一个含氮配体铜配合物的合成、结构及荧光性质  

Synthesis,Crystal Structure and Fluorescence Property of a Copper Coordination Complex with N-Donor Ligand

作　　者：关磊 范博文 王莹 王欣 GUAN Lei;FAN Bowen;WANG Ying;WANG Xin(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2023年第5期29-33,共5页Journal of Liaoning Petrochemical University

基　　金：辽宁省教育厅科学研究经费项目(LJKZ0371)。

摘　　要：以Cu^(2+)为中心离子、4,4’-联吡啶(4,4’-bipy)为辅助配体,通过水热反应得到一个单核Cu配合物Cu_(0.5)(4,4’-bipy)(H_(2)O)·L·0.5(4,4’-bipy)·2H_(2)O(1)(NaL=3-羟基苯磺酸钠)。采用X-射线单晶衍射、元素分析以及红外光谱表征了其结构和组成。结果表明,Cu^(2+)是六配位,呈扭曲的八面体配位构型,与四个4,4’-bipy分子的氮原子以及两个H_(2)O分子的氧原子配位;L^(2-)只平衡化合物1中的正电荷,不与Cu^(2+)配位;Cu^(2+)与4,4’-bipy和H_(2)O分子配位形成方格形层状结构[Cu(4,4’-bipy)_(2)(H_(2)O)_(2)]^(2+),L^(2-)的羟基以及游离的H_(2)O分子分别与层状结构中的H_(2)O分子形成氢键,提高了水分子的热稳定性;化合物1的荧光发射在409 nm,为配体内荧光发射;与NaL配体相比,发生轻微红移,可能是4,4’-bipy配体与Cu^(2+)配位作用所致。A mononuclear Cu complex Cu_(0.5)(4,4′-bipy)(H2O)·L·0.5(4,4′-bipy)·2H_(2)O(1)was obtained by hydrothermal reaction with Cu^(2+)as the central ion and 4,4′-bipy as the nitrogen-containing auxiliary ligand.Its structure and composition were characterized by modern characterization methods,such as X-ray single crystal diffraction,elemental analysis and infrared spectrum.The results show that Cu^(2+)is six coordinated with four nitrogen atoms of 4,4′-bipy molecules and two oxygen atoms of H_(2)O molecules,showing a distorted octahedral coordination configuration.L^(2-)anion only balances the positive charges in compound 1 and does not participate in the coordination of metal Cu^(2+).Cu^(2+)coordinates with 4,4′-bipy and H_(2)O molecules to form a lattice layered structure[Cu(4,4′-bipy)_(2)(H_(2)O)_(2)]^(2+),the hydroxyl group of L^(2-)anion and free H_(2)O molecules form hydrogen bonds with H_(2)O molecules in the layered structure respectively,which increases the thermal stability of H_(2)O molecules in compound 1.The fluorescence emission of compound 1 is at 409 nm,which can be attributed to the intraligand emission state.Compared with the ligand,there is a slight red shift,which may be caused by the coordination between 4,4′-bipy ligand and Cu^(2+).

关 键 词：含氮配体 荧光性质 铜离子 结构 

分 类 号：TE08[石油与天然气工程]