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Unique Complexation of 1,4-Diaza-1,3-butadiene Ligand on Half-Metallocene Fragments of Niobium and Tantalum

โœ Scribed by Mashima, Kazushi; Matsuo, Yutaka; Tani, Kazuhide


Book ID
126453426
Publisher
American Chemical Society
Year
1999
Tongue
English
Weight
272 KB
Volume
18
Category
Article
ISSN
0276-7333

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Half-Metallocene Tantalum Complexes Bear
โœ Yutaka Matsuo; Kazushi Mashima; Kazuhide Tani ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 79 KB

Activation with AlMe at low temperature converts half-metallocene complexes of tantalum with methyl methacrylate (MMA) and diazadiene ligands such as [Cp\*Ta(ฮท -Cy-DAD)(ฮท -MMA)] (structure shown) into effective catalysts for the polymerization of MMA. Polymerization is complete after 10 min at -20ยฐC