论文部分内容阅读
合成并通过单晶衍射表征了3个配合物[Cu LCl2]·CH3CN(1),[Cu LBr2]·CH3CN(2)和[Zn L(NO3)2]·CH3CN(3)(L=2-(5-氯-8-喹啉氧基)-1-(吡咯烷-1-基)乙酮)。在配合物1和2中,五配位的铜离子采取扭曲的四方锥配位构型,与来自配体L的2个氧原子和1个氮原子及2个卤离子配位。而在配合物3中,锌离子与1个三齿配位的配体L,1个单齿配位的硝酸根和1个双齿配位的硝酸根配位,配位构型为扭曲的八面体。乙腈溶液中,配合物1和2在410 nm处的最大荧光发射峰与配体L的相似,强度有所降低。而配合物3由于配体到锌离子之间的能量转移,最大荧光发射峰红移至430 nm。
Three complexes [Cu LCl2] · CH3CN (1), [Cu LBr2] · CH3CN (2) and [Zn L (NO3) 2] · CH3CN (3) were synthesized and characterized by single crystal diffraction. (5-chloro-8-quinolinoxy) -1- (pyrrolidin-1-yl) ethanone). In complexes 1 and 2, the five-coordinated copper ions adopt a twisted tetragonal conformation and coordinate to two oxygen atoms, one nitrogen atom and two halide ions from ligand L. In complex 3, zinc ion coordinated with one tridentate ligand L, one monodentate nitrate and one bidentate nitrate, and the coordination structure was twisted Octahedron. In acetonitrile solution, the maximum fluorescence emission peak at 410 nm of complexes 1 and 2 is similar to that of ligand L, and the intensity decreases. However, due to the energy transfer between ligand and zinc ions, the maximum fluorescence emission peak shifts to 430 nm.