title: Dicopper(II) anthraquinophanes as multielectron reservoirs for oxidation and reduction: a joint experimental and theoretical study.
abstract: Two new dinuclear copper(II) metallacyclophanes with 1,4-disubstituted 9,10-anthraquinonebis(oxamate) bridging ligands are reported that can reversibly take and release electrons at the redox-active ligand and metal sites, respectively, to give the corresponding mono- and bis(semiquinonate and/or catecholate) Cu(II)2 species and mixed-valent Cu(II)/Cu(III) and high-valent Cu(III)2 ones. Density functional calculations allow us to give further insights on the dual ligand- and metal-based character of the redox processes in this novel family of antiferromagnetically coupled di- copper(II) anthraquinophanes. This unique ability for charge storage could be the basis for the development of new kinds of molecular spintronic devices, referred to as molecular magnetic capacitors (MMCs).
authors.affiliation: Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain).
authors.forename: María
authors.initials: M
authors.lastname: Castellano
authors.forename: Wdeson P
authors.initials: WP
authors.lastname: Barros
authors.forename: Alvaro
authors.initials: A
authors.lastname: Acosta
authors.forename: Miguel
authors.initials: M
authors.lastname: Julve
authors.forename: Francesc
authors.initials: F
authors.lastname: Lloret
authors.forename: Yanling
authors.initials: Y
authors.lastname: Li
authors.forename: Yves
authors.initials: Y
authors.lastname: Journaux
authors.forename: Giovanni
authors.initials: G
authors.lastname: De Munno
authors.forename: Donatella
authors.initials: D
authors.lastname: Armentano
authors.forename: Rafael
authors.initials: R
authors.lastname: Ruiz-García
authors.forename: Joan
authors.initials: J
authors.lastname: Cano
mesh_terms: D000880:Anthraquinones / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D004583:Electrons; D008958:Models, Molecular; D010084:Oxidation-Reduction
chemical_list: D000880:Anthraquinones; C042834:9,10-anthraquinone; D003300:Copper
keywords: copper; density functional calculations; magnetic properties; quinones; redox properties