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首页> 外文期刊>Crystal growth & design >Experimental and Theoretical Analysis of Two-Fold Helix-Based Chiral Crystallization by Confined Interhelical CH/pi Contacts
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Experimental and Theoretical Analysis of Two-Fold Helix-Based Chiral Crystallization by Confined Interhelical CH/pi Contacts

机译:基于两个折叠螺旋的手性结晶的实验与理论分析由狭窄的晶状体CH / PI触点

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摘要

Controlling chiral crystallization, which remains one of the biggest challenges in crystal engineering, brings enormous advantages in material sciences, especially chiral industries. This work demonstrates that chiral crystallization is controllable by designing structures of 2-fold helices, which affect the manner of interhelical interactions. Here we show an example of chiral crystallization by using achiral primary ammonium carboxylates having simple chemical structures: naphthyl and tert-butyl groups. Their crystal structures were precisely investigated by focusing on hydrogen-bonded 2-fold helices along with theoretical calculations. Consequently, a key role of interhelical CH/Jr contacts in chiral crystallization was found to be not attracting but arranging chiral 2-fold helices. More importantly, a clear difference was found in densities of 2-fold helices and their stacking between chiral and achiral crystals.
机译:控制手性结晶,仍然是水晶工程中最大的挑战之一,在材料科学中具有巨大的优势,尤其是手性行为。 这项工作表明,通过设计2折螺旋的结构来控制手性结晶,这影响了互生相互作用的方式。 在这里,我们通过使用具有简单化学结构的甲基伯铵羧酸盐来展示手性结晶的一个例子:萘基和叔丁基。 通过专注于氢键合的2倍螺旋以及理论计算,精确地研究了它们的晶体结构。 因此,发现在手性结晶中的晶形CH / JR接触的关键作用是不吸引,而是布置手性2折螺旋。 更重要的是,在2折螺旋的密度和手性和成立晶体之间的堆叠中发现了明显的差异。

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  • 来源
    《Crystal growth & design》 |2019年第2期|共7页
  • 作者单位

    Ehime Univ Grad Sch Sci &

    Engn Dept Chem 2-5 Bunkyo Cho Matsuyama Ehime 7908577 Japan;

    Osaka Univ Inst Sci &

    Ind Res 8-1 Mihogaoka Osaka 5670047 Japan;

    Natl Inst Adv Ind Sci &

    Technol Res Ctr Computat Design Adv Funct Mat 1-1-1 Umezono Tsukuba Ibaraki 3058568 Japan;

    Ehime Univ Grad Sch Sci &

    Engn Dept Chem 2-5 Bunkyo Cho Matsuyama Ehime 7908577 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

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