【摘要】 通过双苯丙咪唑作为含氮配体,辅以对苯二甲酸配体水热合成出了一种新型的双Z链钴配合物:[Co2(BDC)2(H2C3PIm)2(H2O)2]n(1)(H2BDC=对二苯甲酸;H2C3PIm=2,2丙基双苯丙咪唑),通过元素分析、热重以及X射线单晶洐射对其进行了表征。该晶体属正交晶系,Pca21空间群。每个Co髤原子都具有四面体配位结构,通过BDC和H2C3Pim配体连接形成Z型链结构,但由于配体BDC扭转角的不同,导致了配合物形成了由C-H…π作用与分子间氢键N-H…O,O-H…O连接的一种新颖的组成相同,结构不同的双Z型链状结构(A,B),A型Z链之间与B型Z链之间通过不同的分子间氢键相连组成三维超分子结构。室温下配合物具有较强的荧光发射光谱。更多还原

【Abstract】 By using the bis(2-benzimidazolyl)alkanes as the N-donor ligand and 1,4-benzenedicarboxylic acid as the second metal linker,a novel cobalt(Ⅱ) compound with a 1D double-zigzag chain structure,namely,[Co(BDC)(H2C3PIm)(H2O)]n(1)(H2C3PIm=2,2-(1,3-propanediyl)-bis(1H-benzimidazole),BDC=1,4-benzenedicarboxylic acid) has been synthesized under hydrothermal conditions and characterized by elemental analysis,thermal analysis,X-ray single-crystal diffraction.The crystal belongs to the orthorhombic system,space group Pca21 with a=1.488 6(5) nm,b=1.791 7(5) nm,c=1.894 3(5) nm,V=5.052(3) nm3,Dc=1.360 g·cm-3,Z=8,F(000)=2 136,Goof=0.986,R1=0.042 5,wR2=0.068 7.In compound 1,the distorted tetrahedral Co ion is bridged by the carboxylic oxygen atoms of the BDC ligand and chelated by the nitrogen atoms of the H2C3PIm ligand.Owning to the different of the distorted angles from the BDC ligand,the compound units are linked into 1D double-zigzag chain structure(mode A;mode B) via the C-H…π interactions and N-H…O,O-H…O hydrogen bonding between uncoordinated carboxylate and the nitrogen atoms of H2C2EIm as well as the free water molecules and further extended into a 3D supramolecular structure through the intermolecular hydrogen bonds between the adjacent A and the adjacent B zigzag chains.The luminescent property of compound 1 has also been studied.CCDC: 839239.更多还原