基于5-(4-(2,6-二(2-吡嗪基)-4-吡啶基)苯氧基)间苯二甲酸的Mn(Ⅱ)和Ca(Ⅱ)配位聚合物的合成与晶体结构

Syntheses and Crystal Structures of Mn(Ⅱ) and Ca(Ⅱ) Coordination Polymers Based on 5-(4-(2,6-Di(pyrazin-2-yl)pyridin-4-yl)phenoxy)isophthalic Acid

采用对苯二甲酸为模板剂,溶剂热法合成了2个以5-(4-(2,6-二(2-吡嗪基)-4-吡啶基)苯氧基)间苯二甲酸(H2L)为配体的金属-有机配位聚合物:{[Mn L]·0.5H_2O}_n(1),{[CaL(H_2O)_2]·H_2O}_n(2)。通过X-射线单晶衍射,元素分析和红外光谱进行了结构表征。结构分析表明,1具有(3,3)-连接的不同手性型二维层面结构,这些交替出现的单手性左旋型和右旋型二维平面通过配体的吡啶环与吡嗪环间π…π堆积作用构成了三维超分子结构;2是通过L^(2-)配体羧基桥连接相邻的Ca(Ⅱ)金属中心,形成一条平行于b轴方向的一维链结构。研究了配位聚合物的热稳定性和2的荧光性质。

Two new metal-organic coordination polymers {[MnL]·0.5H_2O}_n（1）,{[CaL（H_2O）_2]·H_2O}_n（2）（H2L=5-（4-（2,6-di（pyrazin-2-yl）pyridin-4-yl）phenoxy）isophthalic acid） have been synthesized under solvothermal reaction and characterized by single crystal X-ray diffraction analysis. 1 features a novel 3D supramolecular network built by different monochiral sheets with（3,3）-connected 2D net. 2 displays a 1D inorganic-chain linked by carboxylate oxygen atoms of L^（2-） with Ca （Ⅱ） ions. Thermogravimetric analyses（TGA） have been measured for 1 and 2.Luminescent properties of 2 were investigated. CCDC： 1059223, 1; 1059224, 2.