Cen Zhong-Min, Li Fa-Si, Ni Qing-Ling, Wang Xiu-Jian, Li Bin
School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China.
Acta Crystallogr C. 2009 Jan;65(Pt 1):m17-20. doi: 10.1107/S0108270108039802. Epub 2008 Dec 6.
In the title compound, poly[hexaaquabis[mu(4)-3,5-bis(carboxylatomethoxy)benzoato]trizinc(II)], Zn(3)(C(11)H(7)O(8))(2)(H(2)O)(6), there are two crystallographically distinct Zn(II) cations which are bridged by polycarboxylate ligands in a mu(4)-bridging mode. A pair of ligands bridges adjacent Zn atoms to give centrosymmetric dimetal building blocks which act as four-connected nodes to be further interlinked into a two-dimensional double-layered framework with (4,4) topology. Other Zn atoms, lying on inversion centres, occupy the cavities of this topological structure. This submission shows a versatile polycarboxylate ligand with rigid and flexible functional groups, the co-operation and complementarity of which would meet the coordination requirements of a variety of topological structures.
在标题化合物聚[六水双[μ(4)-3,5-双(羧基甲氧基)苯甲酸根]三锌(II)]，Zn(3)(C(11)H(7)O(8))(2)(H(2)O)(6)中，有两个晶体学上不同的Zn(II)阳离子，它们由多羧酸盐配体以μ(4)-桥连模式桥连。一对配体桥连相邻的Zn原子，形成中心对称的双金属结构单元，这些结构单元作为四连接节点进一步相互连接成具有(4,4)拓扑结构的二维双层框架。位于对称中心的其他Zn原子占据了这种拓扑结构的空穴。本研究展示了一种具有刚性和柔性官能团的多功能多羧酸盐配体，其协同作用和互补性能够满足各种拓扑结构的配位要求。
