Kinetics and mechanism of benzoin oxidation using iron(III) in the presence of ferrozine or 2,2'‐bipyridine in acidic medium |
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| Authors: | Khaldoun A. Al-Sou'od Basem F. Ali Rajab Abu-El-Halawa Abd-Al-Hakeem H. Abu-Nawas |
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| Affiliation: | Chemistry Department, Al al-Bayt University, Mafraq, Jordan |
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| Abstract: | Kinetics and mechanism of oxidation of benzoin (H2B) by ferrozine (Fz) or 2,2'‐bipyridine (bipy) have been carried out in aqueous HNO3 medium. The rate shows first‐order dependence on [H2B] and [Fe3+] and inverse second‐order dependence on [H+]. The rate of reaction increased with increase in the ligand concentration. The increase in dielectric constant will increase the rate, while increase in [HNO3] decreased it. Substituent and temperature effects on the rates have been investigated. The rate laws derived are in excellent agreement with the experimental results. Plausible mechanisms are suggested. © 2005 Wiley Periodicals, Inc. Int J Chem Kinet 37: 444–449, 2005 |
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