摘要
在２５±０．１℃、Ｉ＝０．１ｍｏｌ·Ｌ－１ＫＮＯ３条件下，应用ｐＨ法测定了氨基酸水杨醛席夫碱（Ｓａｌ∶Ａ，Ａ配体）－α－氨基酸（Ａａ，Ｂ配体）三元配合物的稳定常数，实验发现在三元配合物的稳定性与Ｂ配体的碱性之间存在良好的线性自由能关系。同时，以稳定性数据为探针，研究了三元配合物分子内存在的配体间疏水缔合作用。
The formation constants of the ternary complexes of type CuAB have been determined by means of pH method at 25±0.1℃ in the presence of 0.1 mol·dm -3 KNO 3, where A=N salicylidenephenylalanine(Sal∶P), N salicylideneleucine(Sal∶L),N salicylidenealanine(Sal∶An) and N salicylideneglycine(Sal∶G),and B=glycine(Gly),L sercine(Ser),L valine(Val), L leucine(Leu), L isoleucine(Iso) and L proline(Pro). It was found that the linear free energy relationship(LFER) exist nicely between the stability of ternary complexes and the base strength of the B ligands. The lg K Δ were used to character the stability of ternary complexes related to the stability of parent binary complexes. The hydrophobic ligandligand interaction in the molecules of the CuAB were studied.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1997年第1期53-57,共5页
Chinese Journal of Inorganic Chemistry
基金
山东省自然科学基金
关键词
席夫碱
铜配合物
稳定性
氨基酸
氨基酸水杨醛
copper(Ⅱ) LFER Schiff base α amino acid hydrophobic ligand ligand interaction
