Molecular double chains and 3-D supramolecular frameworks with open channels assembled from 1D copper(II) maleate coordination polymers with chelating aromatic amine ligands by noncovalent interactions
作者:Ping Liu、Yao-Yu Wang、Dong-Sheng Li、Hai-Rui Ma、Qi-Zhen Shi、Gene-Hsiang Lee、Shie-Ming Peng
DOI:10.1016/j.ica.2005.05.028
日期:2005.9
Hdpa = 2, 2′-dipyridylamine and tpy = 2,2′:6′,2″-terpyridine), have been synthesized and their crystal structures, IR spectra, thermal analyses, magnetic properties were determined. In 1 and 2, the maleate ligands link adjacent metal centers to form 1D coordination polymeric chains. Furthermore, the carboxylate oxygen atoms and the aromatic chelate ligands provide potential supramolecular recognition
两种一维配位聚合物[Cu(mal)(Hdpa)] n(1)和[Cu(mal)(tpy)]·4H 2 O} n(2)(mal =马来酸酯,Hdpa = 2,2'-已合成了二吡啶胺和tpy = 2,2':6',2''-吡啶(吡啶),并确定了它们的晶体结构,IR光谱,热分析和磁性能。在1和2中,马来酸酯配体连接相邻的金属中心以形成1D配位聚合物链。此外,羧酸根氧原子和芳香族螯合配体为非共价相互作用提供了潜在的超分子识别位点,从而形成了更高的尺寸。在1,每对1D链通过活性胺(–NH–)氢与芳香族π–π堆积相互作用形成的牢固氢键相互识别,从而生成拉链状双链。相反,当用tpy取代dpa进一步增强π-π芳族堆积相互作用时,复合物2通过前所未有的芳族π-π堆积相互作用直接构建为2D拉链状层,而相同方向的芳族螯合配体同时附着在两侧链和显着的C–H⋯O氢键。这些层是通过氢键构成的,并形成具有1D明渠的3D超