Adamantyl- and Furanyl-Protected Nanoscale Silver Sulfide Clusters.

The silver salts of 1-adamantanethiol (AdSH) and furan-2-ylmethanethiol (FurCH₂SH) were successfully applied as building blocks for ligand-protected Ag₂S nanoclusters. The reaction of the silver thiolates [AgSAd]_x and [AgSCH₂Fur]_x with S(SiMe₃)₂ and 1,5-bis(diphenylphosphino) pentane (dpppt) afforded three different clusters with 58, 94 and, 190 silver atoms. The intensely colored compounds [Ag₅₈S₁₃(SAd)₃₂] (1), [Ag₉₄S₃₄(SAd)₂₆(dpppt)₆] (2), and [Ag₁₉₀S₅₈(SCH₂Fur)₇₄(dpppt)₈] (3) were structurally characterized by single-crystal X-ray diffraction and exhibit different cluster core geometries and ligand shells. The diameters of the well-defined sphere-shaped nanoclusters range from 2.2 nm to 3.5 nm. [ABSTRACT FROM AUTHOR]