Radicals in the Bray鈥揕iebhafsky Oscillatory Reaction

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• 作者：Dragomir R. Stanisavljev ; Maja C. Milenkovi膰 ; Ana D. Popovi膰-Bijeli膰 ; Milo拧 D. Mojovi膰
• 刊名：The Journal of Physical Chemistry A
• 出版年：2013
• 出版时间：April 25, 2013
• 年：2013
• 卷：117
• 期：16
• 页码：3292-3295
• 全文大小：225K
• 年卷期：v.117,no.16(April 25, 2013)
• ISSN：1520-5215

文摘

This study investigates the formation of free radicals in the Bray鈥揕iebhafsky (BL) oscillatory reaction. The results indicate that radicals are produced during both monotonous and oscillatory dynamics observed as the change of the electron paramagnetic signal (EPR) of the spin-probe TEMPONE. EPR spin-trapping with DEPMPO suggested that the most abundant radical produced in the BL reaction is an iodine-centered radical. The EPR spectrum of the DEPMPO/iodine-centered radical adducts has not been previously reported. This study may aid in establishing a more realistic reaction mechanism of the BL reaction and related chemical oscillators.