ABSTRACT

We report (bis)aniline 4 which contains a central viologen and its self-assembly with aldehyde 5 and Fe(OTf)₂ to yield tetrahedron 6. Complexation of 4 with CB[7] in the form of CB[7]•4•2PF₆ allows the preparation of assembly 7 which contains 1.95 mechanically interlocked CB[7] units. Assemblies 6 and 7 are hydrolytically unstable due to their imine linkages. Redesign of our system with water stable 2,2ʹ-bipyridine end groups was realised in the form of ligands 11 and 16. Self-assembly of 11 with Fe(NTf₂)₂ gave tetrahedral MOP 12. Isomeric ligand 16 underwent self-assembly with Fe(OTf)₂ to give cube 17. Precomplexation of ligands 11 and 16 with CB[7] gave the acetonitrile soluble CB[7]•11•2PF₆ and CB[7]•16•2PF₆ complexes. Self-assembly of CB[7]•11•2PF₆ with Fe(OTf)₂ gave tetrahedron 13 which contains 1.8 mechanically interlocked CB[7] units. Self-assembly of CB[7]•16•2PF₆ with Fe(OTf)₂ gave cube 13 which contains 6.59 interlocked CB[7] units.

摘要

我们报告了 (bis)aniline 4，它包含一个中心紫精及其与醛5和 Fe(OTf) _{2 的}自组装，以产生四面体6。的络合4中CB的形式，CB [7] [7]• 4 •2PF ₆允许的组件的制备7含有1.95机械互锁CB [7]的单元。组件6和7由于它们的亚胺键而水解不稳定。我们的系统具有水稳定的 2,2'-联吡啶端基的重新设计以配体11和16的形式实现。11与 Fe(NTf)自组装₂ ) ₂得到四面体 MOP 12。异构配体16与 Fe(OTf) ₂进行自组装，得到立方体17。配体11和16与CB[7]的预络合得到乙腈可溶性CB[7]• 11 •2PF ₆和CB[7]• 16 •2PF ₆复合物。CB[7]• 11 • 2PF ₆与Fe(OTf) ₂自组装得到四面体13，其中包含1.8 个机械互锁的CB[7] 单元。CB[7]• 16 • 2PF ₆与Fe(OTf)的自组装₂给出了包含 6.59 个互锁 CB[7] 单元的立方体13。