Cationic 2,6-bis(imino)pyridine iron and cobalt complexes: synthesis, structures, ethylene polymerisation and ethylene/polar monomer co-polymerisation studies - Britovsek, GJP; Gibson, VC; Spitzmesser, SK; Tellmann, KP; White, AJP; Williams, DJ (JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2002)