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Supramolecular [6] Chochin and 'Big Mac' ~[+] Made from Chiral Piedfort Assemblies

机译:超分子[6] Chochin和“巨无霸”〜[+]由手性Piedfort组件制成

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Facile chemical synthesis of the natural chiral-pool-derived host 1 and its subsequent crystallization ("supramolecular synthesis") from different solverts yielded crystalline assemblies. Crystal structure determinations of five of the so formed solvent-inclusion compounds (1a-1e) reveal hexagonal symmetries in four cases. The structural charcacterstics of these chiral host-guest ensembles with varying stoichiometries can be best described as assemblies formed through intra-pair hydrogen bridges of host molecules into Piedfort pairs of differing complesxity. Hitherto undescribed, these Piedfort pairs also form even larger regular assemblies that we designate "Big Mac" -like shapes. In the only nonhexagonal case, six independent host molecules form a huge supramolecular analogue of [6]benzocyclophane, also known as [6]chochin, extending this giant supermolecule through intermolecular hydrogen bonds into macroscopic (mm-size) dimensions. As all these model systems for solid-state applocations can be envisaged
机译:天然手性池衍生的主体1的容易的化学合成及其随后从不同溶剂中的结晶(“超分子合成”)产生了晶体组装体。如此形成的五种包含溶剂的化合物(1a-1e)的晶体结构测定在四种情况下均显示出六边形对称性。这些具有不同化学计量比的手性客体-客体集合的结构特征可以最好地描述为通过主体分子的对内氢桥成不同复杂性的Piedfort对形成的组装体。迄今未曾描述,这些Piedfort对还形成了更大的常规装配,我们将其指定为“ Big Mac”形。在唯一的非六边形情况下,六个独立的宿主分子形成[6]苯并环烷的巨大超分子类似物,也称为[6]胆碱,将这种超大分子通过分子间的氢键扩展到宏观(毫米)尺寸。因为可以设想所有这些用于固态分配的模型系统

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