首页> 外文期刊>Inorganica Chimica Acta >Heterobinuclear copper(II)-nickel(II) complexes of macrocyclic oxamide with diamines and tetraazacyclam as blocking ligands: synthesis, crystal structure and magnetic properties
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Heterobinuclear copper(II)-nickel(II) complexes of macrocyclic oxamide with diamines and tetraazacyclam as blocking ligands: synthesis, crystal structure and magnetic properties

机译:大环乙酰胺与二胺和四氮杂环烷作为封闭配体的杂双核铜(II)-镍(II)配合物:合成,晶体结构和磁性

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摘要

Three novel oxamido-bridged heterobinuclear copper(II)-nickel(II) complexes derived from macrocylic oxamido compound with diamines and tetraazacyclam. as blocking ligands were synthesized and characterized by IR, ESR and electronic spectra, Their formula is [Cu(L)Ni(en)(2)](ClO4)(2)(.)0.5C(2)H(5)OH (.) H2O (1), [Cu(L)Ni(tmd)(2)](ClO4)(2)(.)4H(2)O (12) and [Cu(L)Ni(rac-eth)](ClO4)(2)(CH3OH)-C-. (3). where L = 1,4,8,11 -tetraazacyclotradecanne-2,3-dione, en = 1,2-diaminoethande, tmd = 1,3-diaminopropane and rac-cth is rac-5,7,7,12,14.14-hexamethyl-1,4,8,11-tetraazacyclotetradecane. The crystal structures of the three complexes have been determined. The structures consist of binuclear units in which the copper(H) ion is in a square-planar environment and linked to the nickel(II) ion via the exo-cis oxygen atoms of the oxamido macrocyclic ligand, with (CuNi)-Ni-... separations of 5.311 (1), 5.420 (2) and 5.307 Angstrom (3), respectively. The temperature dependence of the magnetic susceptibility for 1, 2 and 3 was analyzed by means of the Hamiltonian H = -2JS(Ni)S(Cu), leading to J= -52.8, -45.7 and -56.9 cm(-1) for 1, 2 and 3, respectively. (C) 2002 Published by Elsevier Science B.V. [References: 42]
机译:三种新型的由肟基桥联的杂双核铜(II)-镍(II)配合物,由大环磷酰胺基化合物与二胺和四氮杂环酰胺形成。合成了封闭配体,并通过红外光谱,ESR和电子光谱对其进行了表征,其分子式为[Cu(L)Ni(en)(2)](ClO4)(2)(。)0.5C(2)H(5)OH (。)H2O(1),[Cu(L)Ni(tmd)(2)](ClO4)(2)(。)4H(2)O(12)和[Cu(L)Ni(rac-eth) ](ClO4)(2)(CH3OH)-C-。 (3)。其中L = 1,4,8,11-四氮杂环戊烷-2,3-二酮,en = 1,2-二氨基ethande,tmd = 1,3-二氨基丙烷,rac-cth为rac-5,7,7,12,14.14 -六甲基-1,4,8,11-四氮杂环十四烷。已经确定了三种配合物的晶体结构。该结构由双核单元组成,其中铜(H)离子处于正方形平面环境中,并通过草酰胺基大环配体的正-向氧原子与镍(II)离子连接,其中(CuNi)-Ni- ...分别为5.311(1),5.420(2)和5.307埃(3)的间距。用哈密顿量H = -2JS(Ni)S(Cu)分析1、2和3的磁化率与温度的关系,得出J = -52.8,-45.7和-56.9 cm(-1) 1、2和3。 (C)2002由Elsevier Science B.V.出版[参考:42]

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