Silver polyhedron

In the case of selenium-bridged copper clusters, it was found that there is a structural transition from molecular spherical structures towards cutouts of the bulk structure when the clusters reach 70 copper atoms. An analogous structural transformation has not yet been found in the case of sulfur-bridged silver clusters. For etample, the dication [Ag7oS2o(SPh)28(dppm)2o] in 94 shows a sheD-like sulfur substructure that consists of an inner Sg and an outer S40 polyhedron (Figure 3.73). 

A similar ligand syntone 375 has been self-assembled in [163] with silver(I) cations to give a AgsLs coordination capsule 728 by Scheme 4.160. It has a trigonal bipyramidal polyhedron with two ligand syntones as an enantiomeric pair this capsule encapsulates solvent acetonitrile molecules [163]. 

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