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首页> 外文期刊>Chemistry: A European journal >3D-2D-0D stepwise deconstruction of a water framework templated by a nanoporous organic-inorganic hybrid host
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3D-2D-0D stepwise deconstruction of a water framework templated by a nanoporous organic-inorganic hybrid host

机译：3D-2D-0D逐步解构由纳米多孔有机-无机杂化宿主模板化的水框架

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摘要

The supramolecular salt [H_2pip]_3[Ge(hedp) _2]·14H_2O (1) [H_2pip~(2+)= piperazine cation C_4H_(12)N_2~(2+); hedp~(5-) = deprotonated form of etidronic acid, C_2H _3P_2O_7~(5-)) is reported. This consists of an organic-inorganic hybrid hydrogen-bonded nanoporous framework, the internal surface of which acts as a template for the three-dimensional (3D) clustering of water molecules. The structure and molecular dynamics of this material are characterised by single-crystal X-ray diffraction, thermogravimetric analysis, Raman (H/D isotopic substitution) spectroscopy, and ~2H solid-state (wide-line and MAS) NMR spectroscopy. Material 1 is shown to be unusual because 1) few nanoporous materials exhibit a well-organised 3D framework of water molecules, 2) it provides a unique opportunity to follow experimentally and to rationalise the deconstruction of a 3D water framework and 3) despite the fact that the hybrid framework is a supramolecular salt, the structure does not collapse after dehydration and the final material is crystalline.
机译：超分子盐[H_2pip] _3 [Ge（hedp）_2]·14H_2O（1）[H_2pip〜（2 +）=哌嗪阳离子C_4H_（12）N_2〜（2+）; hedp〜（5-）=乙二膦酸的去质子化形式，报道了C_2H _3P_2O_7〜（5-））。它由有机-无机杂化氢键结合的纳米多孔框架组成，其内表面充当水分子三维（3D）聚类的模板。这种材料的结构和分子动力学特征在于单晶X射线衍射，热重分析，拉曼（H / D同位素取代）光谱和〜2H固态（宽线和MAS）NMR光谱。材料1被证明是不寻常的，因为1）很少的纳米多孔材料表现出组织良好的水分子3D框架; 2）它提供了独特的机会来进行实验跟踪并合理化3D水框架的解构; 3）尽管事实杂化骨架是超分子盐，脱水后结构不会崩溃，最终物质为结晶。

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