Chromium imine and amine complexes as homogeneous catalysts for the trimerisation and polymerisation of ethylene |
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Authors: | Martin E. Bluhm,Olaf Walter,Manfred Dö ring |
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Affiliation: | Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany |
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Abstract: | Cr(III) complexes of tridendate imine and amine ligands with N, P, O, S donor atoms 1 and 2 have been prepared and tested as catalysts in the oligomerisation and polymerisation of ethylene giving excellent selectivity towards 1-hexene and polymerisation to polyethylene when activated with cocatalysts. X-ray structure analyses of the precatalysts 1a-c, 1i, and 2b are investigated. The metal-ligand binding in 1a and 1b is nearly the same, which leads to similar catalytic activities of these precatalysts. |
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Keywords: | Trimerisation Polymerisation Single-site catalysts Ethylene Chromium |
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