Metal complexes as catalysts for the polymerization of unsaturated compounds

(57) Abstract: 1,2 diimine having two at least one nitrogen-containing heterocyclic group bonded via at least one nitrogen atom of the imine nitrogen atom, the periodic table of the elements 8 , can be used as a metal complex for producing ligands having 9 or group 10 transition metal, the metal complex can be used as a polymerization catalyst of the unsaturated compounds. To provide a method for producing a polyolefin by polymerization of unsaturated compounds in the presence of the metal complex and an activator as a catalyst.