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Ring Opening Metathesis Polymerizations of Norbornene and Norbornadiene Derivatives Containing Oxygen: A Study on the Regeneration of Grubbs′ Catalyst.

✍ Scribed by David M. Haigh; Alan M. Kenwright; Ezat Khosravi

Publisher
John Wiley and Sons
Year
2004
Weight
10 KB
Volume
35
Category
Article
ISSN
0931-7597

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Effect of Cocatalysts on the Catalytic A
Effect of Cocatalysts on the Catalytic Activities of Tantalum- and Niobium-Based Catalysts for Ring-Opening Metathesis Polymerization of Norbornene
✍ Yuushou Nakayama; Masaya Tanimoto; Takeshi Shiono 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 128 KB

## Abstract A series of pentavalent tantalum and niobium complexes with aryloxy ligands was prepared, and their catalytic behavior for the ROMP of norbornene was studied in the presence of an alkylaluminum cocatalyst. Tantalum complexes **1**–**4** showed very high activity for the ROMP of NBE in c