title: Ethylene trimerisation and tetramerisation catalysts with polar-substituted diphosphinoamine ligands.
abstract: Chromium-based catalyst systems with polar-substituted diphosphinoamine ligands are selective for either trimerisation or tetramerisation of ethylene, depending on the position of the polar groups on the aryl rings.
authors.affiliation: Sasol Technology (Pty) Ltd, R&D Division, 1 Klasie Havenga Road, Sasolburg 1947, South Africa. matthew.overett@sasol.com
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Overett
authors.forename: Kevin
authors.initials: K
authors.lastname: Blann
authors.forename: Annette
authors.initials: A
authors.lastname: Bollmann
authors.forename: John T
authors.initials: JT
authors.lastname: Dixon
authors.forename: Fiona
authors.initials: F
authors.lastname: Hess
authors.forename: Esna
authors.initials: E
authors.lastname: Killian
authors.forename: Hulisani
authors.initials: H
authors.lastname: Maumela
authors.forename: David H
authors.initials: DH
authors.lastname: Morgan
authors.forename: Arno
authors.initials: A
authors.lastname: Neveling
authors.forename: Stephanus
authors.initials: S
authors.lastname: Otto