Iodomalonic Acid as an Anti-Inhibitor in the Resorcinol Inhibited Briggs−Rauscher Reaction

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• 作者：Thuy Lawson ; Jnos Flp ; Maria Wittmann ; Zoltn Noszticzius ; Norbert Muntean ; Gabriella Szab ; Lavinia Onel
• 刊名：Journal of Physical Chemistry A
• 出版年：2009
• 出版时间：December 24, 2009
• 年：2009
• 卷：113
• 期：51
• 页码：14095-14098
• 全文大小：127K
• 年卷期：v.113,no.51(December 24, 2009)
• ISSN：1520-5215

文摘

It was found that the inhibitory effect of resorcinol is less pronounced if it is added in a later stage of the Briggs−Rauscher reaction, which indicates that an accumulating intermediate—most probably iodomalonic acid—can suppress the inhibition. In fact, when iodomalonic acid was added to the reaction mixture, the inhibitory period was shortened considerably even at micromolar levels of the iodomalonic acid concentration. Moreover, iodomalonic acid can accelerate the rate of the reaction when applied in the same low concentrations, suggesting that it can be an autocatalytic intermediate of the Briggs−Rauscher reaction.