metallkomplexe containing a 2.6 - diacylpyridin - ligands and their use in the polymerization of ethylene

摘要

A complex of a metal m is selected from the group consisting of transition metals with the following formula (vi): (Iap) m (x)_n (Vi),where m is a metal selected from the group of metals of groups 8 and 9 of the periodic table in the oxidation states " s " + 2 and + 3 is;independently of each x is a group of anionic in nature, which on the metal as the anion in an ionic pair or with a covalent bond of the " σ is bonded " type;"n " for the number of groups x to be sufficient for neutralization of the formal " + s " charge of the metal m is equal to " s " and, if all the x - groups are monovalent; and(Iap) for a neutral organic ligands;characterized in that the ligand (iap) of a mono imine of 2,6 - diacylpyridine of the general formula v comprises: where r 'and r "are each independently of one another hydrogen or an aliphatic hydrocarbon radical having 1 to 10 carbon atoms is,each r_i (i = 1 to 8) independently of one another are hydrogen, c₁-C.₁₀-Alkyl or c₆-C.₁₅-Aryl is, with the proviso that at least one of the r₁ or r₅-Groups is a hydrocarbon residue.