作　　者： ; ;

机构地区： 中山大学化学与化学工程学院化学系

出　　处： 《中山大学学报（自然科学版）》 1996年第4期48-52,共5页

摘　　要： 用ｐＨ电位滴定法测定了水溶液中二元配合物ＭＬ２＋和三元混配配合物Ｍ（ＡＴＰ）Ｌ２－的稳定常数，将结果与氨的相应值比较，发现所研究三元混配配合物中吡啶类配体的芳环与ＡＴＰ的嘌呤环之间存在着分子内堆积作用。 The stability constants of the binary complexes comprising Zn 2+ or Cd 2+ and 2 picoline, 2,4 lutidine or 2,4,6 collidine and ternary mixed ligand complexes containing in additional adenosine 5′ triphosphate(ATP) were determined by potentiometric pH titration in aqueous solution. Comparing these data with those of the corresponding complexes containing ammonia instead of pyridine like ligands, it has been found that an intramolecular stacking interaction exists between the pyridine like ligands and the purine moiety of ATP in the ternary complexes, and the interaction is related to the structure of coordination spheres of the central metal ions.

关 键 词： 堆积作用 三元混配配合物 吡啶 配体 三磷酸腺甙

领　　域： [理学] [理学]