A bisâtrisurea ligand assembles with the tetraalkylammonium halides to form the flat âstaveâ structures or âbarrelsâ that encapsulate multiple R4N+ guests, depending on the size of the halide anion (Clâ or Brâ) and the R4N+ cation.
双三聚体
配体与四烷基卤化
铵结合形成扁平的“板条”结构或“桶状”结构,根据卤化阴离子(Cl⁻或Br⁻)和R4N+阳离子的尺寸,可容纳多个R4N+客体。