四氮杂大环四烯镍(Ⅱ)配合物[Ni(TIM)]X催化BrO_3^-氧化双有机底物的振荡反应  

New Oscillating Reactions Catalyzed by Tetramethyl tetraaza-cyclotetradeca-tetraene(TIM) Nickel(II) Complex Ion [Ni(TIM)]^(2+) in the Bromate-Malonic Acid-Oxalic Acid-Sulfuric Acid System

作　　者：许志强[1] 倪诗圣[1] 徐济德[1] 田玉鹏[1] 

机构地区：[1]安徽大学化学系,合肥230039

出　　处：《化学学报》1992年第11期1085-1090,共6页Acta Chimica Sinica

基　　金：国家自然科学基金资助的课题

摘　　要：本文报道了四氮杂大环四烯镍(Ⅱ)配合物[Ni(TIM)]X[TIM为2,3,9,10-四甲基-1,4,8,11-四氮杂环十四-1,3,8,10-四烯;X=(ClO_4)_2,ZnCl_4,(SCN)_2]催化BrO_3^-CH_2(CO_2H)_2-(CO_2H)_2-H_2SO_4体系的新型振荡化学反应.对该振荡反应体系进行了多方面的研究,并提出了简要的机理.It is reported in this paper that a nickel complex, [Ni(TIM)]X, with a macrocyclic ligand containing two conjugated N=C—C=N structural units can serve as the oscillating catalysts in the titled system, where TIM is 2, 3,9, 10-tetramethyl-1, 4, 8, 11-tetraazacyclotetradeca-l, 3, 8, 10-tetraene, X is ZnCl_4 or (C1O_4)_2 or (SCN)_2. A Characteristic green color of Ni (III) species appeared periodically in the solution and the periodical changes in the optical density were recorded. The concentration ranges of the main component in which the oscillations make observable were determined. Unlike the classical B-Z oscillating system, the initial concentrations of the components influence the parameters and the shapes of the oscillating waves. In the absence of organic substrate the catalyst itself can not serve as organic substrate to produce oscillations. Acrylamide, acetonitrile or H_2O_2 can inhibit the oscillating reaction.

关 键 词：四氮杂大环 振荡化学反应 镍络合物 

分 类 号：O614.813[理学—无机化学]