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首页> 外文期刊>Crystal growth & design >Solid-State Examination of Conformationally Diverse Sulfonamide Receptors Based on Bis(2-anilinoethynyl)pyridine, -Bipyridine, and -Thiophene
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Solid-State Examination of Conformationally Diverse Sulfonamide Receptors Based on Bis(2-anilinoethynyl)pyridine, -Bipyridine, and -Thiophene

机译:基于双(2-苯胺基乙炔基)吡啶,-联吡啶和-噻吩的构象多样的磺酰胺受体的固态检测

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摘要

Utilizing an induced-fit model and taking advantage of rotatable acetylenic C(sp)-C(sp(2)) bonds, we disclose the synthesis and solid-state structures of a series of conformationally diverse bis-sulfonamide arylethynyl receptors using either pyridine, 2,2'-bipyridine, or thiophene as the core aryl group. Whereas the bipyridine and thiophene structures do not appear to bind guests in the solid state, the pyridine receptors form 2 + 2 dimers with water molecules, two halides, or one of each, depending on the protonation state of the pyridine nitrogen atom. Isolation of a related bis-sulfonimide derivative demonstrates the importance of the sulfonamide NH hydrogen bonds in dimer formation. The pyridine receptors form monomeric structures with larger guests such as BF4 or HSO4, where the sulfonamide arms rotate to the side opposite the pyridine N atom.
机译:利用诱导拟合模型并利用可旋转的炔烃C(sp)-C(sp(2))键,我们公开了使用任何一种吡啶的一系列构象多样的双磺酰胺芳基乙炔基受体的合成和固态结构, 2,2'-联吡啶或噻吩为核心的芳基。尽管联吡啶和噻吩结构在固态下似乎不结合客体,但吡啶受体则根据吡啶氮原子的质子化状态与水分子,两个卤化物或每个形成一个2 + 2个二聚体。相关双磺酰亚胺衍生物的分离证明了在二聚体形成中磺酰胺NH氢键的重要性。吡啶受体与较大的客体(例如BF4或HSO4)形成单体结构,其中磺酰胺臂旋转至与吡啶N原子相反的一侧。

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