Metal-Rich Copper Chalcogenide Clusters at the Border Between Molecule and Bulk Phase: The Structures of Cu_(93)Se_(42)(SeC6H4SMe)9-(PPh3)_(18), Cu_(96)Se_(45)(SeC6H4SMe)6(PPh3)_(18), and Cu_(136)S_(56)(SCH2C4H3O)_(24)(dpppt)_(10)

摘要

For many years we have been working in the field of synthesis and characterization of ligand-shielded metal chalcogenide clusters. Examples for such species are copper chalcogenide clusters stabilized by tertiary phosphanes. Compared to the binary Cu2E phases (E: S, Se, Te) these compounds are thermodynamically instable. The phosphane ligands can be cleaved already at mild temperatures, yielding Cu2E nano-particles.