[3]Rotaxanes employing multiple 1,2-bis(pyridinium) ethane binding sites and dibenzo-24-crown-8 ethersDedicated to Professor Christopher J. Willis on the occasions of his retirement and 66th birthday.

Abstract

Two binding sites of the 1,2-bis(pyridinium)ethane type are built into an extended axle on to which two molecules of dibenzo-24-crown ether (DB24C8) can thread to produce the first examples of [3]rotaxanes employing this templating motif.