SCG-OXFORD CENTRE OF EXCELLENCE

 

Tungsten imido for ethylene oligomerisation

 

(a)(b)(c)(d)

(e)  (f)(g)(h)

A series of substituted phenyl mono-imido complexes of the type W(NR)Cl4(THF) (R = C6H5, 2,6-Me-C6H3, 3,5-Me-C6H3, 2,4,6-Me-C6H2, 4-OMe-C6H4, 2,6-F-C6H3 and 3,5-CF3-C6H3) have been synthesised and characterised. Reaction of these complexes with solid polymethylaluminoxane (sMAO) leads to immobilisation and in situmethylation of the chloride positions on the surface of the support. Reaction of W(NR)Cl4(THF) with trimethylaluminium (TMA) yields the trimethyl complexes W(NR)Me3Cl. 

 

Recent publications:

Selective ethylene oligomerisation using supported tungsten mono-imido catalysts, C. M. R. Wright, T. M. Williams, Z. R. Turner, J.-C. Buffet, D. O'Hare, Inorg. Chem. Front., (2017), 4, 1048-1060.

Tungsten Imido Catalysts for Selective Ethylene Dimerisation, C. M. R. Wright, Z. R. Turner, J.-C. Buffet, D. O'Hare, Chem. Commun., (2016), 52, 2850-2853.

http://scgcoe.chem.ox.ac.uk/tungsten-imido-for-ethylene-oligomerisation.aspx