配位聚合物{[Zn(L)(CH3COO)]∙(H2O)}n的合成及结构表征

Synthesis and Characterization of Coordination Polymer{[Zn(L)(CH3COO)]∙(H2O)}n

本文在水热条件下合成了一个基于双功能配体4-(2-苯并咪唑基)苯甲酸(L)和Zn(Ⅱ)的配位聚合物{[Zn(L)(CH3COO)]·(H2O)}n(1),并通过红外及X-射线单晶衍射表征了该化合物的结构。该化合物的晶体属单斜晶系,P2(1)/c空间群,晶胞参数如下:a=17.3443(9)Å,b=10.2451(5)Å,c=8.3316(5)Å,β=100.320(5)°,V=1456.53(13)Å3,Z=4,Dc=1.731 mg/m3,R1=0.0714。配位聚合物1表现为2D结构,中心离子锌为四配位的扭曲四面体构型。

In this paper, a Zn(Ⅱ) coordination polymer, namely {[Zn(L)(CH3COO)]·(H2O)}n(1) based on a bifunctional ligand 4-(2-benzimidazole)benzoic acid(L) was synthesized under hydrothermal condition, and the structure of 1 was characterized by X-ray single crystal diffraction. The compound crystallizes in monoclinic system, space group P2(1)/c with a = 17.3443(9)Å, b = 10.2451(5)Å, c = 8.3316(5)Å, β=100.320(5)°, V=1456.53(13) Å3, Z=4, Dc=1.731 mg/m3, R1=0.0714. The coordination polymer 1 shows a 2 D structure and the coordination geometry of center Zn(Ⅱ) is a slightly distorted tetrahedron.