New ligands, compositions, metal-ligand complexes and arrays with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin...http://www.google.com.au/patents/US6897276?utm_source=gb-gplus-sharePatent US6897276 - Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom