Synthesis and Ligand Exchange Control of Ru((eta)2-C2H3YPh)(cod)(depe) (Y = O, S)

Reaction of Ru(cod)(cot) (1) [cod: 1,5-cyclooctadiene, cot: 1,3,5-cyclooctatriene] with phenyl vinyl sulfide or ether in the presence of depe [1,2-bis(diethylphosphino)ethane] gives the new complexes Ru((eta)2-C2H3YPh)(cod)(depe) [Y = S (2), O (3)]. Upon reaction with PMe3, selective ligand exchange of PhOC2H3 takes place exclusively in 3 to give Ru(cod)(depe) (PMe3) (4), whereas 2 gives exchange reaction of either PhSC2H3 or cod giving 4 or Ru((eta)2-C2H3SPh)(PMe3)2(depe) (5).