Article ID Journal Published Year Pages File Type
1327844 Journal of Organometallic Chemistry 2008 7 Pages PDF
Abstract

(Pentamethylcyclopentadienyl)titanatranes, Cp∗Ti{(O-2,4-Me2C6H2-6-CH2)nN(CH2CH2O)3−n} (n = 0, 1; n = 1, 2; n = 2, 3), featuring three five-membered chelating rings (1) to two six-membered chelating rings (3) in a stepwise fashion through 2 were synthesized from the corresponding tri-hydroxy chelating ligands 1L–3L, respectively, using Cp∗TiCl3 and triethylamine. Cp∗Ti{(O-2-C6H4)3N} (4) having three five-membered chelating rings from fully deprotonated N(C6H4-2-OH)3 (4L) was also synthesized. X-ray analysis shows that 2 and 4 have slightly distorted trigonal bipyramidal geometry around Ti. These compounds exhibited good catalytic activity for the syndiospecific polymerization of styrene in the presence of MAO at various polymerization conditions.

Graphical abstractNew (pentamethylcyclopentadienyl)titanatranes, Cp∗Ti{(O-2,4-Me2C6H2-6-CH2)nN(CH2CH2O)3−n} (n = 0–2) and Cp∗Ti{(O-2-C6H4)3N} were synthesized from Cp∗TiCl3 with the corresponding tri-hydroxy chelating ligands in the presence of NEt3. These compounds exhibited good catalytic activity for the syndiospecific polymerization of styrene at various polymerization conditions.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
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