Zinc coordination polymers with 2,6-Bis(imidazole-1-yl)pyridine and benzenecarboxylate: Pseudo -supramolecular isomers with and without interpenetration and unprecedented trinodal topology

Lee J.-Y.; Chen C.-Y.; Lee H.M.; Passaglia E.; Vizza F.; Oberhauser W.

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Zinc coordination polymers with 2,6-Bis(imidazole-1-yl)pyridine and benzenecarboxylate: Pseudo -supramolecular isomers with and without interpenetration and unprecedented trinodal topology

机译：具有2,6-双（咪唑-1-基）吡啶和苯甲酸酯的锌配位聚合物：伪超分子异构体，具有和不具有互穿性，并具有前所未有的三结点拓扑

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The ligand combination of semirigid 2,6-bis(imidazole-1-yl)pyridine (2,6-bip) and rigid benzenecarboxylate allow the isolation of three new zinc coordination polymers. Hydrothermal synthesis between Zn(NO_3) _2·6H_2O, 2,6-bip, and terephthalic acid under basic condition affords [Zn(1,4-bdc)(2,6-bip)·2H_2O]_n (1) (1,4-bdc =1,4-benzenedicarboxylate), which shows an undulating 2D (4,4)-network with 2-fold interpenetration. Contrastingly, solvothermal synthesis with identical starting materials in DMF, yields [Zn(1,4-bdc)(2,6-bip)·DMF] _n (2), which exhibits noninterpenetrating 2D (4,4)-network. Thus 1 and 2 are pseudo-supramolecular isomeric pair, illustrating the strong effect of guest solvents in controlling the entanglement. A similar hydrothermal reaction to 1 but using 1,3,5-benzenetricarboxylic acid instead yields [Zn _2(μ-OH)(1,3,5-btc)(2,6-bip)·H_2O]_n (3) (btc = benzenetricarboxylate), which exhibits a (3,4,6)-connected 3D framework with an unprecedented {5.6.7}_2{5~2.6.7.8~2} _2{5~4.6~2.7~3.8~4.9 ~2} topology. Compound 1 and 2 show reversible solvent incorporation properties.

机译：半刚性的2,6-双（咪唑-1-基）吡啶（2,6-bip）和硬质苯甲酸根的配体组合可以分离出三种新的锌配位聚合物。在碱性条件下水热合成Zn（NO_3）_2·6H_2O，2,6-bip和对苯二甲酸可得到[Zn（1,4-bdc）（2,6-bip）·2H_2O] _n（1）（1， 4-bdc = 1,4-苯二甲酸），显示出具有2倍互穿的起伏2D（4,4）网络。相反，在DMF中使用相同的起始原料进行溶剂热合成，生成[Zn（1,4-bdc）（2,6-bip）·DMF] _n（2），它显示出非互穿的2D（4,4）网络。因此1和2是伪超分子异构对，说明了客体溶剂在控制缠结方面的强大作用。与1类似的水热反应，但使用1,3,5-苯三羧酸代替生成[Zn _2（μ-OH）（1,3,5-btc）（2,6-bip）·H_2O] _n（3）（ btc =苯三羧酸酯），它展示了（3,4,6）连接的3D框架，具有前所未有的{5.6.7} _2 {5〜2.6.7.8〜2} _2 {5〜4.6〜2.7〜3.8〜4.9〜2拓扑。化合物1和2显示出可逆的溶剂引入性质。

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《Crystal growth & design》 |2011年第4期|共8页
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Lee J.-Y.; Chen C.-Y.; Lee H.M.; Passaglia E.; Vizza F.; Oberhauser W.;
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Zinc coordination polymers with 2,6-Bis(imidazole-1-yl)pyridine and benzenecarboxylate: Pseudo -supramolecular isomers with and without interpenetration and unprecedented trinodal topology

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