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合成并通过单晶衍射表征了3个稀土配合物[La L2(NO_3)_3]·CH3CN(1),[Ln(L)(NO_3)_3(H_2O)](Ln=Tb(2),Dy(3),L=N-苯基-2-(5-氯-8-喹啉氧基)乙酰胺)。在配合物1中,十二配位的La(Ⅲ)离子采取扭曲的二十面体配位构型,分别与来自2个酰胺配体L的4个氧原子和2个氮原子,及3个双齿配位硝酸根配位。配合物2和3的结构与拥有相同有机配体的Pr、Nd、Sm、Eu、Gd和Er配合物同构。在每个配合物中,十配位的稀土离子与来自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,拥有扭曲的双帽四方反棱柱配位构型。固态配合物2和3在可见区发射强荧光。
Three rare earth complexes [La L2 (NO3) 3] CH3CN (1) and [Ln (L) (NO3) 3 (H20)] were synthesized and characterized by single crystal diffraction. 3), L = N-phenyl-2- (5-chloro-8-quinolinoxy) acetamide). In complex 1, the dodecaspecific La (Ⅲ) ions adopt a twisted icosahedron coordination configuration with four oxygen and two nitrogen atoms from two amide ligands L, and three Bidentate coordination nitrate coordination. The structures of complexes 2 and 3 are isomorphic to the complexes of Pr, Nd, Sm, Eu, Gd and Er with the same organic ligand. In each complex, the ten-coordinated rare earth ion is coordinated with two oxygen atoms and one nitrogen atom from one ligand L, three bidentate nitrate and one water molecule, with twisted Double cap Quartet anti-prism coordination configuration. Solid complexes 2 and 3 emit strong fluorescence in the visible region.