Abstract
A new, stoichiometric activation mode is presented for Cr-PNP (PNP = diphosphinoamine) complexes for ethylene tetramerization catalysis. To access suitable precatalysts, two robust Cr(III) multiaryl compounds were synthesized as THF adducts. These complexes are supported by a facially coordinated bis(aryl) ligand with an additional ether donor. From these precursors, Cr-PNP tris(hydrocarbyl) complexes were synthesized. Using 1 equiv of Brønsted acid as an activator, an active species for the catalytic tetramerization of ethylene was produced, without the need for excess alkylaluminum reagents.
Original language | English |
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Pages (from-to) | 4107-4110 |
Number of pages | 4 |
Journal | Organometallics |
Volume | 36 |
Issue number | 21 |
DOIs | |
State | Published - 13 Nov 2017 |