| abstract |
The present invention relates to metal complexes consisting of a transition metal and at least one multidentate ligand of the general formula Ia or Ib are constructed, a process for the preparation of the metal complexes, the multidentate ligands themselves and their preparation, catalytically active compositions containing the metal complex according to the invention, the use of the catalytic composition according to the invention for the polymerization or copolymerization of olefins and a process for the polymerization or copolymerization of olefins, wherein the catalytic composition according to the invention is used, and a polymer or a copolymer which can be prepared by the process according to the invention. |