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Recent advances in the area of Olefin Oligomerization via metallacycles that include dimerization, trimerization, tetramerization, and beyond, are reviewed. Studies have found that metallacyclopentane decomposition to 1-butene many not be particularly facile due to the absence of metallacycle expansion. Follow-up studies concentrated on the N-H functionality and the Cr oxidation state and role of MAO show that activities and selectivities to 1-hexene are similar to the original Cr(III) complexes. Nenu and Weckhuysen prepared silica-supported triazacyclohexane complexes, by treating the reduced Phillips polymerization catalyst with triazacyclohexane ligands in dichloromethane. The influence of N-aryl functionality investigated by Killian et al. shows that the selectivity was mainly dependent upon the steric bulk attached to nitrogen, and less so on the group's basicity.

Item Type:	Refereed Article
Research Division:	Chemical Sciences
Research Group:	Inorganic chemistry
Research Field:	Transition metal chemistry
Objective Division:	Manufacturing
Objective Group:	Industrial chemicals and related products
Objective Field:	Industrial gases
UTAS Author:	McGuinness, DS (Dr David McGuinness)
ID Code:	72387
Year Published:	2011
Funding Support:	Australian Research Council (DP0665058)
Web of Science® Times Cited:	466
Deposited By:	Chemistry
Deposited On:	2011-08-25
Last Modified:	2012-05-10
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