Hydrothermal Synthesis, Structures, and Photoluminescent Properties of Benzenepentacarboxylate Bridged Networks Incorporating Zinc(II)-Hydroxide Clusters or Zinc(II)-Carboxylate Layers
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- 作者：Jing Wang ; Zhuojia Lin ; Yong-Cong Ou ; Nai-Liang Yang ; Yue-Hua Zhang ; Ming-Liang Tong
- 刊名：Inorganic Chemistry
- 出版年：2008
- 出版时间：January 7, 2008
- 年：2008
- 卷：47
- 期：1
- 页码：190 - 199
- 全文大小：723K
- 年卷期：v.47,no.1(January 7, 2008)
- ISSN：1520-510X
文摘
The first coordination compounds of partially or wholly deprotonated benzenepentacarboxylic acid (H5L) weresynthesized in the presence or absence of auxiliary 2,2'-bipyridyl (2,2'-bpy) and 1,10-phenanthroline (phen) ligands,and their crystal structures and photoluminescent properties were characterized. Their formulas are [Zn6(3-OH)2(L)2(H2O)6]n (1), [Zn5(3-OH)2(HL)2(2,2'-bpy)2]n (2), [Zn2(HL)(phen)2(H2O)2]n (3), and [Zn5(L)2(phen)4(H2O)3]n·2nH2O(4). Both 1 and 2 are three-dimensional (3D) zinc(II)-hydroxide cluster based coordination frameworks. 1 containsdistorted chairlike hexanuclear Zn6(3-OH)2 cluster units as secondary building blocks. Each Zn6(3-OH)2 unit connectssix others through the three-connected nodes of L5- ligands into a 3D rigid and condensed coordination network,whereas in 2, each pentanuclear Zn5(3-OH)2 unit connects the other six ones through the three-connected [HL]4-nodes into a 3D network in the simple cubic packing mode. 3 has two-dimensional (2D) Zn(II)-carboxylatesupramolecular layers constructed from a one-dimensional (1D) coordination chain structure by hydrogen bonds ofthe water and 5-[HL]4- bridges, whereas 4 has 2D coordination layers composed of Zn(II) and 8-L5- bridges.The adjacent coordination assemblies in 3 and 4 are further extended by hydrogen bonds and ··· interactionsinto 3D supramolecular architectures. 1-4 are photoluminescent active materials, and their photofluorescent propertiesare closely related to their intrinsic structure arrangements.