Descriptions and analyses of guest cavity size and shape in a new family of helical tubuland inclusion crystals

Abstract

The crystal structures of exo-2,exo-6-dihydroxy-2,6-dimethylbicyclo[3.3.1]nonane, syn-2,syn-7-dihydroxy-2,7-dimethyltricyclo[4.3.1.1^13,8]undecane, anti-2,anti-7-dihydroxy-2,7-dimethyltricyclo-[4.3.1.1^3,8]undecane, and syn-2,syn-8-dihydroxy-2,8-dimethyltricyclo[5.3.1.1^3,9]dodecane, four geometrically different instances of the helical tubuland inclusion lattice, are analysed in terms of the structural variables of the host molecules and the lattice, which allow substantial variations in the sizes and shapes of the inclusion cavities. The cavity dimensions are described in detail.