TRIS(PYRAZOYL) BASED ANIONS

摘要

The present invention provides an olefin polymerization pro-catalyst that includes at least one multidentate ligand. The pro-catalyst includes a Group 3 to 10 transition or lanthanide metal and one or more anionic or neutral ligands in an amount that satisfies the valency of the metal such that the pro-catalyst has a net zero charge. The present invention also discloses a method for making the pro-catalyst.