配位化学中的直线自由能关系──XX．铜（Ⅱ）－1，4，7，10－四氮杂环十三烧－11，13－二酮－α－氨基酸（5－取代邻菲罗啉）三元配合物的稳定性研究

STUDIES ON THE STABILITY OF COPPER(Ⅱ)-1,4,7,10TETRAAZACYCLOTRIDECANE-11,13-DIONE-α-AMINOACIDAND 5-SUBSTITUTED PHENANTHROLINE TERNARY COMPLEXES

本文采用ｐＨ法，在２５．０±０．１℃，Ｉ＝０．１ｍｏｌ·ｄｍ－３ＫＮＯ３存在条件下，测定了铜（Ⅱ）－１，４，７，１０－四氮杂环十三烷－１１，１３－二酮－α－氨基酸（５－取代邻菲罗啉）三元配合物的稳定常数，探讨了大环多胺配体与金属离子的配位能力、配位方式、及其在水溶液中铜（Ⅱ）配合物的稳定性，同时也研究了５－取代邻菲罗啉与铜（Ⅱ）之间的ｄ－ｐ反馈π键、取代基的Ｈａｍｍｅｔｔ诱导效应对三元配合物稳定性的影响．

The stability constants of ternary system of 1,4,7, 10-tetraazacyclotridecane-11, 13-dioneα-aminoacid and 5-substituted phenanthroline were measured by pH method at 25.0±0.1℃,I= 0.1mol·dm-3KNO3. The coordinating ability of dioxotetraamine with copper(Ⅱ), the structure and the stability of copper(Ⅱ) complexes were discussed. The results show that d-p back bonding formed between phen and copper(Ⅱ). Hammett parameters of substituents influenced the stability of their copper(Ⅱ) complexes.