Cookies

We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Department of Chemistry

Publication details for Dr Philip W. Dyer

Radcliffe, James E., Batsanov, Andrei S., Smith, David M., Scott, John A., Dyer, Philip W. & Hanton, Martin J. (2015). Phosphanyl Methanimine (PCN) Ligands for the Selective Trimerization/Tetramerization of Ethylene with Chromium. ACS Catalysis 5(12): 7095-7098.

Author(s) from Durham

Abstract

1-Phosphanyl methanimine ligands, R2P–C(Ph)═NR′, may be prepared via a modular, convergent synthesis in good overall yield. Coordination chemistry studies with chromium confirm that they bind in a bidentate κ2-P,N mode. In combination with chromium and an activator, these ligands promote the selective oligomerization of ethylene to 1-hexene and 1-octene with high activity. Notably, an exceptionally high liquid fraction selectivity to saleable products (1-hexene + 1-octene) is observed (>95%), along with a potent ligand dependence, such that selectivity can be varied from pure trimerization through to mixed trimerisation/tetramerisation with a 1-octene:1-hexene (OTH) ratio of 1.7.