Different crystal structures of inclusion complexes formed by syn-2,syn-7-dihydroxy-2,7-dimethyltricyclo[4.3.1.13,8]undecane with ethyl acetate and benzene

Abstract

X-Ray structure determinations show that crystals of syn-2,syn-7-dihydroxy-2,7-dimethyltricyclo[4.3.1.1^3,8]undecane obtained from ethyl acetate solution possess a spontaneously resolved trigonal network of helical canals containing mobile solvent, while crystals of the same compound obtained from benzene are racemic and tetragonal with the solvent trapped in ellipsoidal cavities.