1,3-二吡啶基苯和4,4′-二羧基二苯砜构筑的钴(Ⅱ)配合物合成、结构和性质(英文)

Synthesis,Structure and Property of Cobolt(Ⅱ) Complex Constructed by1,3-Dipyridyl Benzene and 4,4′-Bulfonyldibenzoic Acid

以两种V型的配体4,4′-二吡啶基苯(1,3-dpb)和4,4′-二羧基二苯砜(H2sdb),和钴(Ⅱ)通过溶剂热反应合成了1个配位聚合物{[Co(dpb)(sdb)(H2O)2]·2H2O·DMF}n(1)。对其进行了红外、热重、粉晶衍射、单晶衍射等表征,配合物属于三斜晶系,空间群P1。其中Co(Ⅱ)的2个顶点被水分子占据,相邻的钴(Ⅱ)离子连接着1,3-二吡啶基苯和4,4′-二羧基二苯砜形成一维的双绳链,相邻的链之间通过羧基-配位水和配位水-配位水间的氢键相互连接形成二维的层状结构,层状结构之间通过砜基-配位水间的氢键又相互连接形成三维结构。此外,还研究了配合物的固体紫外-可见光谱。

A coordination polymer {[Co （dpb）（sdb）（H2O）2]·2H2O·DMF}n （1） was prepared under hydrothermal conditions based on two types of V-shaped ligand 1,3-dipyridyl benzene （1,3-dpb） with 4,4＇-sulfonyldibenzoic acid （H2sdb）.The complex was characterized by IR spectroscopy,TGA,X-ray powder and single-crystal diffraction.It crystallizes in the triclinic system,space group P1.The neighboring Co（Ⅱ） ions are linked by dpb and sdb2＋ anions to form infinitely 1D double-strand chain.The apical positions of Co（Ⅱ） ions are defined by two coordinated water.The adjacent chains were connected by strong hydrogen bonds （coordinated water-carboxyl groups and coordinated water-coordinated water） to form 2D layer.The adjacent layers were also connected by strong hydrogen bonds （coordinated water-sulfonyl groups） to generate 3D network.In addition,the solid-state UV-Vis of complex 1 was also studied.CCDC：959114.