Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Catalytic Properties of Zirconocene-Based Systems in 1-Hexene Oligomerization and Structure of Metal Hydride Reaction Centers

Lyudmila Parfenova
* ORCID logo ,
Pavel Kovyazin
,
Almira Bikmeeva
,
Eldar Palatov
,
Pavel Ivchenko
ORCID logo ,
Ilya Nifant'ev
,
Leonard Khalilov
ORCID logo
Version 1 : Received: 6 December 2022 / Approved: 7 December 2022 / Online: 7 December 2022 (06:16:40 CET)

How to cite: Parfenova, L.; Kovyazin, P.; Bikmeeva, A.; Palatov, E.; Ivchenko, P.; Nifant'ev, I.; Khalilov, L. Catalytic Properties of Zirconocene-Based Systems in 1-Hexene Oligomerization and Structure of Metal Hydride Reaction Centers. Preprints 2022, 2022120116. https://doi.org/10.20944/preprints202212.0116.v1 Parfenova, L.; Kovyazin, P.; Bikmeeva, A.; Palatov, E.; Ivchenko, P.; Nifant'ev, I.; Khalilov, L. Catalytic Properties of Zirconocene-Based Systems in 1-Hexene Oligomerization and Structure of Metal Hydride Reaction Centers. Preprints 2022, 2022120116. https://doi.org/10.20944/preprints202212.0116.v1

Abstract

In spite of large-scale investigations of homogeneous single-site metallocene catalysts and systems based on them, the problem of controlling their activity, chemo- and stereoselectivity with the aim of developing efficient methods for the preparation of practically useful products of alkenes transformation, such as dimers, oligomers, and polymers, still remains topical. Here we studied catalytic activity of differently structured zirconocenes (10 examples of cyclopentadienyl and indenyl complexes) and co-catalysts activating the system, namely HAlBui2, MMAO-12 or (Ph3C)[B(C6F5)4] at low activator/Zr ratios in 1-hexene oligomerization reaction. The influence of catalyst structure and system composition on alkene conversion, type of products formed and reaction stereoselectivity was investigated. The composition of hydride intermediates forming in the systems L2ZrCl2 (L2= ansa-Me2CCp2)-HAlBui2-activator was studied by NMR and the participation of biszirconium hydride complex as the precursor of catalytically active sites of the alkene dimerization reaction was shown.

Keywords

zirconocenes; metal hydrides; methylaluminoxane; perfluorophenyl borates; alkene dimerization; oligomerization; nuclear magnetic resonance

Subject

Chemistry and Materials Science, Organic Chemistry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF Download Supplementary

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Supplementary Files Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.