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机构地区:[1]凯里学院化学与材料工程学院,贵州凯里556011
出 处:《云南大学学报(自然科学版)》2017年第6期1035-1039,共5页Journal of Yunnan University(Natural Sciences Edition)
基 金:国家自然科学基金(21501079);贵州省科学技术基金(黔科合J字[2015]2130号);贵州省教育厅自然科学研究项目(黔教合KY字[2015]454号);凯里学院自然科学研究博士专项课题(BS201418)
摘 要:以5,5’-(ethane-1,2-diyl)-bis(oxy)diisophthalic acid为配体,采用溶剂热法合成一个单核新颖一维链Zn配合物{[Zn(H_2edc)(H_2O)_3]·DMF}n(1).通过X射线单晶衍射、元素分析、红外光谱和粉末衍射对其进行结构表征,并且研究了配合物的荧光性质.单晶解析表明,配合物1为三斜晶系P-1空间群,晶胞参数为a=0.7186 0(5)nm,b=1.253 15(14)nm,c=1.293 63(12)nm,α=78.223(9)°,β=88.372(7)°,γ=87.521(8)°.配合物1为由单核锌通过配体连接形成一维链结构,进而通过氢键连接为三维超分子结构.荧光测试表明,配合物1的发射光谱较配体的发射光谱有明显的红移,这是由于配体到金属Zn2+的电荷迁移所致.A novel 1D chain compound with the formula t [ Zn ( H2 edc) ( H2 O) 3 ] · DMF } n ( 1 ) has been synthesized by solvothermal method of the Zn( NO3 )2 · 6H2O and 5,5'- (ethane-1,2-diyl-bis(oxy) diisoph- thalic acid (H4edc) .The compound has been characterized by single-crystal X-ray diffraction,elemental analy- ses, Fourier transform infrared (FT-IR) spectra and powder X-ray diffraction (PXRD), and the fluorescence of compound 1 was studied.Compound 1 belongs to triclinic P-1 space group,and the cell parameters a = 0.71860 (5) nm,b= 1.253 15(14) nm,c = 1.293 63(12) nm,α = 78.223 (9) ° ,β= 88.372(7) ° ,and γ= 87.521 (8) °.The structure of compound 1 is a 1D chain which is formed by mononuclear Zn ion linked by H4edc ligands, and forming a 3D supermolecular structure by hydrogen bonds. Fluorescence research shows that the emission spec- trum of compound 1 occurs large red shift compared with H4edc ligand, owing to the ligand-to-metal Zn2~ charge transfer.
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