Chromium Catalysts Supported by a Nonspectator NPN Ligand: Isolation of Single‐Component Chromium Polymerization Catalysts

Abstract

Switchable catalytic activity, from nonselective ethylene oligomerization to trimerization and even polymerization, is shown by 1, depending on the alkyl aluminum compound with which it is activated. AlMe3 or iBu2AlCl resulted in highly active single-component polymerization catalysts (see scheme; R=Me, PE=polyethylene), the activity of which can be switched or inhibited by the presence of an additional alkyl aluminum compound. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z800845_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.