Structural Control and Various Observations for Chiral Organic Crystals with Polymorphism

在这项研究中，我们旨在通过有机晶体的多晶性来控制晶态的手性。合成了具有氢键中心的芳香族磺胺类化合物。这些化合物具有手性多晶型。金刚烷基双酚与双吡啶衍生物的共晶通过分子间氢键形成一维螺旋链状结构。从熔体中结晶得到了两种离子液体(1-烷基-3-甲基咪唑六氟磷酸盐)的热力学亚稳晶相。建立了这些离子液体的晶体结构与热学性质之间的关系。

In this study, we aim to control of chirality in crystalline state via polymorphism of organic crystals.Aromatic sulfonamides derivatives which have hydrogen-bonding sites were synthesized. These compounds gave chiral polymorphs. Cocrystal of an adamantane-based bisphenol with a bispyridine derivative formed a helical 1D chain via intermolecular hydrogen bonds. The thermodynamically metastable crystalline phases of two ionic liquids (1-alkyl-3-methylimidazolium hexafluorophosphate salts) were obtained by crystallization from the melt. The relationships between crystal structures and thermal properties of these ionic liquids are established.