Pseudopolymorphism and polymorphic transition behavior of N-(4′-methoxyphenyl)-2-naphthalenesulfonamide

Sakai T.; Katagiri K.; Uemura Y.; Masu H.; Tominaga M.; Azumaya I.

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Pseudopolymorphism and polymorphic transition behavior of N-(4′-methoxyphenyl)-2-naphthalenesulfonamide

机译：N-（4'-甲氧基苯基）-2-萘磺酰胺的拟多态性和多态性转变行为

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The title compound afforded four different types of crystals as pseudopolymorphs upon crystallization from a variety of different solvents. Single-crystal X-ray analysis revealed that the nonsolvated crystals exclusively formed a zigzag chain motif through hydrogen-bonding interactions (H-bonds). In contrast, the solvent-containing crystals formed a helical chain motif through H-bonds to give rise to channel-shaped network structures. The inner spaces of the channels were occupied by solvent molecules from the crystallization solvent. These solvent-containing crystals could be converted to the nonsolvated crystals by removal of the solvent molecules by drying under reduced pressure at 45 C. They also showed mutual polymorphic transitions via a solvent-exchange process.

机译：从多种不同溶剂中结晶后，标题化合物提供四种不同类型的晶体，为假多晶型物。单晶X射线分析表明，非溶剂化晶体通过氢键相互作用（H键）专门形成了锯齿形链基序。相反，含溶剂的晶体通过H键形成螺旋链基序，从而形成通道形网络结构。通道的内部空间被来自结晶溶剂的溶剂分子占据。通过在45℃下减压干燥除去溶剂分子，可以将这些含溶剂的晶体转化为非溶剂化的晶体。它们还通过溶剂交换过程显示出相互的多晶型转变。

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《Crystal growth & design》 |2013年第1期|共7页
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Sakai T.; Katagiri K.; Uemura Y.; Masu H.; Tominaga M.; Azumaya I.;
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Pseudopolymorphism and polymorphic transition behavior of N-(4′-methoxyphenyl)-2-naphthalenesulfonamide

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