Synthesis,crystal structures and luminescence properties of europium and terbium picolinamide complexes  

作　　者：Jun-Hui Xue Xiao-Hui Hua Li-Min Yang Wei-Hong Li Yi-Zhuang Xu Guo-Zhong Zhao Gao-Hui Zhang Ke-Xin Liu Jia-Er Chen Jin-Guang Wu 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,State Key Laboratory for Rare Earth Materials Chemistry and Applications,College of Chemistry andMolecular Engineering,Peking University [2]Department of Chemistry,Renmin University of China [3]State Key Laboratory of Nuclear Physics and Technology,Institute of Heavy Ion Physics,School of Physics,Peking University [4]Department of Physics,Capital Normal University

出　　处：《Chinese Chemical Letters》2014年第6期887-891,共5页中国化学快报（英文版）

基　　金：National Natural Science Foundation of China for the grants(Nos.21001009 and 50973003);the State Key Project for Fundamental Research of MOST(No.2011CB808304);National High-tech R&D Program of China(863 Program) of MOST (No.2010AA03A406);the Scientific Research Project of Beijing Municipal Commission of Education;Beijing Natural Science Foundation(No.KZ201310028032)

摘　　要：The novel coordination structures of europium and terbium chloride-picolinamide complexes （EuCl3-（C6H6N2O）2.5H2O, Eu-pa and TbCl3.（C6H6N2O）2.5H2O, Tb-pa） are reported. The crystal structures in the solid state are characterized by X-ray single crystal diffraction, FTIR, Raman, FIR, THz and luminescence spectroscopy. In the crystal structures, the pyridyl nitrogen and carbonyl oxygen atoms in picolinamide are coordinated to the metal ions to form a five-membered ring structure. The experimental results indicate the similar coordination structures of Eu and Tb-pa complexes and the changes of hydrogen bonds and conformation provide models for the coordination structures of the ligands induced by complexation. The results of lanthanide ions with ligands having amide groups.The novel coordination structures of europium and terbium chloride-picolinamide complexes （EuCl3-（C6H6N2O）2.5H2O, Eu-pa and TbCl3.（C6H6N2O）2.5H2O, Tb-pa） are reported. The crystal structures in the solid state are characterized by X-ray single crystal diffraction, FTIR, Raman, FIR, THz and luminescence spectroscopy. In the crystal structures, the pyridyl nitrogen and carbonyl oxygen atoms in picolinamide are coordinated to the metal ions to form a five-membered ring structure. The experimental results indicate the similar coordination structures of Eu and Tb-pa complexes and the changes of hydrogen bonds and conformation provide models for the coordination structures of the ligands induced by complexation. The results of lanthanide ions with ligands having amide groups.

关 键 词：PICOLINAMIDE FT-IR COMPLEXATION Crystal structure THz 

分 类 号：O621.13[理学—有机化学]