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- W1976918893 abstract "Novel titanium and zirconium alkoxo complexes bearing 6,6′-(piperazine-1,4-diyl)-bis-(2,4-di-tert-butylphenolate) ligand (L), LTi2(OiPr)6 (2) and L2Zr2(OBu)4 (3), has been synthesized in acceptable yields by the stoichiometric reaction of L with the respective M(OR)4. All complexes were fully characterized by elemental analysis and NMR spectroscopy, and the molecular structures of the representative complex 2 was confirmed as distorted trigonal bipyramid at titanium (coordination number 5) by single-crystal X-ray diffraction. Pre-catalysts 2–3 are active in ethylene and 1-hexene polymerization in the presence of Et2AlCl/Bu2Mg binary co-catalyst; but there were completely inactive in presence of MAO or Me3Al. Obtained polyethylene and polyhexene samples were of high molecular weight. The results of this study show the unique ability of Mg derivatives to improve the catalytic ability of post-metallocene pre-catalysts." @default.
- W1976918893 created "2016-06-24" @default.
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- W1976918893 date "2015-09-01" @default.
- W1976918893 modified "2023-09-23" @default.
- W1976918893 title "Coordination compounds of titanium and zirconium with 6,6′-(piperazine-1,4-diyl)-bis-(2,4-di-tert-butylphenol) and study of their catalytic activity towards ethylene and 1-hexene polymerizations" @default.
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- W1976918893 doi "https://doi.org/10.1016/j.jorganchem.2014.11.014" @default.
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