四氮杂大环镍(Ⅱ)配合物催化的化学振荡反应

Oscillating Reactions Catalyzed by Tetraazamacrocyclic Nickel(Ⅱ) Complex

:报道了一种反式Curtis环镍 (Ⅱ )的配合物NiL(ClO4) 2 (L为 5,5,7,1 2 ,1 2 ,1 4-六甲基 - 1 ,4,8,1 1 -四氮杂十四环 - 7,1 4-二烯 )催化NaBrO3—CH2 (COOH) 2 (MA)—H3PO4体系的化学振荡反应。测得该体系的振荡范围 ,研究了各物种浓度、自由基抑制剂和还原剂、Ag+,Hg2 +以及温度对振荡反应的影响。记录了反应的振荡轨迹。

New oscillating reactions catalyzed by a tetraazacrocyclic nickel(Ⅱ) complex NiL(ClO 4) 2, where L is 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazabutadecacyclo-7,14-diene,in acidic bromate mdium have been studied. We obtained the concentration ranges of main reactant within which the oscillations were observed in the system. We discussed the influence of temperature, Vc ,Br -, Ag + , Hg 2+ , acetonitrile or acrylamide on the oscillations. The results indicated that Br - played an important role in the control reaction progress and free radical、Br 2 might be involved in the reaction process. We recorded the oscillation trajectories of this system. It was different from classical BZ reaction and some other tetraazamacrocyclic complexes catalyzed system.