柔性1,5-二(2-乙基咪唑)戊烷配体构筑的两个d10金属配合物的合成、结构及性质

摘要

利用过渡金属镉(锌)盐与1,5-二(2-乙基咪唑)戊烷(BEIP)、5-羟基间苯二甲酸(5-OHH2IP)在水热条件下合成了配合物[Cd(BEIP)(Cl)2]n(1)和[Zn(BEIP)(5-OHIP)]n(2),并对其进行了元素分析、IR及X射线衍射法表征.晶体结构研究表明:配合物1属于正交晶系,Pca21空间群.配合物2属于单斜晶系,P21空间群,β=100.542(4)°.配合物1是由配体1,5-二(2-乙基咪唑)戊烷连接镉离子形成一维链状结构.而配合物2是由配体间苯二甲酸连接锌离子形成一维链状结构,该一维链通过1,5-二(2-乙基咪唑)戊烷连接成二维网络结构,进而通过氢键连接成三维超分子结构.此外,配合物1和2具有较高的稳定性和较好的荧光性能,配合物2对甲基橙染料有一定的降解作用.%Reaction of CdCl2 or ZnCl2 ·4H2O,5-hydroxyisophthalic acid (5-OHH2IP) as well as 1,5-bis (2-ethylimidazolyl)pentane (BEIP) results in formation of a 1D [Cd (BEIP) (Cl)2]n (1) and 2D [Zn (BEIP) (5-OHIP)]n (2).X-ray diffraction crystal structure analysis shows that 1 crystallizes in orthorhombic system,space group Pca21,while 2 is of monoclinic,space group P21 withβ3=100.542(4)°.In 1,the 1,5-bis (2-ethyl-imidazolyl)pentane links all the Cd atoms into a 1D chain.In 2,the carboxylate group with μ2-η1:η1 coordination mode links metal atoms to give a 1D zigzag chain structure,which forming the 2D layer through Zn-N interactions by BEIP ligands.Finally the 2D layers are further assembled into 3D framework by the H-bond interaction.In addition,the properties of complexes 1 and 2 have been investigated,which exhibit good fluorescence in the solid state at room temperature.And complex 2 shows good photocatalytic activity for the degradation of methyl orange solution.CCDC:1523229,1;1523230,2.