The synthesis and characterization of novel covalent organic-inorganic architectures containing organically functionalized supertetrahedra is described. The structures of these unique materials consist of one-dimensional zigzag chains or of honeycomb-type layers, in which gallium-sulfide supertetrahedral clusters and dipyridyl ligands alternate.

The synthesis and characterisation of a hybrid supertetrahedral nanocluster, [Ga10S16(NC7H9)(4)](2-), in which the terminal S(2-) anions have been replaced by covalently bonded amine molecules, is described.

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Organically functionalised supertetrahedral clusters: Two novel coordination polymers, consisting of chiral helical nanotubes and of composite layers, have been obtained by linkage of gallium-sulfide supertetrahedral clusters and dipyridyl ligands (see picture).

The synthesis and characterization of the first anions containing two gallium-sulfide supertetrahedra linked via an organic moiety are described.