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以3,5-二(苯并咪唑基)吡啶(L)、间苯二甲酸(m-H2BDC)、4-羧基肉桂酸(H2CCA)、ZnSO4·7H2O和Cd(NO3)2·4H2O为原料,使用溶剂热方法合成了两个配位聚合物[Zn(L)(m-BDC)](1)和[Cd(L)(CCA)]·2H2O(2),利用红外、元素分析、热重分析和X-射线粉末衍射对其进行了表征,利用X-射线单晶衍射对结构进行了测定,并研究了配合物的荧光性质。在配合物1中,L与金属离子连接形成了一维(1D)链结构,而间苯二甲酸根离子与金属离子构成了一个M2(m-BDC)2(M=金属离子)的单元。一维链之间通过M2(m-BDC)2单元连接形成二维网状(2D)结构。在配合物2中,和配合物1类似,L与金属离子连接形成一维链,但与1不同的是羧酸配体与金属离子配位也构成了一维链结构,两种一维链通过配位作用连接构成二维结构。
In this paper, 3,5-bis (benzimidazolyl) pyridine (L), isophthalic acid (m-H2BDC), 4-carboxycinnamic acid (H2CCA), ZnSO4 · 7H2O and Cd (NO3) Two coordination polymers, Zn (L) (m-BDC)] and Cd (L) (CCA) · 2H2O (2) were synthesized by solvothermal method and characterized by IR, elemental analysis, Their structures were characterized by X-ray powder diffraction, X-ray powder diffraction and X-ray diffraction. The fluorescence properties of the complexes were also studied. In complex 1, L forms a one-dimensional (1D) chain structure with metal ions, while isophthalate and metal ions form a unit of M2 (m-BDC) 2 (M = metal ions). One-dimensional chains are connected by M2 (m-BDC) 2 units to form a two-dimensional network (2D) structure. In complex 2, similar to complex 1, L is connected with metal ions to form a one-dimensional chain, but different from 1 is that the coordination of carboxylic acid ligands with metal ions also constitutes a one-dimensional chain structure. Two kinds of one- The two-dimensional structure is formed by coordination.