Cyclopentadienyl-ruthenium and -osmium Chemistry. XXXV. Some Ethynyl, Vinylidene and Related Complexes

Abstract

The syntheses of several vinylidene - and ethynyl -ruthenium complexes are described, starting from HC2SiMe3 and RuCl (L)2(η-C5H5)(L= PPh3, PMe3; L2 = dppe ). Their properties and some reactions are reported. The metallacyclic complex [ Ru {C4H2(SiMe3)2}(PMe3)(η-C5H5)][PF6] has also been isolated. The unsubstituted complexes are very reactive; for example, MeOH adds rapidly to the vinylidene to form the C(OMe)Me derivative.