Synthesis and Characterization of Group 4 Fluorinated Bis(amidinates) and Their Reactivity in the Formation of Elastomeric Polypropylene

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• 作者：Tatyana Elkin ; Sinai Aharonovich ; Mark Botoshansky ; Moris S. Eisen
• 刊名：Organometallics
• 出版年：2012
• 出版时间：November 12, 2012
• 年：2012
• 卷：31
• 期：21
• 页码：7404-7414
• 全文大小：648K
• 年卷期：v.31,no.21(November 12, 2012)
• ISSN：1520-6041

文摘

Bis(amidinate) titanium and zirconium bis(dimethylamido) complexes were prepared, and the dynamic behavior of the titanium complex containing perfluorinated amidinate ligand (11) was studied in detail. The variable-temperature NMR revealed the presence of two species in solution, in line with the different connection modes of the ligand to the metal center. The resulting complexes were tested as catalysts in the polymerization of propylene, and the resulting polymers were consistent with elastomeric high-molecular-weight atactic polypropylenes.