三个喹啉氧基乙酰胺镧系(Eu、Gd、Er)配合物的合成、结构及Eu配合物的荧光性质（英文）

Three Lanthanide(Eu, Gd, Er) Complexes with Quinolinyloxy Acetamide Ligand:Syntheses, Crystal Structures and Fluorescence Property of Eu Complex

合成并通过单晶衍射表征了3个稀土配合物Ln(L)(NO3)3(H2O)(L=N-苯基-2-(5-氯-8-喹啉氧基)乙酰胺,Ln=Eu(1),Gd(2),Er(3)),结构与拥有相同有机配体的Pr,Nd和Sm配合物同构。在每个配合物中,十配位的稀土离子采取扭曲的双帽四方反棱柱配位构型,分别与来自1个配体L的2个氧原子和1个氮原子,3个双齿配位硝酸根和1个水分子配位。配合物1能够发射Eu(Ⅲ)离子特征荧光,荧光寿命为437μs。

Three lanthanide（m） complexes Ln（L）（NO3）3（H2O） based on L （Ln=Eu （1）, Gd （2）, Er （3）; L-N-phenyl-2- （5-chloro-quinolin-8-yloxy） acetamide） have been synthesized and characterized by elemental analyses, IR spectra and X-ray diffraction analyses. The results reveal that all three complexes are isostructral with those of the Pr, Nd and Sm complexes bearing same ligand. The Ln（Ⅲ） ion in each complex is surrounded by one tridentate L with NO2 donor set, three bidentate nitrate anions and one water molecule, thus giving bicapped square antiprism coordination geometry. In addition, complex 1 could exhibit characteristic fluorescent emissions of the Eu（Ⅲ） ion in the visible region with the average lifetime being 437 μs. CCDC： 1419225, 1; 1419226, 2; 1419227, 3.