Synthesis, characterization and crystal structures of Os4Pt2(CO)18 and Os2Pt(CO)10. The reversible formation of a hexanuclear puckered raft cluster from a triangular cluster

Abstract

The triosmium cluster H₂Os₃(CO)₁₀ reacts with dicarbonyldimethylplatinum, (CO)₂PtMe₂, to give one major product in good yield, Os₄Pt₂(CO)₁₈, a compound with a novel puckered raft structure, which upon addition of carbon monoxide splits into two triangular clusters of Os₂Pt(CO)₁₀.