Experimental and Theoretical Study of Zirconocene-Catalyzed Oligomerization of 1-Octene.

ABSTRACT: Zirconocene-catalyzed coordination oligomerization of higher α-olefins is of theoretical and practical interest. In this paper, we present the results of experimental and theoretical study of α-olefin oligomerization, catalyzed by (η5-C5H5)]2ZrX21/1' and O[SiMe2(η5-C5H4)]2ZrX22/2' (X = Cl, Me) with the activation by modified methylalymoxane MMAO-12 or by perfluoroalkyl borate [PhNMe2H][B(C6F5)4] (NBF) in the presence and in the absence of organoaluminium compounds, Al(CH2CHMe2)3 (TIBA) and/or Et2AlCl. Under the conditions providing a conventional mononuclear reaction mechanism, 1' catalyzed dimerization with low selectivity, while 2' initiated the formation of oligomers in equal mass ratio. The presence of TIBA and especially Et2AlCl resulted in an increase of the selectivity of dimerizati

SUBMITTER: Nifant'ev I 

PROVIDER: S-EPMC7407618 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature