四氮杂大环-N-二乙酸与Zn(Ⅱ)、Cd(Ⅱ)、Hg(Ⅱ)配合物的合成及表征

Synthesis and Characterization of Coordination Compounds of Three Kinds of Tetraazamacrocycle-N-diacetic Acids with Zn(Ⅱ),Cd(Ⅱ),Hg(Ⅱ)

本文报道在水溶液中合成的三种四氮杂大环-N-二乙酸(H_2L^1,H_2L^2和 H_2L^3)与Zn(Ⅱ),Cd(Ⅱ),Hg(Ⅱ)的固体配合物,用元素分析、电导测定及红外光谱对其组成进行了确定。H_2L^1、H_2L^2与三种金属离子分别形成组成为 ZnL·2HCl·nH_2O,Cd(H_2L)·2HCl·Cl_2·nH_2O 和 Hg_2(H_2L)·Cl_4·nH_2O 的配合物。H_2L^3与三种金属离子形成组成为 M_2L·Cl_2·nH_2O 的配合物。根据这些结果提出了这些配合物的可能结构。

The coordination compounds of three kinds of tetraazamacrocycle-N- diacetic acids(H_2L^1,H_2L^2,H_2L^3)with Zn(Ⅱ),Cd(Ⅱ) and Hg(Ⅱ)have been synthesized in water sojutions and characterized by elemental analyses,conductivity measurements and IR spectra.The complexes formed by H_2L^1 and H_2L^2 have the stoichiometries of ZnL.2HCl.nH·O,Cd (H_2L).2HCl·Cl_2·nH_2O and Hg_2(H_2L)·Cl_4·nH_2O respectively.The complexes formed by H_2L^3 have the stoichiometries of M_2L·Cl_2·nH_2O. According to the results,tentative structures for these species are proposed.