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Gao, Rong, Wang, Kefeng, Li, Yan, Wang, Fosong, Sun, Wen-Hua, Redshaw, Carl and Bochmann, Manfred 
ORCID: https://orcid.org/0000-0001-7736-5428
(2009)
2-Benzoxazolyl-6-(1-(arylimino)ethyl)pyridyl cobalt (II) chlorides: A temperature switch catalyst in oligomerization and polymerization of ethylene.
Journal of Molecular Catalysis A: Chemical, 309 (1-2).
pp. 166-171.
Abstract
A series of cobalt (II) complexes ligated by 2-(2-benzoxazolyl)-6-(1-(arylimino)ethyl)pyridines was synthesized and characterized by FT-IR spectroscopic and elemental analysis. The molecular structures of Co1 (Ar=2,6-Me2C6H3), Co2 (Ar=2,6-Et2C6H3) and Co7 (Ar=2,6-Br2C6H3) were determined by single-crystal X-ray diffraction. Compounds Co1 and Co2 display a distorted trigonal-bipyramidal geometry, whereas complex Co7 is a distorted square-pyramid. Upon activation with methylaluminoxane (MAO), all cobalt complexes showed reactivity towards ethylene. There was however an unexpected temperature dependence; whereas, at room temperature oligomerization was observed, giving 1-alkenes with high selectivities, at elevated temperatures polyethylene was produced. This unusual catalytic behavior of the new complexes was investigated in detail under various reaction parameters.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Chemistry |
| UEA Research Groups: | Faculty of Science > Research Groups > Synthetic Chemistry (former - to 2017) Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Chemistry of Materials and Catalysis |
| Depositing User: | Rachel Smith |
| Date Deposited: | 29 Mar 2011 09:28 |
| Last Modified: | 23 Oct 2022 01:50 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/27176 |
| DOI: | 10.1016/j.molcata.2009.05.021 |
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