2-取代-8-羟基喹啉配体及其双核锌配合物的合成、晶体结构和性能研究  

Synthesis, Crystal Structures and Properties of One Binuclear Zinc Complex from a Novel 2-Substituted-8-Hydroxyquinoline Ligand

作　　者：袁国赞[1] 荣露露[1] 乔雪龙[1] 夏银盼[1] 郭婷[1] 魏先文[1] 

机构地区：[1]安徽工业大学化学与化工学院,马鞍山243002

出　　处：《无机化学学报》2013年第8期1769-1776,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21201002和21271006);安徽省自然科学基金(1308085QB22);安徽工业大学SRTP(2013027Y)资助项目

摘　　要：本文以8-羟基喹哪啶为起始原料,通过两步反应合成出一种新型的2-取代-8-羟基喹啉配体(E)-2-[2-(4-甲氧苯基)乙烯基]-8-羟基喹啉(HL),并用核磁共振(NMR),液质联用(LC-MS),元素分析(EA)和X-射线单晶衍射对其结构进行了表征。利用溶剂热法,Zn(Ⅱ)离子与HL配位得到一种晶态配合物[Zn2L4](1),单晶X-射线衍射分析其结构是以双核Zn(Ⅱ)作为基本构建单元,利用π…π芳香堆积和非经典C-H…O氢键以及C-H…π3种分子间相互作用,进而形成一个三维的超分子结构;采用荧光和紫外光谱手段对配体HL和Zn(Ⅱ)离子在溶液中的配位行为进行了研究;此外我们还对配体及其双核锌配合物的固相光学性能进行了研究,结果显示化合物1的发射波长相对配体发生红移,并发出黄色光。A 2-substituted-8-hydroxyquinoline ligand （E）-2-[2-（4-Methoxyphenyl）ethenyl]-8-hydroxyquinoline （HL） was synthesized in two steps from the readily available and cheap 8-hydroxyquinaldine and characterized by LC- MS, NMR spectroscopy, elemental analysis and X-ray crystallography. Using solvothermal method, a crystalline complex Zn2L4 （1） was obtained by reacting Zn（Ⅱ） ions with ligand HL. X-ray structural analysis shows that 1 exhibits a binuclear core, which is bridged by two 8-hydroxyquinoline rings. The supramolecular structure of 1 features a 3D supramolecular structure constructed by π...π aromatic stacking interactions, nonclassical C-H..O hydrogen bonds and C-H ...π interactions. The aggregation behavior of zinc salts and HL in solutions was investigated with UV-vis and PL spectra. Additionally, we also studied the photophysical properties of compound 1 by PL. The results showed that complex 1 exhibits a red shift compared with free ligand HL and emits yellow luminescence. CCDC ： 923979,HL;923980,1.

关 键 词：2-取代-8-羟基喹啉 双核配合物 晶体结构 光学性能 

分 类 号：O614.241[理学—无机化学]