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Polymorphs of Thiazole-Derived Imines Connected to Hydroxyaromatics

机译:噻唑衍生亚胺的多晶型物与羟基芳烃连接

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Conformational polymorphs arising from C-N bond rotation of a methylthiazole ring anchored to a nitrogen atom, which is a constituent of a six-membered intramolecularly hydrogen-bonded system, are studied. We have observed two polymorphs each from 2-(E)-[(5-methylthiazol-2-ylimino)methyl]phenol (1) and 1-(E)-[(5-methylthiazol-2-ylimino)methyl]unaphthalen-2-ol (2). Individual polymorphs are distinguished on the basis of their packing patterns and orientations of functional groups. One polymorph of compound 2, namely polymorph 2b, having Z' = 2, is metastable; this polymorph is generated on heating of polymorph 2a, which has Z' = 1.
机译:研究了由锚固在氮原子上的甲基噻唑环的C-N键旋转引起的构象多晶型物,该分子是六元分子内氢键系统的组成部分。我们从2-(E)-[[(5-甲基噻唑-2-ylimino)甲基]苯酚(1)和1-(E)-[(5-甲基噻唑-2-ylimino)甲基]萘二酚-中分别观察到两个多晶型物2-醇(2)。各个多晶型物根据其堆积方式和官能团的方向进行区分。化合物2的一种多晶型物,即Z'= 2的多晶型物2b是亚稳的;这种多晶型物是在加热Z'= 1的多晶型物2a时产生的。

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