| abstract |
The present invention includes novel ligands which may be utilizednas part of a catalyst system. A catalyst system of the present invention is antransition metal - ligand complex. In particular, the catalyst system includesna transition metal component and a ligand component comprising anNitrogen atom and/or functional groups comprising a Nitrogen atom,ngenerally in the form of an imine functional group. In certain embodiments,nthe ligand component may further comprise a phosphorous atom.nPreferred ligand components are bidentate (bind to the transition metal atntwo or more sites) and include a nitrogen - transition metal bond. Thentransition metal - ligand complex is generally cationic and associated with anweakly coordinating anion. n A catalyst system of the present invention may further comprise anLewis or Bronsted acid. The Lewis or Bronsted acid may be complexednwith the ligand component of the transition metal-ligand complex. |