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首页> 外文期刊>Journal of Bangladesh Academy of Sciences >FORMATION CONSTANTS OF MIXED LIGAND COMPLEXES OF DIVALENT COPPER, NICKEL, ZINC AND CADMIUM WITH DIPICOLINIC ACID
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FORMATION CONSTANTS OF MIXED LIGAND COMPLEXES OF DIVALENT COPPER, NICKEL, ZINC AND CADMIUM WITH DIPICOLINIC ACID

机译:不同铜,镍,锌和镉的混合配体配位化合物的形成常数

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摘要

The formation constants (log K_(MAL)~M) as well as stability constants (Δlog K) of mixed ligand complexes of the type [MAL] where M = Cu(Ⅱ), Ni(Ⅱ) and Zn(Ⅱ), A = dipicolinic acid (DPA) and L = oxalic acid (ox), ethylenediamine (en), glycine (gly), α-alanine (α-ala), phenylalanine (ph-ala) and tyrosine (tyr), have been determined in aqueous medium at μ= 0.2 moldm~3 (NaClO_4) and 25+- 1℃ by using a computer program. The order of the stability of mixed ligand complexes has been confirmed by the cyclic voltammetry (CV) and UV spectral studies. The relative order of stability of mixed ligand complexes is as follows : [Cd(DPA)(L)] > [Zn(DPA)(L)] > [Ni(DPA)(L)] > [Cu(DPA)(L)]
机译:[MAL]型混合配体配合物的形成常数(log K_(MAL)〜M)和稳定性常数(ΔlogK),其中M = Cu(Ⅱ),Ni(Ⅱ)和Zn(Ⅱ),A =已确定二吡啶甲酸(DPA)和L =草酸(ox),乙二胺(en),甘氨酸(gly),α-丙氨酸(α-ala),苯丙氨酸(ph-ala)和酪氨酸(tyr)通过使用计算机程序,在μ= 0.2 mouldm〜3(NaClO_4)和25±1℃的水介质中。循环伏安法(CV)和紫外光谱研究已证实了混合配体配合物的稳定性顺序。混合配体配合物的相对稳定性顺序如下:[Cd(DPA)(L)]> [Zn(DPA)(L)]> [Ni(DPA)(L)]> [Cu(DPA)(L )]

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