Complexes with functional phosphines. Part 18. Ruthenium complexes and clusters with ketophosphine or phosphino enolate ligands

Abstract

Reaction of the ketophosphine Ph₂PCH₂C(O)Ph (L) with [Ru₃(CO)₁₂] in tetrahydrofuran in the presence of Me₃NO affords [Ru₃(CO)₉L₃] which reacts with I₂ to give [{[graphic omitted])Ph](CO)₂}₂]. The iodide bridges are readily cleaved by PEt₃ or L, affording the mononuclear, phosphino enolate complexes [[graphic omitted])Ph}(CO)₂L′][L′= PEt₃ or Ph₂PCH₂C(O)Ph] in which the P atoms are trans to each other. The crystal structure of [{[graphic omitted])Ph](CO)₂}₂] which forms slowly in CH₂Cl₂ solutions of [Ru₃(CO)₁₀L₂] is determined.