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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Discrete stack of an odd number of polarized aromatic compounds revealing the importance of net vs. local dipoles
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Discrete stack of an odd number of polarized aromatic compounds revealing the importance of net vs. local dipoles

机译:离散堆叠的奇数个极化芳族化合物,揭示了净偶极子偶极子和局部偶极子的重要性

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摘要

Three polarized aromatic guest molecules (pyrene-4,5-dione, 1) form a triple-layered stack in the box-shaped cavity of an organic pillared coordination cage in water. The cavity size strictly limits the number of stacked planar guests but does not restrict guest orientation, and thus enables the study of discrete stacks of polarized guests and their preferred conformations. Crystallo-graphic study shows that the guest molecules in the cavity are rotated 120° with respect to each other, canceling the net dipole moment rather than the local dipole moment. The unique conformation of a discrete, triple stack of 1 sharply contrasts to the standard head-to-tail conformation in infinite stacks of 1.
机译:三个极化的芳族客体分子(py-4,5-二酮1)在水中的有机柱状配位笼的盒形腔中形成三层堆叠。腔的大小严格限制了堆叠的平面宾客的数量,但不限制宾客的方向,因此可以研究极化宾客的离散堆栈及其首选构型。晶体学研究表明,腔中的客体分子相对于彼此旋转了120°,从而抵消了净偶极矩,而不是局部偶极矩。离散的三重堆栈1的独特构型与无穷堆栈1的标准头尾构象形成鲜明对比。

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  • 作者单位

    Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

    Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan;

    Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    π-π interactions; aromatic molecule; coordination cage; dipole moment; self-assembly;

    机译:π-π相互作用;芳香分子协调笼偶极矩自组装;

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