摘要
以醋酸锌,有机三酸2-(3,5-二羧基苄氧基)苯甲酸及长链咪唑配体1,4-BBI在水热条件下合成了一种新型锌配合物[Zn(L)(1,4-BBI)]·H 2O(L=5-羟甲基对苯二甲酸,1,4-BBI=1,4-苯并咪唑)。采用X-单晶衍射技术对配合物进行了结构解析,并通过荧光光谱进行表征。结构分析表明,配合物可归属为单斜晶系,P21/n空间群,晶胞参数为:a=0.80724(8)nm,b=1.63953(16)nm,c=1.67399(15)nm,alpha=gamma=90°,beta=94.930(2)°,V=2.2073(4)nm 3,Z=4。金属Zn 2+离子处于四面体构型中,Zn 2+之间通过5-羟甲基对苯二甲酸的羧基及1,4-BBI的桥联作用,组成为一维链状构型,再通过氢键作用形成三维超分子结构。荧光性质研究显示,配合物的发光主要源于有机配体的π→π*跃迁产生,对溶剂的响应表现为丙酮有荧光猝灭的效果,可作为荧光探针检测丙酮。
A novel zinc complex,Zn(L)(1,4-BBI)·H2O(1)(L=5-hydroxymethylterephthalic acid,1,4-BBI=1,4-benzimidazole),was synthesized by using Zn(Ac)2,2-(3,5-dicarboxybenzyloxy)benzoic acid and 1,4-BBI as organic ligands.The structure was determined by X-ray single crystal diffraction technique and the properties of the complex were characterized by fluorescence analysis.The structure analysis exhibits that the complex belongs to monoclinic system and P21/n space group,and the cell parametersare a=0.80724(8)nm,b=1.63953(16)nm,c=1.67399(15)nm,alpha=gamma=90°,beta=94.930(2)°,V=2.2073(4)nm 3,Z=4.The metal ions Zn 2+are in the tetrahedral configuration.One-dimensional chain structure of the complex are formed by the metal ions linked through the carboxyl group of L and the nitrogen atoms of 1,4-BBI,and then form three-dimensional supramolecular structure through hydrogen bonding.The fluorescence property displays that the fluorescence spectra of the complex could be attributed toπ→π*transition of the organic ligands.The fluorescent response of the complex to the different organic solvents shows the completely quenching effect of acetone,which might be used as a fluorescence probe for acetone.
作者
王韩
刘超
艾伟
王智香
任宜霞
Wang Han;Liu Chao;Ai Wei;Wang Zhixiang;Ren Yixia(College of Chemistry and Chemical Engineering,Shaanxi Key Laboratory of Chemical Reaction Engineering,Yan’an University Key Laboratory of New Energy&New Functional Materials,Yan’an University,Yan’an716000,China)
出处
《山东化工》
CAS
2020年第17期6-8,10,共4页
Shandong Chemical Industry
基金
大学生创新创业训练计划项目(2018026)。
关键词
发光性配合物
晶体结构
荧光性质
溶剂响应
luminescent complex
single-crystal structure
fluorescent feature
solvent response
