School of Chemistry & Physics, The University of Adelaide, Adelaide, SA 5005, Australia.
Dalton Trans. 2011 Dec 7;40(45):12374-80. doi: 10.1039/c1dt10853k. Epub 2011 Oct 17.
A series of metallo-macrocyclic based coordination polymers has been prepared from flexible amide ligands N-6-[(3-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid (L1-CH(3)) and N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid (L2-CH(3)). In all but one case, self-assembled dinuclear metallo-macrocyclic units form the basis of the polymeric structures, whereby discrete metal centres, and dinuclear or trinuclear clusters, are linked by the self-assembled macrocycles to give 1D and 2D coordination polymers. In one instance, a 1D coordination polymer is formed in a reaction carried out under ambient conditions; when the same reaction is conducted under solvothermal conditions a 2D structure is formed. In all but two of these structures, the polymeric chains and nets are close-packed within the crystals. In the case of a 6,3-connected 2D coordination polymer {Cd(3)(L2-CH(3))(3)(NO(3))(L2)(CH(3)OH)(2)·12½H(2)O}(n) (9), small oval channels percolate down the a-axis of the unit cell.
已制备出一系列基于金属大环的配位聚合物，所用的柔性酰胺配体为 N-6-[(3-吡啶甲基氨基)羰基]-吡啶-2-羧酸（L1-CH(3)）和 N-6-[(4-吡啶甲基氨基)羰基]-吡啶-2-羧酸（L2-CH(3)）。除一种情况外，均为自组装双核金属大环单元构成聚合物结构的基础，其中离散的金属中心和双核或三核簇通过自组装大环连接，形成 1D 和 2D 配位聚合物。在一种情况下，在环境条件下进行的反应形成 1D 配位聚合物；而当在溶剂热条件下进行相同的反应时，则形成 2D 结构。在除两种情况外的所有这些结构中，聚合物链和网络在晶体内部紧密堆积。在具有 6,3-连接的 2D 配位聚合物{Cd(3)(L2-CH(3))(3)(NO(3))(L2)(CH(3)OH)(2)·12½H(2)O}(n)（9）中，小椭圆形通道沿单元晶胞的 a 轴贯穿。
