کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1324929 | 1499843 | 2016 | 6 صفحه PDF | دانلود رایگان |

• Novel bi- and hexanuclear Ti complexes bearing [O,O,O,O]4− ligand were synthesized.
• In the presence of Et2AlCl or Et3Al2Cl3 these complexes were active in 1-hexene oligomerization.
• The addition of Bu2Mg switched the activity to 1-hexene polymerization.
Novel bi- and hexanuclear titanium (IV) complexes with 2,2′-bis-(hydroxymethyl)-1,1′-biphenole derivative were synthesized. Structure of complexes 4–5 were established by X-ray diffraction. Resulting catalytic systems obtained by pre-catalysts activation by diethylaluminum chloride or ethyl aluminum sesquichloride were active in the 1-hexene oligomerization. Replacement of alkylaluminumchlorides by a {3Et2AlCl + Bu2Mg} binary system results in formation of predominantly isotactic, high molecular weight poly-1-hexene (content of isotactic pentad mmmm 70%). Systems treated with “traditional” activators – MAO and AlR3 were not active.
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Journal: Journal of Organometallic Chemistry - Volume 802, 15 January 2016, Pages 9–14