Issue 41, 2009
From the journal:

Dalton Transactions

Activation of a bis(phenoxy-amine) precatalyst for olefinpolymerisation: first evidence for an outer sphere ion pair with the methylborate counterion†

Gianluca Ciancaleoni,ab   Natascia Fraldi,bc   Peter H. M. Budzelaar,*d   Vincenzo Busicoc  and  Alceo Macchioni*a  

* Corresponding authors

a Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, Perugia, Italy
E-mail: alceo@unipg.it

b Dutch Polymer Institute (DPI), PO Box 902, Eindhoven, the Netherlands

c Dipartimento di Chimica, Università di Napoli Federico II, Via Cintia, Napoli, Italy

d Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada

Abstract

A bis(phenoxy-amine)ZrMe2 complex (1) was synthesized and activated with B(C6F5)3 obtaining an ion pair (2) having the MeB(C6F5)3− counterion in the second coordination sphere as deduced by NMR studies. Both DFT calculations and NMR investigations suggest that the activation is coupled with a change of the binding modality of the tetradentate ligand from cis(N,N)-trans(O,O) in the octahedral dimethyl precursor 1 to cis(N, N)-cis(O,O) in the ion pair 2.

Graphical abstract: Activation of a bis(phenoxy-amine) precatalyst for olefin polymerisation: first evidence for an outer sphere ion pair with the methylborate counterion

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Article information

DOI
https://doi.org/10.1039/B908805A
Article type
Communication
Submitted
05 May 2009
Accepted
23 Jun 2009
First published
02 Jul 2009

Dalton Trans., 2009, 8824-8827

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Activation of a bis(phenoxy-amine) precatalyst for olefin polymerisation: first evidence for an outer sphere ion pair with the methylborate counterion

G. Ciancaleoni, N. Fraldi, P. H. M. Budzelaar, V. Busico and A. Macchioni, Dalton Trans., 2009, 8824 DOI: 10.1039/B908805A

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