Complex carbene of transition metals, for the preparation and application by way of catalysts for the polymerisation and copolymerization

摘要

The invention relates to the complex carbene of transition metals. / p & & p & these complexes meet to the formulae vi and vii ci - after in which m is a transition metal other than the tungsten, l and l are ligands of m of valence n, p 0 or 1, m 2 to 9, r is alkyl; r to r is h or optionally substituted alkyl; x o, n or s. / p & & p & application: polymerization and copolymerization alkynes and cycloolefins. & br / (see appended drawing in bopi) & br /