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对于在某些过渡金属三元配合物中配体间π电子转移的协作效应已有不少研究.它对配合物稳定性的影响十分显著,如当氮杂芳香碱(2,2′-联吡啶、邻二氮菲)和邻苯二酚、草酸等“氧-氧”型配体同时配位在过渡金属离子上可形成十分稳定的三元配合物,表现出强的π电子协作效应.配体取代基团的电子效应也已进行了许多工作,但设计一系列具有不同取代基的配体,从而可以调节其电子给予能力,系统研究“协作效应”的规律尚不多.本文选择了以
There have been many studies on the cooperative effect of π electron transfer between ligands in some ternary transition metal complexes and its influence on the stability of the complexes is very significant, Pyridine, phenanthroline) and catechol, oxalic acid and other “oxygen - oxygen” type ligands simultaneously coordinate transition metal ions can form a very stable ternary complex, showing strong π electron coordination effect. Lots of efforts have been made to study the electronic effect of ligand substitution groups. However, a series of ligands with different substituents have been designed to regulate the electron donating ability. However, there are not many systematic studies on the “cooperative effect” To