前文报道了N,N’-双(对位取代苯基)乙二胺的质子化常数及其与 Cu(Ⅱ),Ni(Ⅱ)生成二元配合物的生成常数之间的直线自由能关系.本文报道以2,2′-联吡啶为第一配体,N,N′-双(对位取代苯基)乙二胺为第二配体的 Cu(Ⅱ)、Ni(Ⅱ)三元配合物稳定性的研究,发现在三元配合物的稳定性与第二配体的碱性强度之间亦存在直线自由能关系. We previously reported the protonation constants of N, N’-bis (para-substituted phenyl) ethylenediamines and their linear free energy relationships with the formation constants of binary complexes of Cu (II) and Ni (II) In this paper, Cu (Ⅱ), Ni (Ⅱ) ternary ligands with 2,2’-dipyridyl as the first ligand and N, N’-bis The stability of the complex was studied and found that there was also a linear free energy relationship between the stability of the ternary complex and the basic strength of the second ligand.