基于β二酮配体的三价铕配合物合成与表征  

Synthesis and Characterization of Eu(Ⅲ)Complexes Based on β-Diketone Ligand

作　　者：郑昕怡 杨欣瑜 王依婷 吴姣姣 陈超 ZHENG Xinyi;YANG Xinyu;WANG Yiting;WU Jiaojiao;CHEN Chao(School of Life Sciences, Huzhou University, Huzhou 313000, China)

机构地区：[1]湖州师范学院生命科学学院,浙江湖州313000

出　　处：《湖州师范学院学报》2020年第4期51-57,共7页Journal of Huzhou University

基　　金：湖州师范学院校级科研项目(2018XJKJ39).

摘　　要：以β-二酮配体2-噻吩甲酰三氟丙酮(HTTA)和4,4,4-三氟-1-苯基-1,3-丁二酮(HBTA)为第一配体,三苯基氧膦(TPPO)为第二配体,分别与六水合三氯化铕(EuCl3·6H2O)反应,合成[Eu(TTA)3(TPPO)2]和[Eu(BTA)3(TPPO)2]两个三价铕配合物,并通过氢核磁共振、红外光谱、紫外光谱和X-射线单晶衍射对这两个铕配合物进行表征.结果发现,在铕配合物[Eu(TTA)3(TPPO)2]和[Eu(BTA)3(TPPO)2]中,分别含有三个β-二酮配体和两个三苯基氧膦配体;中心Eu(Ⅲ)离子与β-二酮配体的六个氧原子及三苯基氧膦的两个氧原子配位,呈现八配位的多面棱镜形态;在荧光分析中,当激发波长分别为408 nm和398 nm时,铕配合物[Eu(TTA)3(TPPO)2]和[Eu(BTA)3(TPPO)2]均在615 nm处发射出明亮的红光.Two europium(Ⅲ)complexes were synthesized by reactingβ-diketone ligands including 2-thiophene trifluoroacetone(HTTA)or 4,4,4-trifluoro-1-phenyl-1,3-butanedione(HBTA),and triphenylphosphine oxide(TPPO)with europium(Ⅲ)chloride hexahydrate.The composition of the two synthesized europium(Ⅲ)complexes were determined by nuclear magnetic resonance(1H NMR),IR and UV spectrum and single crystal diffraction.The two europium(Ⅲ)complexes are coordinated in an eight-coordinate form with the six oxygen atoms ofβ-diketone ligands and the two oxygen atoms of TPPO,presenting an approximate multi-faceted prism morphology.In fluorescence analysis,both europium(Ⅲ)complexes emit bright red light at 615 nm when the excitation wavelengths are at 408 nm and 308 nm,respectively.

关 键 词：铕配合物 β-二酮配体 单晶衍射 荧光性质 

分 类 号：O614.121[理学—无机化学]