5-磺酸间苯二甲酸铜配位聚合物的合成、结构及性能研究

Synthesis,structure and property of a 2D 5-sulfoisophthalate-based copper coordination polymer

5-磺酸间苯二甲酸单纳(NaH_2SIP)和Cu(Ac)_2按照不同比例,通过水热反应合成一个2D铜配位聚合物[Cu_3(SIP)(OH)_2(Ac)(H_2O)_2].其结构中包含了一个椅式构型的[Cu_4(OH)_4]^(4+)单元及一个四边形的[Cu_2(Ac)_2]^(2+)单元.两类结构单元相互连接形成一条沿c轴[Cu_6(Ac)_2(OH)_4(H_2O)_4]无机链,通过SIP^(3-)桥联相邻无机链,形成2D层状结构.并通过氢键和π…π堆积作用形成3D超分子框架.该2D层可简化为(6,4)位结点连接的4,6L26{32.42.52}{34.44.54.63}拓扑网络.该配合物的热分解温度为277℃,在462nm处有一荧光发射峰,归属为配体内的π…π*跃迁,PXRD表明样品与化合物1单晶物相相同.

A 2D copper-sulfoisophthalate compound,[Cu_3（SIP）（OH）_2（Ac）（H_2O）_2]（1）,was synthesized from the hydrothermal reactions of 5-sulfoisophthalic acid monosodium salt（NaH_2SIP）with Cu（Ac）_2at different ratios.Compound 1distinguishes itself as a 2Dlayered network,in which a[Cu_4（OH）_4]^（4＋） subunit of chair configuration and a quadrangular Cu_2（Ac）_2subunit were formed.The interconnection of[Cu_4（OH）_4]^（4＋） and[Cu_2（Ac）_2]subunits shapes into a inorganic[Cu_6（Ac）_2（OH）_4（H_2O）_4]chain along the c-direction.With the linkage of SIP^（3-） spacer,a 2Dlayered compound is constructed,and further fabricated into 3D supermolecular architecture based on the connections of hydrogen bindings andπ…πstacking interactions.Compound 1is simplified as a（6,4）-connected 4,6L26 {32.42.52}{34.44.54.63}topological network.The thermal stability of 1is up to ca.277 ℃,and the fluorescence of 1shows an emission at 462 nm assigned toπ…π＊intraligand transfer.PXRD of compound 1 confirms the phase purity of the bulk sample.