Selenium-Bridged Silver Clusters

2 Selenium-Bridged Silver Clusters The reaction chemistry of Ag(I) and 

Two projections of the 652 selenium substructure in 103. Se black spheres, SeR gray 

P7 and ps bridges (Ag Se = 2.44—3.30 A), and are arranged with the Se centers of the nBuSe groups to form layered arrangements of selenium. 

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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). 

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