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Cationic Rare‐Earth Polyhydrido Complexes: Synthesis, Structure, and Catalytic Activity for the cis ‐1,4‐Selective Polymerization of 1,3‐Cyclohexadiene
Author(s) -
Li Xiaofang,
Baldamus Jens,
Nishiura Masayoshi,
Tardif Olivier,
Hou Zhaomin
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200603450
Subject(s) - cationic polymerization , rare earth , polymerization , chemistry , stereoselectivity , catalysis , boron , activator (genetics) , copolymer , polymer chemistry , medicinal chemistry , stereochemistry , organic chemistry , polymer , mineralogy , biochemistry , gene
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′: C 5 Me 4 SiMe 3 ).