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

Syntheses, Structures and Characterization of Cu(Ⅱ) and Co(Ⅲ) Complexes Formed by a Tripodal Tetradentate Schiff Base

制备了一种水杨醛类多齿Schiff碱(H_3Lds,1),并合成了2种金属配合物[CuCl(H_2Lds)]·H_2O(2)和[Co_2(H_2O)_2(Lds)_2]·5H+2O(3)。X射线单晶衍射分析结果表明,1属正交晶系P2_12_12_1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。

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（H） chloride or cobalt（n） acetate to yield two complexes [CuCl（H2Lds）]·H2O（2）和[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 P21212l, 2 with Cu（ll） in distorted square-planar coordination in orthorhombic space group Pbca, 3 with Co（m） in distorted coordination octahedron in monoclinic space group P2/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.