三维铜配位聚合物的构筑、晶体结构及磁性质

Synthesis,Crystal Structure and Magnetic Properties of a 3D Cu Coordination Polymer

采用一水合醋酸铜与有机桥连配体N-(2-萘甲酰基)-氨基乙酸硫脲(2NGH_3)在甲醇和N,N'-二甲基甲酰胺(DMF)混合溶液中反应,用溶剂挥发法制备了铜的三维配位聚合物{[Cu_(34)(2NG)_(26)(DMF)_6(H_2O)_(12)]·2H_2O}n(配合物1).利用红外光谱、元素分析和热分析等方法对其进行了表征,并用X射线单晶衍射测定晶体结构.XPS测试结果证实,在配合物1中存在二价和一价铜的混合离子.测试了配合物1在2~300 K内的变温磁化率,结果表明,相邻的二价铜离子间存在着铁磁偶合作用.

A three-dimensional coordination polymer { [Cu34（2NG）26（ DMF）6（H2O）12]·2H2O}n（ complex 1） was prepared through the reaction of N-（ 2-naphthoyl）-amino acetic acid thiourea（2NGH3） with Cu（OAc）2·H2O in the solution of Me OH and DMF. Its molecular structure was preliminary characterized by infrared spectroscopy,elemental analysis and TG analyses,and further confirmed by X-ray single crystal diffraction. XPS analysis confirmed the existence of Cu（ I） and Cu（ Ⅱ） ions in complex 1. Magnetic measurement showed that the ferromagnetic coupling between the Cu（ Ⅱ） ions in complex 1 could be observed.