Conformational extremes in the supramolecular assemblies of para-sulfonato-calix[8]arene

Abstract

Two complex solid state structures of para-sulfonato-calix[8]arene are described, showing extremes in the macrocyclic conformation; one is planar and nearly circular, the other an inverted double cone. The differences in the molecular conformations lead to highly different packing arrangements in the structures.