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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/117482
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dc.contributor.authorPichon, Céline-
dc.contributor.authorRoubeau, Olivier-
dc.contributor.authorMathonière, Corine-
dc.contributor.authorClérac, Rodolphe-
dc.date.accessioned2015-07-02T10:29:07Z-
dc.date.available2015-07-02T10:29:07Z-
dc.date.issued2013-
dc.identifierdoi: 10.1021/ja407570n-
dc.identifierissn: 0002-7863-
dc.identifiere-issn: 1520-5126-
dc.identifier.citationJournal of the American Chemical Society 135(39): 14840-14853 (2013)-
dc.identifier.urihttp://hdl.handle.net/10261/117482-
dc.descriptionet al.-
dc.description.abstractThe spin-crossover complex [Fe(LN5)(CN)2] ·H2O (1, LN5 = 2,13-dimethyl-3,6,9-12,18- pentaazabicyclo[12.3.1]octadeca-1(18),2,12,14,16-pentaene), reported previously by Nelson et al. in 1986, was reinvestigated, and its structure determined by single crystal X-ray diffraction for the first time. The reaction between [MnIII(saltmen)(H2O)]+ and this photomagnetic linker yielded the trinuclear molecular complex [{Mn(saltmen)} 2FeHS(LN5)(CN)2](ClO 4)2·0.5CH3OH (2) and the one-dimensional compound [{Mn(saltmen)}2FeLS(LN5)(CN) 2](ClO4)2·0.5C4H 10O·0.5H2O (3) depending on the addition order of the reagents (HS: High-Spin; LS: Low-Spin). Compound 3 exhibits a wave-shaped chain structure built from the assembly of the trinuclear [Mn III-NC-FeII] motif found in 2. Static magnetic measurements revealed the existence of antiferromagnetic Mn III···FeII (FeII HS, S = 2) interactions in the trinuclear entity of 2 via the cyanido bridge leading to an ST = 2 ground state. In the case of 3, concomitant ferromagnetic and antiferromagnetic exchange interactions are found along the chain due to the presence of two crystallographically independent {Mn2(saltmen) 2} units, which behave differently as shown by the magnetic susceptibility analysis, while the FeII (LS, S = 0) cyanido-bridging moiety is isolating these dinuclear MnIII units. ac susceptibility experiments indicated slow relaxation of the magnetization arising from the ferromagnetically coupled [Mn2] units (τ0 = 1.1 × 10-7 s and Δeff/kB = 13.9 K). Optical reflectivity and photomagnetic properties of 1 and 3 have been investigated in detail. These studies reveal that the photomagnetic properties of 1 are kept after its coordination to the acceptor MnIII/saltmen complexes, allowing in 3 to switch >on> and >off> the magnetic interaction between the photoinduced FeII HS unit (S = 2) and the Mn(III) ions. To the best of our knowledge, the compound 3 represents the first example of a coordination network of single-molecule magnets linked by spin-crossover units inducing thermally and photoreversible magnetic and optical properties. © 2013 American Chemical Society.-
dc.description.sponsorshipThis work was supported by the University of Bordeaux, the CNRS, the Aquitaine Région, the IUF (Institut Universitaire de France) and the ANR (NT-09_469563, AC-MAGnets project).-
dc.publisherAmerican Chemical Society-
dc.rightsclosedAccess-
dc.titleRational design of a photomagnetic chain: Bridging single-molecule magnets with a spin-crossover complex-
dc.typeartículo-
dc.identifier.doi10.1021/ja407570n-
dc.date.updated2015-07-02T10:29:07Z-
dc.description.versionPeer Reviewed-
dc.language.rfc3066eng-
dc.contributor.funderUniversité de Bordeaux-
dc.contributor.funderCentre National de la Recherche Scientifique (France)-
dc.contributor.funderConseil régional d'Aquitaine-
dc.contributor.funderInstitut Universitaire de France-
dc.contributor.funderAgence Nationale de la Recherche (France)-
dc.relation.csicSí-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100006251es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100004794es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100004795es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100001665es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100009468es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextnone-
item.openairetypeartículo-
item.fulltextNo Fulltext-
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