A triangular triplatinum(O) complex with bridging germylene ligands: insertion of alkynes into the Pt-Ge bond rather than the Pt-Pt bond

摘要

A new triangular triplatinum(O) complex with bridging diphenyl-germylene ligands, [{Pt(PMe_3)}_3(μ-GePh_2)_3], undergoes insertion of ZC≡CZ (Z = COOMe) into a Pt-Ge bond. The product contains a μ3-η~2(Ⅱ)-CZ=CZ-GePh_2 ligand on the Pt_3 plane. Two molecules of HC≡CZ react to afford the Pt_3 complex with chelating C, Ge- and Ge, Ge-ligands.