Synthesis and Crystal Structures of the Ligand-Stabilized Silver Chalcogenide Clusters [Ag154Se77(dppxy)18] ,[Ag320(StBu)60S130-(dppp)12],[Ag352S128(SrC5H11)96],and [Ag490S188(StC5H11)114]

摘要

For the last few years we have been working on the synthesis and characterization of metal-chalcogenide clusters.For most of the transition metals,one observes the formation of relatively low-nuclearity cluster complexes,such as [Co6E8-(PR3)6] (E=S,Se,Te;R=organic groups) und [Ni34Se22-(PPh3)20].In contrast,for clusters of copper and silver one can find a rich variety of structures.