Stereospecific Polymerization of Isoprene with Molecular and MCM‐48‐Grafted Lanthanide( III ) Tetraalkylaluminates | Zendy

Fischbach Andreas | Zendy; Klimpel Michael G. | Zendy; Widenmeyer Markus | Zendy; Herdtweck Eberhardt | Zendy; Scherer Wolfgang | Zendy; Anwander Reiner | Zendy

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Stereospecific Polymerization of Isoprene with Molecular and MCM‐48‐Grafted Lanthanide( III ) Tetraalkylaluminates

Author(s) -

Fischbach Andreas,

Klimpel Michael G.,

Widenmeyer Markus,

Herdtweck Eberhardt,

Scherer Wolfgang,

Anwander Reiner

Publication year - 2004

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.200352730

Subject(s) - isoprene , lanthanide , stereospecificity , polymerization , component (thermodynamics) , chemistry , polymer , polymer chemistry , copolymer , catalysis , organic chemistry , thermodynamics , physics , ion

Hard graft : Heterobimetallic peralkylated complexes [Ln{(μ‐R) 2 (AlR 2 )} 3 ] (R=Me, Et) can be exploited to study metal‐size effects in “Ziegler Mischkatalysatoren”. Binary precatalyst system [Nd(AlMe 3 ) 4 ]/Et 2 AlCl and heterogenized single‐component variants, such as [Nd(AlMe 3 ) 4 ]@Et 2 AlCl@MCM‐48 (see picture) efficiently transform isoprene to a high‐ cis polymer (>99 %).

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