A new inclusion host: an inclusion complex between a 1,3,5-triaroylbenzene host and a benzene guest stabilized by aromatic CH···O hydrogen bonds

Abstract

A methoxy-functionalized C 3-symmetrical 1,3,5-triaroylbenzene derivative was prepared by cyclotrimerization of a substituted aryl ethynyl ketone. This material was found to form a stable inclusion complex with benzene in a host:guest ratio of 1:1 as revealed by X-ray crystallography. The solid state structure appears to be stabilized by aromatic CH···O hydrogen bonds between the benzene guest and the triaroylbenzene host.