Coordination compounds of Titanium (IV) and 2-hydroxymethyl-phenol derivatives: their synthesis, structure and catalytic activity in ethylene and 1-hexene polymerizationстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 22 ноября 2015 г.
Аннотация: A series of novel titanium complexes LTiCl2*(iPrOH)2 12-18 and heterobimetallic complex
L2Ti*iPrOLi*THF 19 bearing saligenin-type [O,O]2- ligands 6-11 were synthesized in high yields from
Cl2Ti(OiPr)2 or LiTi(OiPr)5. X-ray structure analyses for 15 and 19 revealed that these complexes
adopt a distorted octahedron or distorted tetragonal pyramid geometry. When activated by binary
activator {3Et2AlCl+Bu2Mg}, complexes 12-19 exhibited moderate to high activities toward ethylene
and 1-hexene polymerization, giving high molecular weight polymers with broad molecular weight
distributions. The results of this study show the unique ability of Li and Mg chlorides to improve the
catalytic ability of post-metallocene pre-catalysts.