NiL(ClO4)2催化NaBrO3-MA-H3PO4体系振荡反应的研究

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报道了一种反式Curtis环的镍 (Ⅱ)的配合物NiL(ClO4 ) 2 (L为 2 ,4 ,4 ,9,11,11-六甲基 -1,5,8,12 -四氮杂环十四 - 1,5,8,12 -四烯 )催化NaBrO3 -CH2 (COOH) 2 (MA) -H3 PO4 体系的化学振荡反应。测得该体系的振荡范围 ,研究、分析了各物种浓度、自由基抑制剂和还原剂、Ag+ 、Hg2 + 以及温度对振荡反应的影响。结果表明Br- 起重要动力学控制作用 ,在反应过程中有自由基、Br2 产生并参与了反应。同时发现搅拌速度对反应有很大影响。该反应的振荡轨迹与经典BZ反应及其它四氮杂大环配合物催化的体系有所不同 A nickel (Ⅱ) complex NiL (ClO4) 2 (L is 2, 4, 4, 9, 11, 11-hexamethyl-1,5,8,12- tetrazolium Heterocyclic Tetradec - 1,5,8,12 - tetraene) for the Chemical Oscillating Reaction of NaBrO3 - CH2 (COOH) 2 (MA) - H3PO4 System. The oscillation range of this system was measured. The effects of various species concentrations, free radical inhibitors and reducing agents, Ag +, Hg2 + and temperature on the oscillation reaction were studied. The results show that Br- plays an important kinetic controlling role, with free radicals during the reaction, and Br2 is produced and involved in the reaction. Also found that the stirring speed has a great impact on the reaction. The oscillatory trajectory of this reaction is different from that of the classical BZ reaction and other tetraaza macrocyclic complexes
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