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首页> 外文期刊>Crystal growth & design >Chain, pillar, layer, and different pores: A N-[(3-carboxyphenyl)-sulfonyllglycine ligand as a versatile building block for the construction of coordination polymers
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Chain, pillar, layer, and different pores: A N-[(3-carboxyphenyl)-sulfonyllglycine ligand as a versatile building block for the construction of coordination polymers

机译：链，柱，层和不同的孔：N-[（3-羧基苯基）-磺酰甘氨酸配体作为构建配位聚合物的通用构建基块

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摘要

Five novel coordination polymers containing N-[(3-carboxyphenyl)-sulfonyl]glycine (H3L), namely [Co3L2(mu(2-)bipy)(2)(H2O)(6)](n)center dot 2nCH(3)OH center dot 8nH(2)O (1), [Mn(HL)(mu(2)-bipy)(H2O)(2)](n) center dot nH(2)O (2), [Mn(HL)(mu(2)-bipy)(H2O)](n)center dot 3nH(2)O (3), [Mn(HL)(bipy)(mu(2)- bipy)(0.5)(H2O)](n)center dot 4nH(2)O (4) [Ca(H2O)(4)Cu-2(mu(2)-bipy)(2)L-2]n center dot 4nH(2)O (5) (bipy = 4,4'-bipyridine), were prepared under control by tuning reaction conditions such as pH value, reaction temperature, and starting materials. X-ray structural analyses of 1-5 reveal their structural diversity ranging from one-dimensional (1D) (1), two-dimensional (2D) (2), and noninterpenetrating 3-D porous coordination polymers (3, 4) to a 2-fold 3D interpenetrating network (5). Compound 1 presents a 1D chain structure with alternating [CoL(H2O)](2)(2-) binuclear and [Co(4,4'-bipy)(2)(H2O)(4)](2+) mononuclear units along the a-axis. Polymer 2, which was formed at a comparatively lower temperature, has a 2D structure extended by a HL2- ligand and a monopillar of bipy, A higher temperature was used in the preparation of 3 and 4. In addition, 3 was synthesized also at a higher pH value. In 3, HL2- ligands link the metal ions to form 2D wavelike rectangle-grid layers which are held together through mu(2)-bipy molecules in a double-pillar supporting fashion to give a 3D porous framework. A decrease of the pH value led to the formation of another 3D porous framework 4, in which each Mn center binds two trans-located bipy molecules. One bipy behaves as a terminal ligand, while the other one acts as a bridging ligand extending the 2D layers into a unique 3D porous framework. When calcium hydroxide was used, it led to the construction of a 2-fold 3D interpenetrating network of 5 where the Cu atoms are joined by bipy ligands to generate a 1D zigzag chain. The thermogravimetric (TG) and powder X-ray diffraction (PXRD) measurements reveal that both 3 and 4 are stable after dehydration. All of these suggest that the ligand of H3L is a versatile building block for the construction of metal organic frameworks (MOFs).
机译：包含N-[（3-羧基苯基）-磺酰基]甘氨酸（H3L）的五种新型配位聚合物，即[Co3L2（mu（2-）bipy）（2）（H2O）（6）]（n）中心点2nCH（3 ）OH中心点8nH（2）O（1），[Mn（HL）（mu（2）-bipy）（H2O）（2）]（n）中心点nH（2）O（2），[Mn（ HL）（mu（2）-bipy）（H2O）]（n）中心点3nH（2）O（3），[Mn（HL）（bipy）（mu（2）-bipy）（0.5）（H2O） ]（n）中心点4nH（2）O（4）[Ca（H2O）（4）Cu-2（mu（2）-bipy）（2）L-2] n中心点4nH（2）O（5通过调节反应条件如pH值，反应温度和起始原料在控制下制备）（bipy = 4,4'-bipyridine）。 1-5的X射线结构分析显示它们的结构多样性从一维（1D）（1），二维（2D）（2）和非互穿3-D多孔配位聚合物（3，4）到2折3D互穿网络（5）。化合物1呈现一维链结构，具有交替的[CoL（H2O）]（2）（2-）双核和[Co（4,4'-bipy）（2）（H2O）（4）]（2+）单核单元沿a轴。在较低温度下形成的聚合物2具有HL2-配体和bipy单支柱延伸的2D结构。在制备3和4中使用了较高的温度。另外，在3 pH值较高。在3中，HL2-配体连接金属离子形成2D波浪形矩形网格层，该层通过mu（2）-bipy分子以双支柱支撑方式保持在一起，从而形成3D多孔框架。 pH值的降低导致另一个3D多孔骨架4的形成，其中每个Mn中心结合两个易位的bipy分子。一个Bipy充当末端配体，而另一个Bipy充当桥接配体，将2D层扩展为独特的3D多孔框架。当使用氢氧化钙时，它导致5的2倍3D互穿网络的构建，其中Cu原子通过bipy配体连接以生成1D之字形链。热重（TG）和粉末X射线衍射（PXRD）测量表明，脱水后3和4均稳定。所有这些表明，H3L的配体是构建金属有机骨架（MOF）的通用构建基块。

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