Wu Chuan-De, Lin Wenbin
Department of Chemistry, CB#3290, University of North Carolina, Chapel Hill, NC 27599, USA.
Dalton Trans. 2006 Oct 14(38):4563-9. doi: 10.1039/b606817k. Epub 2006 Aug 8.
Six homochiral coordination polymers 1-6 based on an enantiopure elongated and bent bipyridine ligand were synthesized and characterized by single-crystal X-ray diffraction studies. The framework structures of all six compounds were built up from similar 1D polymeric chains composed of 46-membered metallomacrocycles. Four distinct packing patterns were observed for this family of coordination polymers. With the exception of 1, the anions do not coordinate to the metal centers and reside in the open channels. Single-crystal X-ray diffraction studies show that the structures of these coordination polymers are sensitive to the anions even though they do not coordinate to the metal centers. The framework structures are somewhat tolerant of the change of metal centers and their local coordination environments. Gas sorption measurements on 1 suggest that chiral porous solids can be obtained with the present 1D coordination polymeric building blocks.
基于对映体纯的细长弯曲联吡啶配体合成了六种同手性配位聚合物1-6，并通过单晶X射线衍射研究对其进行了表征。所有六种化合物的骨架结构均由由46元金属大环组成的相似一维聚合物链构成。观察到该系列配位聚合物有四种不同的堆积模式。除了1之外，阴离子不与金属中心配位，而是存在于开放通道中。单晶X射线衍射研究表明，尽管这些配位聚合物中的阴离子不与金属中心配位，但其结构对阴离子敏感。骨架结构对金属中心及其局部配位环境的变化具有一定的耐受性。对1进行的气体吸附测量表明，使用目前的一维配位聚合物构建块可以获得手性多孔固体。
