Organometallic macrocyclic chemistry. 8. (1) an unusual metallacycle derived from phosphine-alkynyl thioether coupling

The α,ω-diyne 4,7,10-trithiatrideca-2,11-diyne reacts with [RuCl2(PPh3)3] and KPF6to form the phosphonio-substituted metallatricyclic salt [RuCl(PPh3) {κ4C,S,S′,S″-S(C≡CMe)C2H4SC2H4SC(PPh3)CMe}]PF6arising from the activation of one alkynyl group toward nucleophilic attack by extraneous phosphine. © 2010 American Chemical Society.