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合成了新型双功能化的8-羟基喹啉取代二氧四胺大环.这类新配体含有两个配位活性中心,在适当条件下,能分别与金属离子配位.根据pH电位滴定和紫外光谱实验的结果,在L(配体):M(金属离子)=1:1的情况下,8-羟基喹啉完全配位而二氧四胺大环只能部分配位,研究了在不同温度和不同酸度下8-羟基喹啉取代二氧四胺大环铜(Ⅱ)配合物酸催化的分解动力学行为.根据实验数据,提出了合理的反应机理.实验发现此类酸分解反应与以往二氧四胺大环酸分解机理有显著的不同,但大环的配位仍对该配合物的酸分解行为有很大的影响.
A novel bifunctional 8-hydroxyquinoline substituted diaminetetraamine macrocycle was synthesized, which contains two coordination centers and can coordinate with metal ions under appropriate conditions.According to the pH potentiometric titration And ultraviolet spectroscopy experiments, 8-hydroxyquinoline is fully coordinated and the dioxane tetramine ring can only partially coordinate when L (ligand): M (metal ion) = 1: 1. Under different temperatures and different acidities, the kinetic behavior of 8-hydroxyquinoline substituted dioxane tetraamine macrocyclic copper (Ⅱ) complex was investigated. A reasonable reaction mechanism was proposed based on the experimental data. It was found that such acid decomposition The reaction is obviously different from the mechanism of macrocyclic decomposition of dioxane, but the coordination of the macrocycles still has a great influence on the acid decomposition behavior of the complex.