dimerize nor accept any organic guests, due to their small cavities. Both propanediurea- and glycoluril-based dimers bind halide anions on the convex side of the molecules, even in highly polar organic solvents. This observation brings new insights into the mechanism of cucurbituril formation.
描述了第一个亚甲基桥
丙烷基双
脲基二聚体的合成和超分子性质。这些带有芳族侧壁的二聚体具有分子夹的形状。与基于甘
脲的二聚体不同,这些夹子由于其小腔而既不二聚也不接受任何有机客体。甚至基于丙二
脲和甘
脲的二聚体都在分子凸面上结合卤化物阴离子,即使在高极性有机溶剂中也是如此。该观察结果为
葫芦素形成机理带来了新见解。