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Issue 81, 2015
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Bidentate nitroxide ligands stable toward oxidative redox cycling and their complexes with cerium and lanthanum

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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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Publication details

The article was received on 20 Jul 2015, accepted on 11 Aug 2015 and first published on 11 Aug 2015


Article type: Communication
DOI: 10.1039/C5CC06052D
Citation: 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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