Seven Copper Coordination Polymers Based on 5‑Iodo-Isophthalic Acid: Halogen-Related Bonding and N‑Donor Auxiliary Ligands Modulating Effect
收藏资源简介：
A series of copper coordination polymers of [Cu3(OH)2(5-iipa)2(phen)3(H2O)·4.5(H2O)]n (1) [Cu(5-iipa)(phen)(H2O)]n (2), [Cu(5-iipa)(bpe)·2(H2O)]n (3), [Cu(5-iipa)(p-bix)]n (4), [Cu(5-iipa)(bbi)]n (5), [Cu2(5-iipa)2(bbi)·0.5(H2O)]n (6), and [Cu(5-iipa)(bpp)·H2O]n (7) (phen = 1,10-phenanthroline, bpe = 1,2-bis(4-pyridyl)ethane, p-bix = 1,4-bis(imidazol-1-ylmethyl)-benzene, bbi = 1,1′-(1,4-butanediyl)bis(imidazole), bpp = 1,3-bi(4-pyridyl)propane) were hydro(solvo)thermally synthesized through the reaction of divalent copper salts, 5-iodo-isophthalic acid (5-H2iipa), and N-donor ancillary ligands. Single-crystal X-ray diffraction analyses on these complexes revealed that noncovalent interactions were found to be predominant in constructing these supramolecular architectures. Compounds 1–5 all possess three-dimensional (3D) supramolecular structures based on O···I, I···I, I···π, and π···π interactions. Compound 6 exhibits a complicated three-dimensional (3D) framework with a new (6·72)2(63·72·8)2(63·78·82·92) topology, while 7 features a 3D 3-fold interpenetrating network with a (4,4)-connected (3.85)(32·83·9) topology. A systematically structural description of these polymers indicates both halogen-related interactions and N-donor auxiliary ligands have a significant effect on the coordination network assembly. Their thermal analysis, X-ray diffraction, and UV–vis absorption spectra have also been investigated as well.
一系列铜配位聚合物，其化学式分别为[Cu₃(OH)₂(5-碘代间苯二甲酸根（5-iipa）)₂(1,10-菲咯啉（1,10-phenanthroline，phen）)₃(H₂O)·4.5H₂O]ₙ（化合物1）、[Cu(5-iipa)(phen)(H₂O)]ₙ（化合物2）、[Cu(5-iipa)(1,2-双(4-吡啶基)乙烷（1,2-bis(4-pyridyl)ethane，bpe）)(H₂O)₂]ₙ（化合物3）、[Cu(5-iipa)(1,4-双(咪唑-1-基甲基)苯（1,4-bis(imidazol-1-ylmethyl)benzene，p-bix）)]ₙ（化合物4）、[Cu(5-iipa)(1,1′-(1,4-丁二基)双(咪唑)（1,1′-(1,4-butanediyl)bis(imidazole)，bbi）)]ₙ（化合物5）、[Cu₂(5-iipa)₂(bbi)·0.5H₂O]ₙ（化合物6）以及[Cu(5-iipa)(1,3-双(4-吡啶基)丙烷（1,3-bis(4-pyridyl)propane，bpp）)(H₂O)]ₙ（化合物7）。该系列聚合物以二价铜盐、5-碘代间苯二甲酸（5-H₂iipa）与含氮辅助配体为原料，通过水（溶剂）热法合成得到。对上述配合物的单晶X射线衍射分析表明，非共价相互作用是构建此类超分子结构的主导因素。化合物1至5均通过O···I、I···I、I···π及π···π相互作用，构筑得到三维（3D）超分子结构。化合物6呈现出一种新型(6·7²)₂(6³·7²·8)₂(6³·7⁸·8²·9²)拓扑的复杂三维（3D）骨架结构，而化合物7则为具有(4,4)-连接(3.8⁵)(3²·8³·9)拓扑的三维三重互穿网络结构。对上述聚合物的系统性结构解析表明，卤键相关相互作用与含氮辅助配体均对配位网络的组装具有显著调控作用。此外，本研究还对这些聚合物开展了热分析、X射线衍射及紫外-可见吸收光谱表征。
