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首页> 外文期刊>Crystal growth & design >Organoamino Phosphonium Cations as Building Blocks for Hierarchical Supramolecular Assemblies
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Organoamino Phosphonium Cations as Building Blocks for Hierarchical Supramolecular Assemblies

机译：有机氨基Ph阳离子作为分层超分子组装的基础。

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摘要

Organoamino phosphonium cations of formula [P(NHR)_4]~+ offer four hydrogen bonding sites that are arranged in tetrahedral fashion around the central phosphorus atom. This arrangement generates novel supramolecular building blocks that are distinct from the commonly planar NH donor systems, such as urea and guanidine. The supramolecular aggregation of these cations in the presence of chloride and several carboxylate anions is described. The carboxylate salts are obtained either by anion exchange reactions with phosphonium chlorides or by protonation reaction of the neutral phosphine imine P(NPh)(NHPh)3. X-ray structure analyses of the title compounds show that they form hierarchical structures ranging from 1D chains to 2D sheets and 3D networks. Control over the dimensionality of the supramolecular structure can be achieved by modulating the steric bulk of the phosphonium cation.
机译：式[P（NHR）_4]〜+的有机氨基phospho阳离子提供四个氢键合位点，它们围绕中心磷原子以四面体方式排列。这种布置产生了不同于通常为平面的NH供体系统的新颖的超分子结构单元，例如尿素和胍。描述了在氯化物和几种羧酸根阴离子存在下这些阳离子的超分子聚集。通过与氯化either的阴离子交换反应或通过中性膦亚胺P（NPh）（NHPh）3的质子化反应获得羧酸盐。标题化合物的X射线结构分析表明，它们形成了从1D链到2D图纸和3D网络的分层结构。可以通过调节the阳离子的立体体积来实现对超分子结构的尺寸的控制。

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