邻苯二甲酸根桥联的三铜(Ⅱ)和三镍(Ⅱ)配合物的合成与表征

SYNTHESIS AND CHARACTERIZATION OF NEW μ-PHTHALATO TRINUCLEAR COPPER(Ⅱ)AND NICKEL(Ⅱ)COMPLEXES

本文合成了4个三核配合物:[Cu_3(phth)_2(phen)_3](ClO_4)_2(1),[Cu_3(phth)_2(NO_2-phen)_3](ClO_4)_2(2),[Ni_3(phth)_2(phen)_3](ClO_4)_3(3)和[Ni_3(phth)_2(NO_2-phen)_3](ClO_4)_2(4)(phth=邻苯二甲酸根,phen=1,10-菲咯啉.NO_2-phen=5-硝基-1,10-菲咯啉).根据元素分析、红外、电子光谱、电导及磁矩的数据,推断这些配合物是以邻苯二甲酸根为桥的三核配合物.已研究在4～300K范围内配合物(2)的磁化率与温度的关系,交换积分J=—3.82cm^(-1).这表示在金属离子之间有一个弱的反铁磁自旋变换作用.

Four trinuclear complexes have been prepared,[Cu_3(phth)_2(phen)_3](ClO_4)_2(1),[Cu_3(phth)_2(NO_2-phen)_3](ClO_4)_2(2),[Ni_3(phth)_2(phen)_3](ClO_4)_2(3)and[Ni_3(phth)_2(NO_2-phen)_3](ClO_4)_2(4)(phth=phthalato,phen=1,10-phenanthroline,NO_2-phen=5-nitro-1.10-phenanthroline).Based on IR,elementalanalyses,electronic spectra,conductivity and magnetic moment,the complexes areproposed to be phthalato-bridged trinuclear complex.The temperature dependenceof the magnetic susceptibilities of(2)has been studied in the 4～300K range,andthe exchange integral J=-3.82cm^(-1).This indicates a weak antiferromagnetic spinexchange interaction among the metal ions.