Issue 44, 2007
From the journal:

Dalton Transactions

Synthesis, characterization and reactivity of new complexes of titanium and zirconium containing a potential tridentate amidinato-cyclopentadienyl ligand†‡

Valerio Bertolasi,a   Rita Boaretto,*b   Michele R. Chierotti,c   Roberto Gobettoc  and  Silvana Sosterob  

* Corresponding authors

a Centro di Strutturistica Diffrattometrica, Dipartimento di Chimica, Università di Ferrara, Via Borsari 46, Ferrara, Italy

b Dipartimento di Chimica, Università di Ferrara, Via Borsari 46, Ferrara, Italy
E-mail: rita.boaretto@unife.it
Fax: +39-532-240709
Tel: +39-0532-455755

c Dipartimento di Chimica IFM, Università di Torino, Via P. Giuria 7, Italy

Abstract

Group 4 metal complexes [M(η5-C5Me4SiMe2-η1-N-2R)(NMe2)2] (R = pyridine, pyrazine, pyrimidine, thiazole, M = Ti; R = pyridine, thiazole; M = Zr) containing the tetramethylcyclopentadienyl-dialkylsilyl bridged amidinato as pendant ligand, were synthesized and characterized by elemental analysis, solution 1H, 13C and 15N NMR spectroscopy and experimental 13C and 15N CPMAS in the solid state. The crystal structures of [Ti(η5-C5Me4SiMe2-η1-N-2R)(NMe2)2] (R = pyridine 2a, pyrazine 2b, pyrimidine 2c, thiazole 2d) were determined by single crystal X-ray diffraction studies. All compounds exhibit a distorted tetrahedral geometry, with the ansa-monocyclopentadienyl-amido ligands acting in a bidentate mode. The [M(η5-C5Me4SiMe2-η1-N-2R)(NMe2)2] (R = pyridine, thiazole; M = Zr, Ti) complexes are ethylene polymerization catalysts in the presence of MAO and they are active precursors in regioselective catalytic hydroamination operating with an anti-Markovnikov mechanism.

Graphical abstract: Synthesis, characterization and reactivity of new complexes of titanium and zirconium containing a potential tridentate amidinato-cyclopentadienyl ligand

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/B709923A
Article type
Paper
Submitted
29 Jun 2007
Accepted
20 Aug 2007
First published
06 Sep 2007

Dalton Trans., 2007, 5179-5189

Permissions

Request permissions

Synthesis, characterization and reactivity of new complexes of titanium and zirconium containing a potential tridentate amidinato-cyclopentadienyl ligand

V. Bertolasi, R. Boaretto, M. R. Chierotti, R. Gobetto and S. Sostero, Dalton Trans., 2007, 5179 DOI: 10.1039/B709923A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements