Three Protocols for the Formation of a [3]Pseudorotaxane <i>via</i> Orthogonal Cryptand-Based Host–Guest Recognition and Coordination-Driven Self-Assembly

Abstract

A novel bis(<i>m</i>-phenylene)-32-crown-10-based cryptand <b>1</b> with a pyridine nitrogen atom outside on the third arm was designed and synthesized. Subsequently, host–guest complexation between cryptand <b>1</b> and a selection of bipyridinium guests has been studied. More interestingly, the [3]pseudorotaxane <b>2</b>⊃<b>5</b>₂ was obtained in three methods by utilizing the noninterfering orthogonal nature of coordination-driven self-assembly and host–guest interactions