配合物稳定性和配体酸碱强度之间的直线自由能关系──Ⅰ．二价过渡全属离子—α—氨基酸水杨醛席夫碱二元体系  

LINEAR FREE ENERGY RELATIONSHIP BETWEEN STABILITY OF COMPLEX AND BASICITY OF LIGAND──Ⅰ. SOME BIVALENT TRANSITION METAL IONS-SCHIFF BASE DERIVED FROM α-AMINO ACID AND SALICYLALDEHYDE BINARY COMPLEXES SYSTEM

作　　者：李延团[1] 刘树祥[1] 田君濂[1] 田来进[1] 高恩庆[1] 毕思玮[1] 

机构地区：[1]曲阜师范大学化学系

出　　处：《无机化学学报》1995年第4期434-437,共4页Chinese Journal of Inorganic Chemistry

基　　金：山东省自然科学基金

摘　　要：在２５±０．１℃，Ｉ＝０．１ｍｏｌ·ｄｍ－３ＫＮＯ３条件下，应用ｐＨ法测定了水杨醛缩α－氨基酸的酸离解常数及它们与Ｍｎ（Ⅱ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）生成的二元配合物的稳定常数．结果表明，对于同一种配体，配合物的稳定性均符合金属离子的欧文—威廉序；对于同一种金属离子，在配合物稳定性与配体的碱性之间均存在良好的直线自由能关系．The dissociation constants of Schiff base derived from α-amino acid and salicylaldehyde constants of their Mn(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅲ), Zn(Ⅱ) binary complexes were determined by pH method at 25±0.1℃ in the presence of 0.1mol·dm-3KNO3 The results show that the stability of binary complexes accord with the Irving-Williams order of metal ions for the same ligand and linear free energy relationship (LFER) between stability of complex and basicity of ligand exist nicely for each metal ion.

关 键 词：稳定常数 席夫碱 配合物 

分 类 号：O641.4[理学—物理化学]