Synthesis and structure of group 4 symmetric amidinate complexes and their reactivity in the polymerization of α-olefins

Tatyana Elkin, Naveen V. Kulkarni, Boris Tumanskii, Mark Botoshansky, Linda J.W. Shimon, Moris S. Eisen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The steric properties of various nitrogen substituents on amidines were tuned in order to obtain group 4 mono- and bis(amidinate) dimethylamido or chloride complexes. The amidinate dimethylamido and chloride complexes were prepared, and their solid-state as well as their solution-state structures were studied. After the activation by MAO, these complexes were tested in the polymerization of propylene and ethylene. A noticeable influence of the amidine carbon and nitrogen substituents on the activity of the catalyst and properties of the obtained polymer was observed. Further, a plausible mechanism for the ethylene polymerization process is presented taking into account a combination of ESR-C60 and MALDI-TOF experiments, shedding light on the nature of the catalytic species.

Original languageEnglish
Pages (from-to)6337-6352
Number of pages16
JournalOrganometallics
Volume32
Issue number21
DOIs
StatePublished - 11 Nov 2013
Externally publishedYes

Fingerprint Dive into the research topics of 'Synthesis and structure of group 4 symmetric amidinate complexes and their reactivity in the polymerization of α-olefins'. Together they form a unique fingerprint.

Cite this