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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Three interpenetrated frameworks constructed by long flexible N,N '-bipyridyl and dicarboxylate ligands
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Three interpenetrated frameworks constructed by long flexible N,N '-bipyridyl and dicarboxylate ligands

机译:由长的柔性N,N'-联吡啶和二羧酸酯配体构建的三个互穿框架

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Three interpenetrated polymeric networks, {[Co(bpp)(OH-BDC)] (.) H2O}(n) (1) [Ni(bpp)(1.5)(H2O)(OH-BDC)](n) (2) and {[Cd(bpp)(H2O)(OH-BDC)](.)2H(2)O}(n) (3), have been prepared by hydrothermal reactions of 1,3-bis(4-pyridyl)propane (bpp), 5-hydroxyisophthalic acid (OH-H2BDC), with Co(NO3)(2) (.) 6H(2)O, Ni(NO3)(2) (.) 6H(2)O and Cd(NO3)(2) (.) 4H(2)O, respectively. Single-crystal X-ray diffraction analyses reveal that the three compounds all exhibit interpenetrated but entirely different structures. Compound 1 is a fourfold interpenetrated adamantanoid structure with water molecules as space fillers, in which bpp adopts a TG conformation (T = trans, G = gauche). Compound 2 is all interdigitated structure from the interpenetrated long arms of one-dimensional molecular ladders, while bpp in 2 adopts both TT and TG conformations. Compound 3 is a twofold interpenetrated three-dimensional network from a one-dimensional metal-carboxylate chain bridged by TG conformational bpp. The hydrogen bonding interactions in 1-3 further stabilize the whole structural frameworks and play critical roles in their Constructions. (c) 2005 Elsevier Ltd. All rights reserved.
机译:三个互穿的聚合物网络,{[Co(bpp)(OH-BDC)](。)H2O}(n)(1)[Ni(bpp)(1.5)(H2O)(OH-BDC)](n)(2 )和{[Cd(bpp)(H2O)(OH-BDC)](。)2H(2)O}(n)(3)已通过1,3-双(4-吡啶基)水热反应制备丙烷(bpp),5-羟基间苯二甲酸(OH-H2BDC)与Co(NO3)(2)(。)6H(2)O,Ni(NO3)(2)(。)6H(2)O和Cd( NO3)(2)(。)4H(2)O。 X射线单晶衍射分析表明这三种化合物都具有互穿但完全不同的结构。化合物1是具有水分子作为空间填充物的四重互穿金刚烷类结构,其中bpp采用TG构象(T =反式,G =乳脂状)。化合物2都是一维分子梯的互穿长臂的互指结构,而bpp in 2则采用TT和TG构象。化合物3是由TG构象bpp桥接的一维金属羧酸盐链的两倍互穿的三维网络。 1-3中的氢键相互作用进一步稳定了整个结构框架,并在其结构中起关键作用。 (c)2005 Elsevier Ltd.保留所有权利。

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