Metalloboranes. II. Transition Metal Complexes of B10H122-

Article abstract of DOI:10.1021/ic50068a025

Initial studies suggest a substantial scope and chemistry for metalloboranes based on the B₁₀H₁₂^2- ligand and transition metal ions. Three types of complexes have been established: (A) M(B₁₀H₁₂)₂^2- with M representing cobalt, nickel, palladium, and platinum; (B) M(B₁₀H₁₂)L₂ for palladium or platinum with L representing triorganophosphines; (C) M(B₁₀H₁₂)L₃^- for cobalt, rhodium, and iridium with carbon monoxide and phosphine ligands. It is proposed that the B₁₀H₁₂^2- moiety interacts with the transition metal atom primarily as a bidentate ligand to form an 11-atom icosahedral fragment. The two extra hydrogen atoms bridge edges of the open pentagonal face of the icosahedral fragment. Spectral and diffraction data fully support this ligand-metal interaction for all three types of complexes.