Two organic-inorganic composites based on first-sphere coordination of calc
ium ions by alpha -cyclodextrin, highlight the possible creation of differe
nt architectures, even when involving identical molecular building blocks a
nd inorganic clusters. In both forms, the mineral and organic matrices form
separate motifs, with 40% of the crystal structure occupied by the mineral
components. Copyright (C) 2000 John Wiley & Sons, Ltd.