新型锌(Ⅱ)配合物合成、晶体结构和光谱分析(英文)

Syntheses,crystal structure and spectroscopic analyses of a new zinc(Ⅱ) complex

利用3,4,5-三甲氧基苯甲酸和2-甲基咪唑与锌(Ⅱ)配合,合成一种新型配合物[Zn(tm-ba)2(meim)2](tmba为3,4,5-三甲氧基苯甲酸根,化学式为(OCH3)3C6H4COO—;meim为2-甲基咪唑),通过元素分析和红外及荧光光谱技术表征,配合物的分子结构已由单晶X-射线衍射确定.该配合物晶体为正交晶系,空间群Pca21,其中的四配位锌原子周围有两个甲基咪唑配体的两个氮原子和两个tmba配体的两个氧原子围绕,形成四面体配位方式.除静电作用外,由N—H…O形成的氢键网络稳定了配合物的晶格.

A new zinc（Ⅱ） complex with 3,4,5-trimethoxybenzoic acid and 2-methylimidazole [Zn（tmba）2（meim）2]（tmba=（OCH3）3C6H4COO—,meim=2-methylimidazole） has been synthesized and characterized by elemental analyses and spectroscopic techniques（FT-IR and fluorescence）.The molecular structure of the complex has been determined by the single crystal X-ray diffraction.The complex crystallizes in the orthorhombic system with space group Pca21,where the four coordinated Zn atoms are surrounded by two nitrogen atoms of two meim ligands and two oxygen atoms of two tmba ligands in a tetrahedron geometry.Besides electrostatic interaction,hydrogen bonding network formed by N—H…O stabilizes crystal lattice in the complex.