The synthesis of a functionally rigid [2]rotaxane incorporating π-electron rich 1,5-disubstituted naphthalene (NP) ring systems, encircled by the π-electron deficient tetracationic cyclophane, cyclobis(paraquat-p-phenylene), is described; in the solid state, the molecules of this donor–acceptor [2]rotaxane line themselves up in parallel π–π stacks of alternating NP ring systems and bipyridinium units, affording an interdigitated superstructure.
描述了功能性刚性[2]轮烷的合成,该轮烷包含富含 π 电子的 1,5-二取代
萘 (NP) 环系统,被缺 π 电子的四阳离子环烷环双(
百草枯对亚苯基)包围;在固态下,这种供体-受体[2]轮烷的分子在交替的 NP 环系统和联
吡啶单元的平行 π-π 堆叠中排列,形成叉指状的超结构。