The Journal of Physical Chemistry

An additional negative feedback loop in the classical Belousov-Zhabotinskii reaction: malonyl radical as a second control intermediate

HD Foersterling, Z Noszticzius

Index: Foersterling, Horst-Dieter; Noszticzius, Zoltan Journal of Physical Chemistry, 1989 , vol. 93, # 7 p. 2740 - 2748

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Citation Number: 56

Abstract

Reactions of malonyl radicals with inorganic bromine species (oxidation numbers-1 to+ 5) of the Belousov-Zhabotinsky (BZ) reaction are investigated in 1 M sulfuric acid medium by electron spin resonance spectroscopy in continuous-flow experiments. A very high reaction rate is found for Br02'(k7-5 X lo9 M-'sl), followed by Br2 and HOBr (k, C 1.5 X lo8 MI sl and k8< 1 X lo7 M-'sl, respectively). At high concentrations acidic bromate and bromide have ...