...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of chemical crystallography >The (-)-gossypol-2,4-pentanedione (1 : 2) inclusion complex
【24h】

The (-)-gossypol-2,4-pentanedione (1 : 2) inclusion complex

机译：（-）-棉酚-2,4-戊二酮（1：2）包合物

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

(-)-Gossypol and 2,4-pentanedione form an inclusion complex in a one-to-two molar ratio. The compound crystallizes in the tetragonal P4(1)2(1)2 space group and has unit cell dimensions of a = b = 10.9966(7) Angstrom and c = 60.213(4) Angstrom. Both solvent molecules are in the enol form and occupy two distinct cavities within the structure. The first cavity is formed between pairs of gossypol naphthalene rings and contains a pair of symmetry-related solvent molecules that each accept a hydrogen bond from one of the surrounding gossypol molecules. The four molecules together form a wedge-shaped assembly that is repeated throughout the cell. The assemblies stack to form columns, and adjacent columns are aligned parallel to form layers. Neighboring layers are oriented at 90degrees angles, which accounts for the fourfold symmetry of the space group. The second solvent cavity is located in isolated pockets that form between the layers. These solvent molecules also accept hydrogen bonds from the surrounding gossypol molecules. Although many gossypol solvates have been reported, this structure is unusual in a number of features. It is the first report of a chiral non-conglomerate gossypol solvate. It is also the only known chiral gossypol inclusion complex to not lose appreciable amounts of solvent when removed from its mother liquor.
机译：（-）-棉酚和2,4-戊二酮以一比二的摩尔比形成包合物。该化合物在四边形P4（1）2（1）2空间群中结晶，其晶胞尺寸为a = b = 10.9966（7）埃和c = 60.213（4）埃。两种溶剂分子均为烯醇形式，并在结构内占据两个不同的腔。第一腔在成对的棉酚萘环之间形成，并且包含一对与对称相关的溶剂分子，每个溶剂分子接受来自周围的棉酚分子之一的氢键。四个分子一起形成一个楔形的组件，该组件在整个细胞中重复出现。组件堆叠以形成列，相邻的列平行对齐以形成层。相邻层以90度角定向，这说明了空间组的四重对称性。第二溶剂腔位于各层之间形成的隔离袋中。这些溶剂分子还接受周围棉酚分子的氢键。尽管已经报道了许多棉酚溶剂化物，但是这种结构在许多特征上是不寻常的。这是手性非团聚棉酚溶剂化物的首次报道。它也是唯一已知的手性棉酚包合配合物，当从其母液中除去时不会损失大量溶剂。

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