采用水热合成法制备了一个一维配位聚合物{[Co(dpa)(H2O)4]·(dpdo)· (H2O)}n(1)(H2dpa=2,2′-联苯二酸,dpdo=N,N′-二氧化-4,4′-联吡啶),通过红外光谱、紫外光谱、元素分析、XRPD、TGA和X-射线单晶衍射进行了表征.Co(Ⅱ)原子采取了畸变的八面体构型,6个配位氧原子分别来自于2个dpa2-配体和4个配位水分子.每一个dpa2-配体桥联2个Co(Ⅱ)中心,每一个Co(Ⅱ)原子与2个dpa2-配体配位进而形成了21螺旋链结构.借助溶剂水分子的连接作用,螺旋链之间通过多种O-H…O氢键作用形成了2D网格,通过dpdo和2D网格之间多种类型的氢键作用形成了三维超分子结构.测定了室温下聚合物1的固体荧光光谱.%A new Co(Ⅱ) coordination polymer {[Co(dpa)(H2O)4]· (dpdo)·(H2O)}n (1) (H2dpa=2,2′-biphenyldicarboxylate,dpdo=4,4′-bipyridine-N,N′-dioxide) has been synthesized and characterized by IR spectroscopy,UV-Vis spectroscopy,elemental analysis,XRPD,TGA and X-ray single-crystal structure analysis.The Co(Ⅱ) atom has a distorted octahedral coordination environment with a set of oxygen donors from two dpa2-ligands and four coordinated water molecules.Each dpa2-ligand is bounded to two cobalt centers and each cobalt atom is coordinated by two dpa2-ligands thereby generating a 21 helical chain.The helical chains further interact with each other and form a 2D network through multiform O-H…O hydrogen bonds with the help of the solvent water.In the solid state the adjacent layers are separated by dpdo units to form a 3D framework.Upon the excitation at 275 nm,the polymer 1 shows one emission peak at 430 nm in the solid state.CCDC:922034.
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