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首页> 外文期刊>Crystal growth & design >Crystal Structure of the 9-Anthracene-Carboxylic Acid Photochemical Dimer and Its Solvates by X-ray Diffraction and Raman Microscopy
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Crystal Structure of the 9-Anthracene-Carboxylic Acid Photochemical Dimer and Its Solvates by X-ray Diffraction and Raman Microscopy

机译：9-蒽 - 羧酸光化学二聚体的晶体结构及其通过X射线衍射和拉曼显微镜溶剂化物

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摘要

The photodimerization of anthracene derivatives constitutes a model system for intermolecular [4 + 4] cycloadditions. In this paper we deal with the elusive 9-anthracene-carboxylic case and study the crystal state of the head-to-tail dimer, obtained by the reaction of the monomer in Various solvents both in its unary and solvated forms, by X-ray diffraction, and confocal Raman microscopy in the lattice phonon region. A number of solvates have been identified,and their structures have been solved and here presented. The 9-anthracene-carboxylic add dimer appears to be an exemplary case of a molecular crystal easily prone to host solvent Molecules in the interstices of the framework,generated, by homotholecular hydrogen bonds. Alternatively, the hydrogen bonds between solvent molecules and the carboxylic group may establish supramolecular structures of closely packed architectures. Raman microscopy has also allowed us to investigate the short-lived dimer, which is produced in the crystal-to-crystal photoreaction triggered by the irradiation of the monomer single crystal.
机译：蒽衍生物的光二聚体构成分子间[4 + 4]环加成的模型系统。在本文中，我们应对难以捉摸的9-蒽 - 羧基壳体，并研究通过X射线的单体在各种溶剂中的单体中的单体反应而获得的头尾二聚体的晶体状态衍射和晶格声子区域中的共焦拉曼显微镜。已经鉴定了许多溶剂化物，并且它们的结构已经解决，这里呈现。该9-蒽 - 羧基加二聚体似乎是分子晶体的示例性情况，容易易于在骨架间隙中宿主的溶剂分子，通过具有均质的氢键产生的框架。或者，溶剂分子和羧基之间的氢键可以建立紧密堆积的架构的超分子结构。拉曼显微镜也允许我们研究短寿命的二聚体，其在通过单体单晶的照射触发的晶体到晶体光反应中产生的短寿命二聚体。

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