Cationic (η3-allyl)metal complexes part XIV. Catalytic oligomerisation of ethylene: A very selective dimerisation catalyst prepared from [(η3-methallyl)Ni(cod)]PF6 and a tris(3-sulphophenyl)-phosphine salt

Article abstract of DOI:10.1016/0304-5102(89)80286-X

The influence of a tris(3-sulfophenyl)phosphine salt on the oligomerization of ethylene catalyzed by [(η³-methallyl)Ni(cod)]PF₆ has been investigated. Introduction of this particular ligand slightly lowers the catalytic activity of the cationic nickel complex, but always results in increased selectivity for dimerization at the expense of the formation of trimers. Selectivities in butenes up to 96% could be obtained.