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The Question of the Cr Oxidation State in the {Cr(SNS)} Catalyst for Selective Ethylene Trimerization: An Unanticipated Re‐Oxidation Pathway
Author(s) -
Temple Claire,
Jabri Amir,
Crewdson Patrick,
Gambarotta Sandro,
Korobkov Ilia,
Duchateau Robbert
Publication year - 2006
Publication title -
angewandte chemie
Language(s) - German
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.200602240
Subject(s) - chemistry , ethylene , catalysis , oxidation state , polymer chemistry , medicinal chemistry , organic chemistry
Wieder aktiv werden! Die erstmals beobachtete Oxidation von Chrom(II) durch Trimethylaluminium führt ungeachtet der reduzierenden Umgebung zu einem kationischen Organochrom(III)‐Komplex (siehe Bild; SNS=CySCH 2 CH 2 N(H)CH 2 CH 2 SCy, Cy=Cyclohexyl, X=[Me 6 Al 2 Cl]). Diese Reaktion bietet einen möglichen Weg zur Reaktivierung des Katalysators.

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