机构地区: 湖北大学化学化工学院
出 处: 《湖北大学学报(自然科学版)》 2007年第3期265-268,共4页
摘 要: 以KCl、KBr、KI、KNO3为支持电解质,在pH为1.5-3.0范围内,研究了Zn(Ⅱ)与水溶性的中位-四(4-N-氰乙基吡啶基)卟啉(TγNPNPyP)的反应动力学,利用计算机线性回归拟合,给出了其表观速率常数的一般表达式.研究表明,Zn(Ⅱ)与TγNPNPyP嵌入反应速率顺序为KCl介质〉KBr介质〉KI介质〉KNO3介质,这与Zn(Ⅱ)和Cl^-、Br^-、I^-、NO3^-形成配合物的稳定性是一致的,表明平衡阴离子也参与了配位. The kinetics of the insetting reaction of Zn (Ⅱ) and γ-tetra- (4-cyanoethylpyridyl)- porphyrin were studied in KCl, KBr, KI, KNO3 solutions at pH 1.5-3.0 (35℃). The rate constants equation was given by linear regression analysis. Coincide with stability of their complexes , the rate of insetting reaction decreased in the following order: KCl 〉KBr 〉KI 〉KNO3. The results indicate that the anion ions are involved in the coordination.