Zirconium complexes of cyclopenta[b]pyridine: synthesis, structure, and olefin polymerization catalysisстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 30 октября 2013 г.
Аннотация:By treatment of Cp*ZrCl3 with the lithium salt of cyclopenta[b]pyridine (LiCpPy) in toluene, the unsymmetrical complex Cp*(eta(5)-Cp-Py)ZrCl2 was prepared in 32% yield. On the evidence of X-ray crystal structure analysis, the bifunctional Cp-Py ligand coordinates Zr in an eta(5)-manner rather than via nitrogen. Cyclopenta[b] pyridine turned out to react with Zr(NMe2)(4) in toluene to form mono-cyclopentadienyl complex (eta(5)-Cp-Py)Zr(NMe2)(3)(Me2NH) in 70% yield. The polymerization of ethylene and the copolymerization of ethylene with 1-hexene or propene catalyzed by Cp*(eta(5)-Cp-Py)ZrCl2 activated with MAO was studied in detail.