A tetragonal molecular cage and polymeric macrocyclic complex based on a clip-like bis-pyridyl-bis-amide ligand
作者:Ya-Meng Li、Ya-Hui Yu、Yu-Han Peng、Ben-Lai Wu、Hong-Yun Zhang
DOI:10.1080/00958972.2012.703778
日期:2012.8.20
bis-pyridyl-bis-amide ligand, N,N′-bis(pyridin-3-yl)-2,6-pyridinedicarboxamide (bppdca) with nickel(II) and cobalt(II) salts resulted in a tetragonal molecular cage, [Ni2(bppdca)4(SCN)4] (1), and a 1-D polymeric macrocyclic complex, [Co(bppdca)(SO4)(CH3OH)(DMF)] n ·nCH3OH (2) (DMF = N,N′-dimethylformamide). Compound 1 features a tetragonal cage-like structure. In each cage, four bppdca ligands are twisted in
双吡啶基双酰胺配体 N,N'-双(吡啶-3-基)-2,6-吡啶二甲酰胺 (bppdca) 与镍 (II) 和钴 (II) 盐的反应产生了四方分子笼、[Ni2(bppdca)4(SCN)4] (1) 和一维聚合物大环络合物 [Co(bppdca)(SO4)(CH3OH)(DMF)] n ·nCH3OH (2) (DMF = N,N'-二甲基甲酰胺)。化合物 1 具有四方笼状结构。在每个笼子中,四个 bppdca 配体在同一方向上扭曲,这赋予笼子手性。然而,由于相邻笼的扭曲或螺旋方向相反,1是一个内聚体,整体上不表现出手性。化合物 2 具有一维双链结构,包含 Co4(SO4)4(bppdca)2 大环亚基。