Synthesis and Properties of Achiral Coronands Incorporating the Sulfide and Sulfoxide Functionality

Abstract

A number of polyether coronands incorporating sulfide and sulfoxide functionality and five or six ether oxygen atoms were prepared, their formation of complexes with alkali metal and ammonium salts were studied and the results were compared with analogous phosphorus- containing coronands reported previously. It is evident that ring size played a more important role than the ability of a group to complex in systems with five ether oxygen atoms in which the sulfide-containing coronands actually formed stronger complexes than the corresponding sulfoxide coronands . When the number of ether oxygen atoms in the ring was six, however, it appeared that complexation occurred with the ether oxygen atoms and little contribution came from the sulfur centres.