@article{5a35b334b8a74515b3440ad75168f0a3,
title = "Group IV complexes of an amine bis(phenolate) ligand featuring a THF sidearm donor: From highly active to living polymerization catalysts of 1-hexene",
abstract = "A new amine bis(phenolate) ligand bearing a THF donor on a sidearm and several dialkyl complexes of the group IV triad are introduced. The crystal structures of a zirconium dibenzyl complex and a titanium dibenzyl complex were solved, and revealed a strong binding of the oxygen donor of the THF group to the metal center. Upon activation with tris(pentafluorophenyl)borane the zirconium and the hafnium dibenzyl complexes lead to highly active 1-hexene polymerization catalysts. In comparison, titanium complexes (a dibenzyl complex and a dimethyl complex) lead to slower but living polymerization of 1-hexene at room temperature. Polymerization of neat 1-hexene under high dilution conditions was found to be living for an exceptionally long time of 6 days, leading to poly(1-hexene) of Mw=816 000 and PDI=1.09. A block copolymerization of 1-hexene and 1-octene at room temperature could be obtained using the titanium catalysts.",
keywords = "1-Hexene, Copolymerization, Living polymerization, Titanium, Zirconium",
author = "Stanislav Groysman and Israel Goldberg and Moshe Kol and Elisheva Genizi and Zeev Goldschmidt",
note = "Funding Information: This research was supported by the Ministry of Science, Culture and Sports and was also supported in part by the Israel Science Foundation founded by the Israel Academy of Sciences and Humanities. We thank Dr. Edit Y. Tshuva for helpful discussions.",
year = "2003",
month = mar,
day = "10",
doi = "10.1016/S0020-1693(02)01306-3",
language = "אנגלית",
volume = "345",
pages = "137--144",
journal = "Inorganica Chimica Acta",
issn = "0020-1693",
publisher = "Elsevier BV",
}