高等学校化学学报

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (1): 1.

• 论文 •    下一篇

钴(Ⅱ)与亚氨基二乙酸和α-氨基酸三元配合物的研究

樊春梅, 张佳   

  1. 南开大学化学系
  • 收稿日期:1985-09-11 出版日期:1987-01-24 发布日期:1987-01-24

Studies on Ternary Complexes of Cobalt (Ⅱ) Containing Iminodiacetic Acid and Some α-Amino Acids

Fan Chunmei, Zhang Jia   

  1. Department of Chemistry, Nankai University, Tianjin
  • Received:1985-09-11 Online:1987-01-24 Published:1987-01-24

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摘要： 用pH法测定钴(Ⅱ)与亚氨基二乙酸(IDA)(作为第一配体)和甘氨酸(Gly)、丙氨酸(Ala)、正缬氨酸(Nor-Val)、苯基丙氨酸(Phe)、蛋氨酸(Met)、丝氨酸(Ser)、天冬酰胺(Asn)(作为第二配体)的三元配合物的稳定常数,也测定了相同条件下诸配体的质子化常数及Co(Ⅱ)-IDA和Co(Ⅱ)-Met二元配合物的稳定常数。讨论了三元配合物的稳定性和潜在三齿配体的配位情况。

Abstract: The stability constants of ternary complexes of Co(Ⅱ) with iminodiacctic acid (IDA) as the primary ligand and glycine (Gly),Alaninc (Ala), Nor-Valine (Nor-Val),phenyl-alanine (Phc),methionine (Met),Serine (Ser),asparagine (Asn) as the secondary ligand have been determined.Auxiliary data,such as the acid dissociation constants and the binary stability constants of Co(Ⅱ)-IDA and Co(Ⅱ)-Met,have also been obtained under identical conditions. The stability of the ternary complexes and the coordination manner of some potential tridcntate ligands have been discussed in terms of their stability-constant data.

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