Redox switching of the antiferromagnetic coupling in permethylated dicopper(II) paracyclophanes

Jesús Ferrando-Soria; María Castellano; Rafael Ruiz-García; Joan Cano; Miguel Julve; Francesc Lloret; Jorge Pasán; Catalina Ruiz-Pérez; Laura Cañadillas-Delgado; Yangling Li; Yves Journaux; Emilio Pardo

doi:10.1039/C2CC33385F

Redox switching of the antiferromagnetic coupling in permethylated dicopper(ii) paracyclophanes†

Jesús Ferrando-Soria,^a María Castellano,^a Rafael Ruiz-García,^ab Joan Cano,^ab Miguel Julve,^a Francesc Lloret,*^a Jorge Pasán,^c Catalina Ruiz-Pérez,^c Laura Cañadillas-Delgado,^cd Yangling Li,^ef Yves Journaux^ef and Emilio Pardo*^a

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* Corresponding authors

^a Instituto de Ciencia Molecular (ICMol), Universitat de València, València, Spain
E-mail: emilio.pardo@uv.es, francisco.lloret@uv.es

^b Fundació General de la Universitat de València (FGUV), Spain

^c Laboratorio de Rayos X y Materiales Moleculares, Departamento de Física Fundamental II, Facultad de Física, Universidad de La Laguna, Tenerife, Spain

^d Institut Laue Langevin, 38042 Grenoble, France

^e Institut Parisien de Chimie Moléculaire, UPMC Univ Paris 06, 75252 Paris, France

^f CNRS, UMR 7201, France

Abstract

A unique magnetic electroswitching behavior has been observed in an oxamato-based permethylated dicopper(II) paracyclophane; upon reversible one-electron oxidation of the double tetramethyl-substituted p-phenylenediamidate bridging skeleton, the spin alignment of the two Cu^II ions (S_Cu = ½) changes from antiparallel (OFF) to parallel (ON) in the resulting dicopper(II) π-radical cation species.

Chemical Communications

Redox switching of the antiferromagnetic coupling in permethylated dicopper(ii) paracyclophanes†

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Redox switching of the antiferromagnetic coupling in permethylated dicopper(II) paracyclophanes

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