一种三足四齿Schiff碱的Cu(Ⅱ)、Co(Ⅲ)配合物的合成、晶体结构与表征

摘要

A multidentate Schiff base ligand (H3Lds,1) with [NO3] donor set,derived from the condensation of salicylaldehyde and 2-Amino-2-methyl-1,3-propanediol,reacted with copper(lⅡ) chloride or cobalt(Ⅱ) acetate to yield two complexes [CuCl(H2Lds)] ·H2O(2) and [Co2(H2O)2(Lds)2] ·5H2O(3).The ligand and complexes were characterized by elemental analysis,IR,UV spectra and X-ray diffraction analysis.The results reveal that 1 crystallizes in orthorhombic space group P212121,2 with Cu(Ⅱ) in distorted square-planar coordination in orthorhombic space group Pbca,3 with Co(Ⅲ) in distorted coordination octahedron in monoclinic space group P21/c,respectively.The H3Lds is linked by intermolecular H-bonds to form two-dimension supramolecular network,while both complexes are connected by intermolecular hydrogen-bonding interactions to form a supramolecular chains,respectively.%制备了一种水杨醛类多齿Schiff碱(H3Lds,1),并合成了2种金属配合物[CuCl(H2Lds)]·H2O(2)和[Co2(H2O)2(Lds)2]·5H2O(3).X射线单晶衍射分析结果表明,1属正交晶系P212121空间群,分子间氢键将该化合物H3Lds连接成二维超分子网络.2属正交晶系Pbca空间群,它是一种具有平面四边形构型的单核铜配合物.而3属单斜晶系P21/c空间群,它是一种双核钴配合物,其中Co(Ⅲ)处于畸变的八面体配位环境.2和3借助分子间氢键均形成了一维超分子链.