...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the Chemical Society of Japan >Chemistry of Anthracene-Acetylene Oligomers. XIX. Construction of Higher 1,8-Anthrylene-Alkynylene Macrocycles: Synthesis, Structures, and Conformational Analysis of Cyclic Hexamer and Dodecamer
【24h】

Chemistry of Anthracene-Acetylene Oligomers. XIX. Construction of Higher 1,8-Anthrylene-Alkynylene Macrocycles: Synthesis, Structures, and Conformational Analysis of Cyclic Hexamer and Dodecamer

机译：蒽 - 乙炔低聚物的化学。 XIX。 较高的1,8-炔基 - 炔基宏γ的构建：循环六聚体和十二脉的合成，结构和构象分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Macrocyclic 1,8-anthrylene hexamer and dodecamer with acetylene and diacetylene linkers were synthesized by the metal-catalyzed cyclization of an acyclic hexamer with terminal alkyne units, and characterized by NMR and mass spectroscopy. The structure and conformational mobilities of their macrocyclic frameworks were analyzed by DFT calculations and H-1 NMR spectroscopy. The cyclic hexamer takes various parallelogram structures with the diacetylene linkers located at various positions, and those structures interconvert rapidly on the NMR time scale. The dodecamer tends to exist as highly folded structures that undergo exchange between several conformations rather slowly at room temperature. The intramolecular pi center dot center dot center dot pi interactions between anthracene units have a distinct effect on the structural features as well as the electronic spectra.
机译：通过与末端炔烃单元的金属催化环化的金属催化环化合成丙烯酸1,8-炔醇六聚六聚体和丁二酰胺，通过末端炔烃单元的金属催化环化合成，并通过NMR和质谱。 通过DFT计算和H-1 NMR光谱分析其宏细胞骨架的结构和构象迁移。 环状六聚醚采用各种平行四边形结构，其具有位于各个位置的二乙炔连接物，并且这些结构在NMR时间尺度上迅速转换。 DoDecamer倾向于以高度折叠的结构存在，在室温下几个构象之间经历交换。 蒽单元之间的分子内Pi中心点中心点中心点PI相互作用对结构特征以及电子光谱具有明显的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号