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dc.contributor.authorSce, Fabio
dc.contributor.authorGonzález Izquierdo, Palmerina
dc.contributor.authorCano Rico, Israel
dc.contributor.authorBeobide, Garikoitz
dc.contributor.authorFabelo, Óscar
dc.contributor.authorVieira, Bruno J.C.
dc.contributor.authorWaerenborgh, Joao C.
dc.contributor.authorVallcorba, Oriol
dc.contributor.authorCastillo, Óscar
dc.contributor.authorPedro del Valle, Imanol de 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.description.abstractA thorough characterization of the title compound, (dimim)2[Fe2Cl6(µ-O)], consisting of a (µ-oxido)-bridged binuclear iron(III) complex and 1,3-dimethylimiazolium (dimim) cation, has been performed using a wide range of techniques. The room temperature disordered crystal structure of this compound transits to an incommensurately modulated crystal structure at 100 K; to our knowledge, the first one found for an imidazolium halometallate complex. The crystal structure was solved in the superspace group PĪ(/α/β/γ)0 with modulation vector q=0.1370(10) 0.0982(10) 0.326(2) at 100 K. Variable temperature synchrotron powder x-ray diffraction showed the presence of satellite peaks in addition to the main diffraction peaks up to 208 K. Furthermore, a thermal expansion study was performed with this technique from 100 to 383 K (near of its melting point) adressing questions about the nature and consequences of the ion self-assembly of this (µ-oxido)-bridged binuclear iron(III) complex, as well as the molecular motion of the imidazolium cation within the crystalline structure as a response to the temperature effect. Finally, we present a deep magnetic study based on magnetic susceptibility, magnetization and Mössbauer measurements, where the strong antiferromagnetic exchange coupling detected is due to the occurrence of a µ-oxido bridge between the Fe(III), giving rise to an intra-dimeric antiferromagnetic exchange coupling of -308 cm-1.es_ES
dc.description.sponsorshipFinancial support from Universidad de Cantabria (Proyecto Puente convocatoria 2018 funded by SODERCAN_FEDER) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (GIU17/50 and PPG17/37) and Ministerio de Economia y Competividad (MAT2017-89239-C2-(1,2)-P).es_ES
dc.format.extent14 p.es_ES
dc.publisherIOP Publishinges_ES
dc.rightsAttribution 4.0 International. © 2019 The Author(s). Published by IOP Publishing Ltdes_ES
dc.sourceJournal of Physics: Materials, Volume 3, Number 1es_ES
dc.subject.otherHalometallate complexes_ES
dc.subject.otherIncommensurate crystal structurees_ES
dc.subject.otherThermal expansion studieses_ES
dc.subject.otherMagnetic propertieses_ES
dc.titleIncommensurate crystal structure, thermal expansion study and magnetic properties of (dimethylimidazolium)2[Fe2Cl6(?-O)]es_ES

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Attribution 4.0 International. © 2019 The Author(s). Published by IOP Publishing LtdExcept where otherwise noted, this item's license is described as Attribution 4.0 International. © 2019 The Author(s). Published by IOP Publishing Ltd