Abstract：
The 2,7-fluorenone-linked bis(6-imidazo[1,5-a]pyridinium) salt H2-1(PF6)2 reacts with Ag2O in CH3CN to yield the [2]catenane [Ag4(1)4](PF6)4. The [2]catenane rearranges in DMF to yield two metallamacrocycles [Ag2(1)2](PF6)2. 2,7-Fluorenone-bridged bis-(imidazolium) salt H2-L(PF6)2 (L = 2a, 2b) react with Ag2O in CH3CN to yield metallamacrocycles [Ag2(L)2](PF6)2 with interplanar distances between the fluorenone rings too small for [2]catenane formation. Intra- and intermolecular p···p interactions between the fluorenone groups were observed by X-ray crystallography. The strongly kinked 2,7-fluorenone bridged bis(5-imidazo[1,5-a]pyridinium) salt H2-4(PF6)2 reacts with Ag2O to yield [Ag2(4)(CN)](PF6) while the tetranuclear assembly [Ag4(4)2(CO3)](PF6)2 was obtained in the presence of K2CO3.
摘要：
2,7-芴酮连接的双（6-咪唑并[1,5-a]吡啶鎓）盐H2-1（PF6）2与Ag2O在CH3CN中反应，生成[2]连环烷[Ag4（1）4]（PF6）4。[2]连环烷在DMF中重排以产生两个金属大环[Ag2(1)2](PF6)2。2,7-芴酮桥接的双-（咪唑鎓）盐H2-L（PF6）2（L=2a，2b）与Ag2O在CH3CN中反应，生成金属色环[Ag2（L）2]（PF6）2，芴酮环之间的晶面间距太小，无法形成[2]连环烷。通过X射线晶体学观察了芴酮基团之间的分子内和分子间p··p相互作用。强扭结的2,7-芴酮桥连的双（5-咪唑并[1,5-a]吡啶鎓）盐H2-4（PF6）2与Ag2O反应生成[Ag2（4）（CN）]（PF6），而四核组装[Ag4（4）2（CO3）]（PF6）2在K2CO3存在下获得。
