Zirconium Complex of an [OSSO]-Type Diphenolate Ligand Bearing trans-1,2-Cyclooctanediylbis(thio) Core: Synthesis, Structure, and Isospecific 1-Hexene Polymerization

Six-coordinated dibenzyl Zr complex bearing an [OSSO]-type tetradentate ligand was synthesized, and the structure was fully characterized by NMR spectroscopy and X-ray crystallography. The zirconium complex has C 2 symmetry in solution. Owing to an effect of the cyclooctane ring structure, the combi...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2009-09, Vol.131 (38), p.13566-13567
Main Authors: Ishii, Akihiko, Toda, Tomoyuki, Nakata, Norio, Matsuo, Tsukasa
Format: Article
Language:English
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Summary:Six-coordinated dibenzyl Zr complex bearing an [OSSO]-type tetradentate ligand was synthesized, and the structure was fully characterized by NMR spectroscopy and X-ray crystallography. The zirconium complex has C 2 symmetry in solution. Owing to an effect of the cyclooctane ring structure, the combination of the zirconium complex and B(C6F5)3 or (Ph3C)[B(C6F5)4] as the activator exhibited high activity toward polymerization of 1-hexene to yield highly isotactic poly(1-hexene).
ISSN:0002-7863
1520-5126
DOI:10.1021/ja903369q