title: Tungsten imido catalysts for selective ethylene dimerisation.
abstract: A tungsten imido complex W(NDipp)Me3Cl (Dipp = 2,6-(i)Pr-C6H3) is active for the selective dimerisation of ethylene to yield 1-butene under mild conditions. Immobilisation and activation of W(NDipp)Cl4(THF) on layered double hydroxides, silica or polymethylaluminoxane yields active solid state catalysts for the selective dimerisation of ethylene. The polymethylaluminoxane-based catalyst displays a turnover frequency (4.0 molC2H4 molW(-1) h(-1)) almost 7 times that of the homogeneous catalyst.
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, Oxfordshire OX1 3TA, UK. dermot.ohare@chem.ox.ac.uk.
authors.forename: Christopher M R
authors.initials: CM
authors.lastname: Wright
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, Oxfordshire OX1 3TA, UK. dermot.ohare@chem.ox.ac.uk.
authors.forename: Zoë R
authors.initials: ZR
authors.lastname: Turner
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, Oxfordshire OX1 3TA, UK. dermot.ohare@chem.ox.ac.uk.
authors.forename: Jean-Charles
authors.initials: JC
authors.lastname: Buffet
authors.affiliation: Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, Oxfordshire OX1 3TA, UK. dermot.ohare@chem.ox.ac.uk.
authors.forename: Dermot
authors.initials: D
authors.lastname: O'Hare