化学
亚氨基二乙酸
氨基三乙酸
电位滴定法
齿合度
配体(生物化学)
配合物的稳定常数
三元运算
无机化学
药物化学
螯合作用
立体化学
结晶学
晶体结构
物理化学
水溶液
受体
生物化学
程序设计语言
计算机科学
电极
作者
Ghanshyam Sharma,J. P. Tandon
出处
期刊:Talanta
[Elsevier]
日期:1971-11-01
卷期号:18 (11): 1163-1167
被引量:10
标识
DOI:10.1016/0039-9140(71)80229-1
摘要
The formation constants, log K(mab), for the reactions MA + B right harpoon over left harpoon MAB [where M = Cu(II), Ni, Zn or Cd, A = terdentate ligand and B = bidentate or terdentate ligand] have been determined. Potentiometric evidence is presented for the stepwise addition of the secondary ligand B to the 1:1 metal iminodiacetate (MA). The formation constants and the free energies of formation (DeltaG) have been calculated at 25 +/- 1 degrees and mu = 0.10. The order in terms of secondary ligands has been found to be ASPA > Gly > Aln and Gly > Aln > ASPA with iminodiacetic and nitrilotriacetic acid as primary ligands respectively (ASPA = aspartic acid, Gly = glycine, Aln = dl-alanine). The plot of log K(mab) against log k(mb)(2) shows a linear relationship between the formation constants of the ternary and 1:2 M(II)secondary ligand complexes.
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