An alternative mechanistic concept for homogeneous selective ethylene oligomerization of chromium-based catalysts: binuclear metallacycles as a reason for 1-octene selectivity?
An alternative concept for the selective catalytic formation of 1-octene from ethylene via dimeric catalytic centers is proposed. The selectivity of the tetramerization systems depends on the capability of ligands to form binuclear complexes that subsequently build up and couple two separate metallacyclopentanes to form 1-octene selectively. Comparison of existing catalytic processes, the ability of the bis(diarylphosphino)amine (PNP) ligand to bridge two metal centers, and the experimental background support the proposed binuclear mechanism for ethylene tetramerization.
Peitz
Stephan
S
Leibniz-Institut für Katalyse an der Universität Rostock e.V., Albert-Einstein-Str. 29A, 18059 Rostock, Germany.
Aluri
Bhaskar R
BR
Peulecke
Normen
N
Müller
Bernd H
BH
Wöhl
Anina
A
Müller
Wolfgang
W
Al-Hazmi
Mohammed H
MH
Mosa
Fuad M
FM
Rosenthal
Uwe
U