Complexation with diol host compounds. Part 18. Structures and thermal analysis of trans-9,10-dihydroxy-9,10-di-p-tolyl-9,10-dihydroanthracene and its inclusion compounds with acetone, diethyl ether and pyridine

Abstract

Abstract The structure of the host compound trans-9,10-dihydroxy-9,10-di-p-tolyl-9,10-dihydroanthracene and those of its inclusion compounds with acetone, diethyl ether and pyridine have been elucidated. The non-porous α-phase of the host has a structure in which the molecules are packed in layers parallel to the (100) plane, but exhibit no intermolecular hydrogen bonding. The host:guest stoichiometry of each inclusion compound is 1:2, and the structures are each stabilised by O-H…O or O-H…N hydrogen bonds between host and guest. The thermal decompositions of the acetone and diethyl ether compounds are characterised by single endotherms of the guest-release reaction, but the pyridine inclusion compound has a more complex decomposition, characteristic of similar pyridine inclusion compounds.