...
首页> 外文期刊>Crystallography reports >Molecular structures and crystal packings of 2-styrylquinoxaline derivatives
【24h】

Molecular structures and crystal packings of 2-styrylquinoxaline derivatives

机译:2-苯乙烯基喹喔啉衍生物的分子结构和晶体堆积

获取原文
获取原文并翻译 | 示例
           

摘要

The crystal and molecular structures of 2-styrylquinoxaline derivatives with different substituents in the styryl fragment are determined. The degree of planarity of the molecules studied varies in a very wide range, from 1.7° to 33.5°. In the ethylene fragment, the double bond is essentially localized. The bicycle-pedal disordering of the ethylene fragment is found in the crystals of the methoxy and oxyacetyl derivatives of 2-styrylquinoxaline. None of the packings contains packing motifs favorable for the photocycloaddition (PCA) reaction with single crystal retention. The crystal packings of these compounds and that of 2-(4-methylstyryl)quinoxaline are characterized by a stacking motif of the head-to-head type, which eliminates the possibility of PCA taking place with single crystal retention but is suitable for this reaction in polycrystalline films. The crystal packing of 2-(3,4-dimethoxystyryl)quinoxaline does not contain elements with stacking interactions.
机译:测定了在苯乙烯基片段中具有不同取代基的2-苯乙烯基喹喔啉衍生物的晶体和分子结构。研究的分子的平面度在1.7°至33.5°的很大范围内变化。在乙烯片段中,双键基本上是局部的。在2-苯乙烯基喹喔啉的甲氧基和氧乙酰基衍生物的晶体中发现了乙烯片段的自行车踏板无序。没有一种填料含有有利于光环加成(PCA)反应且具有单晶固位的填料图案。这些化合物的晶体堆积和2-(4-甲基苯乙烯基)喹喔啉的晶体堆积具有头对头类型的堆积图案,消除了PCA发生单晶保留的可能性,但适用于该反应在多晶膜中。 2-(3,4-二甲氧基苯乙烯基)喹喔啉的晶体堆积不包含具有堆积相互作用的元素。

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