Cationic Rare‐Earth Polyhydrido Complexes: Synthesis, Structure, and Catalytic Activity for the <i>cis</i>‐1,4‐Selective Polymerization of 1,3‐Cyclohexadiene

Abstract

Rare activity from rare earths: Cationic rare-earth hydrides show regio- and stereoselectivity for the polymerization of 1,3-cyclohexadiene (CHD) to afford soluble crystalline cis-1,4-linked poly(CHD) that was previously unavailable. These cationic clusters are made by treating the corresponding neutral complexes with a borate activator (see scheme; Cp′: C5Me4SiMe3). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z603450_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.