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一种新的Salen型双肟配体H2L(H2L=4,4′-二溴-6,6′-二氯-2,2′-[乙二氧双(氮次甲基)]二酚)分别与一水合乙酸铜或四水合乙酸钴反应,合成了2种配合物即[Cu(L)](1)和[Co(L)(H2O)2]n(2)。X-射线单晶衍射分析结果表明,配合物1是单核结构,由1个Cu2+离子和1个四齿配位的L2-单元组成。中心CuⅡ原子的配位数为4,配合物的几何构型为扭曲的四面体。配合物2含有1个Co2+离子、1个配体L2-单元(提供N2O2给予体)、2个配位的水分子,其中心CoⅡ原子具有六配位的稍微扭曲的八面体几何构型。该配合物通过分子间氢键和π-π堆积作用形成了线性延伸的金属-水链状超分子结构。
A new Salen-type bi-oxime ligand, H2L (H2L = 4,4’-dibromo-6,6’-dichloro-2,2’- [ethylenedioxymethylene] Two kinds of complexes [Cu (L)] (1) and [Co (L) (H2O) 2] n (2) were synthesized respectively with copper acetate monohydrate or cobalt acetate tetrahydrate. X-ray single crystal diffraction analysis results show that the complex 1 is a mononuclear structure consisting of one Cu2 + ion and one tetradentate L2-unit. The coordination number of the Cu Ⅱ atom in the center is 4, and the geometry of the complex is a distorted tetrahedron. Complex 2 contains one Co2 + ion, one ligand L2-unit (providing N2O2 donor), and two coordination water molecules. The central CoII atom has a hexacoordinated slightly distorted octahedral geometry. The complex forms a linearly extended metal-water chain supramolecular structure by intermolecular hydrogen bonding and π-π stacking.