New precatalysts for olefin polymerization having LX2 pincer ligands

Abstract

Post metallocene zirconium and titanium catalysts with tridentate bis(phenolate)-donor (donor = pyridine, furan, and thiophene) "LX2" pincer ligands have been investigated as propylene and ethylene polymn. catalysts. Analogous Ti, Zr, Ta, and lanthanide complexes with pincer ligands having thiophenolate, anilide, and phospha-anilide X type ligands, as well as those having Nheterocyclic carbene L type donors have been prepd., and their performance as catalysts for olefin polymns. has been explored