Lanthanide coordination polymers constructed by a new semirigid bridging salicylamide ligand: Synthesis, supramolecular structure and luminescence properties
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- 作者：Xue-Qin Song ; songxq@lzjtu.cn ; Ding-Ye Xing ; Yao-Kun Lei ; Meng-Meng Zhao ; Guo-Quan Cheng ; Xiao-Run Wang ; Yun-Qiao Peng
- 关键词：Salicylamide ligand ; Lanthanide coordination polymer ; Crystal structure ; Luminescence properties
- 刊名：Inorganica Chimica Acta
- 出版年：2013
- 出版时间：1 August, 2013
- 年：2013
- 卷：404
- 期：Complete
- 页码：113-122
- 全文大小：2141 K
文摘
A new semirigid exo-bidentate ligand was designed, synthesized, and used as building blocks for constructing lanthanide polymers both with interesting supramolecular structures and luminescent properties. Among a series of lanthanide nitrate complexes which have been characterized by elemental analysis, X-ray powder diffraction, IR spectroscopy and molar conductance analysis, five new coordination polymers have been determined using X-ray diffraction analysis. All the coordination polymers exhibit the same metal-to-ligand molar ratio of 1:1 and the semirigid exo-bidentate ligand as a bridging ligand, reacts with lanthanide nitrates forming a zigzag chain which further interconnected to three dimensional supramolecular structure in aid of cooperative C-H?O hydrogen bond and ¦Ð-¦Ð stacking interactions. The europium and terbium containing compounds exhibit luminescence of the referring trivalent lanthanide ions, giving a red luminescence for EuIII and a green luminescence for TbIII triggered by an efficient antenna effect of the picolylsalicylamide group.