WEAK POLAR HOST-GUEST INTERACTIONS STABILIZING A MOLECULAR CLUSTER IN A CYCLODEXTRIN CAVITY - C-H-O AND C-H-X CONTACTS IN BETA-CYCLODEXTRIN-BUT-2-YNE-L,4-DIOL HEPTAHYDRATE

In the crystalline title complex, the guest molecules are ordered and the inclusion geometry is stabilized by a system of host-guest O-H...O, C-H...O and C-H...pi contacts; this is an example of weak but crucial polar interactions between the surface of a cyclodextrin cavity and a cluster of polar guest molecules.