Coordination polymers with bis(2-benzimidazole) ligand as bridging ligand: From 1D chain to 3D microporous structure
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- 作者：Guo-Dong Feng ; Luan Jiang ; Zong-Xiao Li ; Qiang Chen ; Xin-Long Wang ; Kui-Zhan Shao ; Chun-Yi Sun ; Lian-Jie Li ; Ji-Hong Yu ; Zhong-Min Su
- 关键词：Luminescent property metal&ndash ; organic frameworks ; Hydrothermal synthesis ; Crystal structure ; Luminescent property
- 刊名：Inorganic Chemistry Communications
- 出版年：2012
- 出版时间：October, 2012
- 年：2012
- 卷：24
- 期：Complete
- 页码：247-253
- 全文大小：1318 K
文摘
Three coordination polymers, i.e. [Co(HL)(HBDC)]n (1), [Co(HL)(BDC)0.5]n (2) and {[Zn2(H2L)(BTC)2](H4L)(H2O)2}n (3) (L = 2, 2¡ä-(ethanediyl)bis(1H-benzimidazole), H2BDC = 1, 4-benzenedicarboxylic acid, H3BTC = 1, 3, 5-benzene tricarboxylic acid), have been synthesized under hydrothermal conditions based on bis(2-benzimidazole) and two multi-dentate carboxylate ligands, with different metal ions such as ZnII and CoII. The structures of these coordination polymers have been determined by X-ray single©\crystal diffraction. The diverse coordination modes of the H2L ligand and the varying geometries of multi-dentate carboxylate ligands play an important role in the construction of coordination polymers. Various assembly patterns have been observed, including one-dimensional (1D) chain (1), two-dimensional (2D) 3-connected network structure with honeycomb topology (2), and three-dimensional (3D) 3,4-connected porous structure with (63)(65,8) topology (3). Thermal analyses of the three polymers have been performed and discussed. Furthermore, strong room temperature photoluminescence of compound 3 was observed.