Bimetallic effects on ethylene polymerization in the presence of amines: inhibition of the deactivation by Lewis bases.
| Autor: | Radlauer MR; Department of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, USA., Day MW, Agapie T |
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| Jazyk: | angličtina |
| Zdroj: | Journal of the American Chemical Society [J Am Chem Soc] 2012 Jan 25; Vol. 134 (3), pp. 1478-81. Date of Electronic Publication: 2012 Jan 12. |
| DOI: | 10.1021/ja210990t |
| Abstrakt: | Dinickel complexes supported by terphenyl ligands appended with phenoxy and imine donors were synthesized. Full substitution of the central arene blocks rotation around the aryl-aryl bond and allows for the isolation of atropisomers. The reported complexes perform ethylene polymerization in the presence of amines. The inhibiting effect of polar additives is up to 250 times lower for the syn isomer than the anti isomer. Comparisons with mononuclear systems indicate that the proximity of the metal centers leads to the observed inhibitory effect on the deactivation of the catalysts. (© 2012 American Chemical Society) |
| Databáze: | MEDLINE |
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