Issue 81, 2015
From the journal:

Chemical Communications

Bidentate nitroxide ligands stable toward oxidative redox cycling and their complexes with cerium and lanthanum†

Jee Eon Kim, ORCID logo a   Patrick J. Carrolla  and  Eric J. Schelter*a  

* Corresponding authors

a P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
E-mail: schelter@sas.upenn.edu

Abstract

We report the synthesis of 1,3-bis[(2′-tertbutyl)hydroxyaminophenyl]benzene (H2arene-diNOx) and its metal complexes, Ce(arene-diNOx)2 (1) and [(py)2K(18-crown-6)][La(arene-diNOx)2] (2). Electrochemical studies demonstrated that the H2arene-diNOx, bidentate nitroxide ligands significantly stabilized the CeIV/III redox couple to −1.74 V versus Fc/Fc+. Moreover, a reversible oxidation wave was observed for 1 at −0.37 V, leading to a novel, stable redox-active nitroxide ligand. DFT calculations confirmed that the observed oxidation is assignable to one of the nitroxide groups.

Graphical abstract: Bidentate nitroxide ligands stable toward oxidative redox cycling and their complexes with cerium and lanthanum

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Article information

DOI
https://doi.org/10.1039/C5CC06052D
Article type
Communication
Submitted
20 Jul 2015
Accepted
11 Aug 2015
First published
11 Aug 2015

Chem. Commun., 2015,51, 15047-15050

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Bidentate nitroxide ligands stable toward oxidative redox cycling and their complexes with cerium and lanthanum

J. E. Kim, P. J. Carroll and E. J. Schelter, Chem. Commun., 2015, 51, 15047 DOI: 10.1039/C5CC06052D

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