Copper(II) complexes of pyridine-oxazoline (Pyox) ligands: coordination chemistry, ligand stability, and catalysis

Hallett, Andrew J., O'Brien, Thomas, Carter, Emma ORCID: https://orcid.org/0000-0001-6691-2377, Kariuki, Benson ORCID: https://orcid.org/0000-0002-8658-3897, Murphy, Damien Martin ORCID: https://orcid.org/0000-0002-5941-4879 and Ward, Benjamin David ORCID: https://orcid.org/0000-0003-1406-5940 2016. Copper(II) complexes of pyridine-oxazoline (Pyox) ligands: coordination chemistry, ligand stability, and catalysis. Inorganica Chimica Acta 441 , pp. 86-94. 10.1016/j.ica.2015.10.032

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Abstract

The coordination chemistry of copper(II) complexes bearing pyridine-oxazoline (“Pyox”) ligands has been studied, with an aim of investigating their catalytic ability. Interestingly, the stability of the coordinated ligands has been shown to be much less than previously assumed: hydrolysis of the ligands by fortuitous water gives rise to 2-pyridine carboxylate formation, which encapsulate the copper in a two-dimensional coordination polymer 3. The complexes [Cu(R-Pyox)(NCMe)2(ClO4)2] {R = benzyl (Bn) 2a, phenyl (Ph) 2b, isopropyl (iPr) 2c} have been prepared, of which the benzyl derivative has been analysed by CW EPR spectroscopy. The complex [Cu(Bn-Pyox)(NCMe)2(ClO4)2] and the afore-mentioned coordination polymer have been crystallographically characterised. The performance of complexes 2a–c in the asymmetric allylic oxidation of cyclohexene is described

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Additional Information:	This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
Publisher:	Elsevier
ISSN:	0020-1693
Funders:	EPSRC
Date of First Compliant Deposit:	30 March 2016
Date of Acceptance:	8 October 2015
Last Modified:	06 May 2023 11:54
URI:	https://orca.cardiff.ac.uk/id/eprint/83327

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