryptophan radical redox potentials obtained with the dicarboxylic acid ferrocene derivative as reference, and we discuss the relationship between redox potential differences and the reactivities of the ferrocenes with the inorganic radicals. |
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