喹啉氧基乙酰胺的Pr(Ⅲ)、Nd(Ⅲ)、Sm(Ⅲ)配合物的结构、表征和荧光性质（英文）

Pr(Ⅲ), Nd(Ⅲ) and Sm(Ⅲ) Complexes with Quinolinyloxy Acetamide Ligand:Preparation, Structural Characterization and Fluorescence Properties

合成并通过单晶衍射表征了3个同构稀土配合物Ln(L)(NO3)3(H2O)(L=N-苯基-2-(5-氯-8-喹啉氧基)乙酰胺,Ln=Pr(Ⅲ),1;Nd(Ⅲ),2;Sm(Ⅲ),3)。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,2个双齿配位硝酸根和1个水分子配位。配合物3能够发射Sm(Ⅲ)离子特征荧光,荧光寿命为11.7μs。

Three lanthanide （Ⅲ） complexes Ln（L）（NO_3）_3（H_2O） [Ln =Pr（1）, Nd（2） and Sm（3）] based on L（L =Nphenyl-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 the Ln（Ⅲ） ion in each complex is surrounded by one tridentate L with NO_2 donor set, three bidentate nitrate anions and one water molecule, thus giving bicapped square antiprism coordination geometry. In addition, complexes 3 could exhibit characteristic fluorescent emissions of the Sm （Ⅲ） ion in the visible region with the average lifetime being 11.7μs.