Oscillating Chemistry of NaBrO3-CH2(COOH)2-H3PO4-CuL2+System

Abstract

Abstract: We investigated the oscillating chemical reaction of NaBrO₃-CH₂ (COOH)₂-CuL²⁺-H₃PO₄ system, where [CuL²⁺] is [Cu(Me₆[l4]-4,11-dieneN₄](ClO₄)₂ · 3H₂O.The domain of the existance of the oscillation was obtained in the coordinates of NaBrO₃ and CH₂(COOH)₂. The effects of initial concentration of the components on the oscillation were studied.Various re-ductants (HOOCCOOH, Vcetc) can influence the oscillations.So HBrO₂ is an important intermediate.When Ag⁺, Hg²⁺(4× 10^-5 mol/L) were added to the oscillating system, the oscillations were quenched immediately.It seems that Br^- plays the role of a control intermediate as in B-Zsystem catalyzed by Ce⁴⁺ or Mn²⁺, In this system, the oscillations were also inhibited by acrylamide, H₂O₂ etc.This shows that the free radical may be involved in the reaction process.

Key words: Tetraazamacrocyclic copper(Ⅱ) complex, Oscillating chemical reaction, Phosphoric

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XIE Fu-Xin, XU Zhi-Qiang, JIA Xiao-Ying, NI Shi-Sheng . Oscillating Chemistry of NaBrO₃-CH₂(COOH)₂-H₃PO₄-CuL²⁺System[J]. Chem. J. Chinese Universities, 1993, 14(10): 1439.

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Oscillating Chemistry of NaBrO₃-CH₂(COOH)₂-H₃PO₄-CuL²⁺System

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