...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Metallophilicity-assisted assembly of phosphinebased cage molecules
【24h】

Metallophilicity-assisted assembly of phosphinebased cage molecules

机译：

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

A family of supramolecular cage molecules has been obtained via self-assembly of the phosphine-gold coordination complexes following an aurophilicity-driven aggregation approach. Use of the di- (PP) or tridentate (PPP) phosphine ligands P_n (n = 2, 3) with rigid polyaromatic backbones leads to clean formation of the coordination P_n(Au(tht))_n~(n+) species, sequential treatment of which with H_2O/NEt_3 and excess of H2NBut gives the finite 3D structures of two major types. The cylindrical-like hexametallic cages (PPAu_2)_3(μ_3-NBu~t)_2~(2+) are based on the diphosphines PP = 1,4-bis(diphenylphosphino)benzene (1), 4,4'-bis(diphenylphosphino)biphenyl (2), 4,4"-bis(diphenylphosphino)terphenyl (3), while the triphosphine PPP (1,3,5-tris(diphenylphosphinophenyl)benzene) produces a tetrahedral dodecagold complex (PPPAu_3)_4-(μ_3-NBut)_4~(4+) (4). The cages 1-4 have been studied using the ESI-MS and 1H, 31P NMR spectroscopy, and the crystal structures of 1 and 4 were determined by an X-ray diffraction study. The NMR spectroscopic investigations showed that cylindrical complexes 1-3 undergo twisting-like interconversion of the helical P?M isomers in solution, while 4 is a stereochemically rigid compound retaining its axially chiral architecture. The difference in dynamic behavior was rationalized using computational studies with density functional methods.

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