title: Structure-reactivity relationships in SHOP-type complexes: tunable catalysts for the oligomerisation and polymerisation of ethylene.
abstract: For over 30 years complexes with the general formula [NiPh(P,O)L] (L = tertiary phosphine; P,O = chelating phosphanylenolato ligand) have been used as highly efficient oligomerisation catalysts suitable for the production of linear alpha-olefins. The same complexes, which are usually referred to as SHOP-type catalysts (SHOP = Shell Higher Olefin Process) can also be used as ethylene polymerisation catalysts, provided they are treated with a phosphine scavenger that selectively removes the tertiary phosphine ligand (L). This Perspective examines the impact of various parameters (influence of the substituents, backbone size, solvent, use of co-catalysts, etc.) on the catalytic outcome of the complexes. Overall, this review shows that the selectivity and activity of the catalyst may be tuned efficiently through directed modification of the P,O chelator.
authors.affiliation: Laboratoire de Chimie Inorganique Moléculaire, Université Louis Pasteur, Institut de Chimie UMR 7177 CNRS, 1 rue Blaise Pascal, 67008 Strasbourg cedex, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Kuhn
authors.forename: David
authors.initials: D
authors.lastname: Sémeril
authors.forename: Dominique
authors.initials: D
authors.lastname: Matt
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Chetcuti
authors.forename: Pierre
authors.initials: P
authors.lastname: Lutz