Wu Chuan-De, Zhang Lin, Lin Wenbin
Department of Chemistry, CB#3290, University of North Carolina, Chapel Hill, NC 27599, USA.
Inorg Chem. 2006 Sep 4;45(18):7278-85. doi: 10.1021/ic060891x.
Six homochiral coordination polymers 1-6 based on a new enantiopure elongated (S)-2,2'-diethoxy-1,1'-binaphthyl-6,6'-bis(4-vinylpyridine) ligand (L) and divalent metal (Zn, Cd, and Ni) connecting points were synthesized and characterized by single-crystal X-ray diffraction studies. These new homochiral coordination polymers adopt two distinct framework structures: a one-dimensional infinite chain structure with bridging L ligands occupying the axial positions of the metal centers and a two-dimensional rhombic grid structure formed by linking octahedrally coordinated metal centers with four pyridyl groups of bridging L ligands in the equatorial positions. The structures of these coordination polymers are sensitive to the nature of the anions as well as the solvents from which the coordination polymer crystals were grown. Powder X-ray diffraction studies showed that the two-dimensional chiral rhombic grids exhibited porosity, which could potentially find applications in enantioselective separations and catalysis.
基于一种新型对映体纯的细长型（S）-2,2'-二乙氧基-1,1'-联萘-6,6'-双（4-乙烯基吡啶）配体（L）和二价金属（锌、镉和镍）连接点，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。这些新型同手性配位聚合物采用两种不同的骨架结构：一种是一维无限链结构，桥连L配体占据金属中心的轴向位置；另一种是二维菱形网格结构，由八面体配位的金属中心与赤道位置的桥连L配体的四个吡啶基团相连形成。这些配位聚合物的结构对阴离子的性质以及生长配位聚合物晶体所用的溶剂敏感。粉末X射线衍射研究表明，二维手性菱形网格具有孔隙率，这在对映选择性分离和催化方面可能有潜在应用。
