新型双核Zn化合物和双核Ni化合物的合成、晶体结构及荧光性质研究

Synthesis,Crystal Structure and Fluorescence Property of New Dinuclear Zn Complexe and Dinuclear Ni Complexe

采用水合1,10-菲啰啉（Phen·H2O）和3,3＇,4,4＇-偶氮苯四羧酸（ABTC）为配体,分别以Zn（Ⅱ）和Ni（Ⅱ）为金属配位中心,通过溶剂挥发法合成了新型双核Zn化合物[Zn2（ABTC）2（Phen）2（H2O）8]·4H2O和新型双核Ni化合物[Ni2（ABTC）2（Phen）2（H2O）8]·3H2O,利用X-射线单晶衍射仪和元素分析仪对二者的分子结构进行了表征。两种化合物晶系均为三斜晶系,空间群均为P-1（2）。晶体结构表明,在两种化合物中,金属Zn和Ni均是与4个水中的氧原子、1,10-菲啰啉的两个氮原子配位,形成六配位八面体几何构型,两个3,3＇,4,4＇-偶氮苯四羧酸在晶体结构中均是游离状态。两个化合物均通过分子间游离的3,3＇,4,4＇-偶氮苯四羧酸分子作为形成氢键的桥梁,堆积成三维网格结构。在250nm波长激发下,两种化合物分别在405 nm和407 nm处有荧光发射峰。

Two novel dinuclear complexes [Zn2（ ABTC）2（ Phen）2（H2O）8]·4H2O and [Ni2（ ABTC）2（ Phen）2（H2O）8]·3H2O were synthesized based on the ligand Phen,ABTC,Zn（ Ⅱ） and Ni（ Ⅱ） by solvent evaporation method.The structures were confirmed by X-ray single crystal diffraction technique and elemental analysis. The two complexes belong to triclinic,and the space groups are P-1（ 2）.The crystal structures of complexes shows that Zn and Ni are six-coordinated with octahedral coordination geometry by four O atoms from three coordinated water molecules and two N atoms from Phen.The 3-D network structures are built via the hydrogen bonds from the free ABTC as the bridges of hydrogen bonds.Complexes exhibit fluorescence emission peak at 405 nm and 407 nm under excitation of 250 nm,respectively.