On activation by MAO, 2-(imino)pyridine cobalt dichlorides bearing a benzo[b]thiophen-2-yl substituent in the 6-position of the pyridine ring oligomerise ethylene to alpha-olefins with turn-over-frequencies as high as 1.5 106 mol of C2H4 converted (mol of Co h) 1 and productivities as high as 3769 kg of oligomers (mol of Co h bar) 1. Aldimine precursors are more active than ketimine analogues, yet ketimines give higher molecular weight oligomers.
Oligomerisation of ethylene to linear α-olefins by tetrahedral cobalt(II) precursors stabilised by benzo[b]thiophen-2-yl-substituted (imino)pyridine ligands / Blanchini C; Giambastiani G; Mantovani G; Meli A; Mimeau D. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - STAMPA. - 689:(2004), pp. 1356-1361. [10.1016/j.jorganchem.2003.10.034]
Oligomerisation of ethylene to linear α-olefins by tetrahedral cobalt(II) precursors stabilised by benzo[b]thiophen-2-yl-substituted (imino)pyridine ligands
Giambastiani G;
2004
Abstract
On activation by MAO, 2-(imino)pyridine cobalt dichlorides bearing a benzo[b]thiophen-2-yl substituent in the 6-position of the pyridine ring oligomerise ethylene to alpha-olefins with turn-over-frequencies as high as 1.5 106 mol of C2H4 converted (mol of Co h) 1 and productivities as high as 3769 kg of oligomers (mol of Co h bar) 1. Aldimine precursors are more active than ketimine analogues, yet ketimines give higher molecular weight oligomers.
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