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首页> 外文期刊>Crystal growth & design >Coordination polymers with bulky bis(imidazole) and aromatic carboxylate ligands: Diversity in metal-containing nodes and three-dimensional net topologies
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Coordination polymers with bulky bis(imidazole) and aromatic carboxylate ligands: Diversity in metal-containing nodes and three-dimensional net topologies

机译：具有庞大的双（咪唑）和芳香族羧酸酯配体的配位聚合物：含金属的节点和三维网络拓扑中的多样性

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Five new three-dimensional transition metal coordination polymers (CPs) with dia and different aromatic carboxylates, [Cd(oba)(dia) _(0.5)] (1), [Cd(Hbtc)(dia)]?3H _2O (2), and [M _3(2-stp) _2(dia) _6(H _2O) _2] (3a, M = Cd; 3b, M = Co; 3c, M = Ni) were synthesized under hydrothermal condition (dia = 9,10-di(1H-imidazol-1-yl)anthracene; oba = 4,4′-oxybis(benzoate); btc = benzene-1,3,5-tricarboxylate; 2-stp = 2-sulfoterephthalate). Compounds 3a-c are isostructural. The coordination geometries at cadmium in 1, 2, and 3a are capped trigonal prism, pentagonal bipyramid, and octahedron, respectively. This diversity in coordination geometry is in sharp contrast to 3c and previously reported nickel complexes of a similar ligand set. The difference in metal-containing node geometries and carboxylate structures results in diverse network connectivity, including a tcs topology for 1, an unprecedented binodal topology of (4 ~2.6 ~3.8 ~5)(4 ~2.6) for 2, and a rare trinodal topology of (4.6 ~4.8) _2(4 ~3.6 ~3) _2(4 ~4.6 ~(10).8) for 3. Based on secondary building units, the networks in 2 and 3 can be, alternatively, described as rob and pcu (or ilc) nets, respectively. This work shows the effect of the specific ion and the rich potential of using bulky bis(imidazole) and aromatic carboxylate as ligands in the construction of CPs with unusual topologies.
机译：五个新的具有过渡金属和不同芳族羧酸盐的三维过渡金属配位聚合物（CPs）[Cd（oba）（dia）_（0.5）]（1），[Cd（Hbtc）（dia）]？3H _2O（2 ）和[M _3（2-stp）_2（dia）_6（H _2O）_2]（3a，M = Cd; 3b，M = Co; 3c，M = Ni）在水热条件下合成（dia = 9 ，10-二（1H-咪唑-1-基）蒽; oba ＝ 4，4′-氧双（苯甲酸酯）; btc ＝苯-1，3，5-三羧酸苯酯; 2-stp ＝ 2-磺基对苯二酸酯）。化合物3a-c是同构的。镉在1a，2a和3a中的配位几何分别为带顶的三棱柱，五角双锥和八面体。这种配位几何形状的多样性与3c和先前报道的类似配体组的镍配合物形成鲜明对比。含金属的节点几何形状和羧酸盐结构的不同导致了不同的网络连通性，包括1的tcs拓扑，2的（4〜2.6〜3.8〜5）（4〜2.6）的前所未有的二面体拓扑以及罕见的三结点3.的（4.6〜4.8）_2（4〜3.6〜3）_2（4〜4.6〜（10）.8）拓扑。基于二级建筑单元，可以将2和3中的网络描述为rob和pcu（或ilc）网。这项工作显示了特定离子的作用以及使用庞大的双（咪唑）和芳族羧酸盐作为配体在具有异常拓扑结构的CP的构建中的丰富潜力。

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