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Metal−Organic Frameworks as Playgrounds for Reticulate Single-Molecule Magnets

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Metal−Organic Frameworks as Playgrounds for Reticulate Single-Molecule Magnets

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dc.contributor.author	Kalinke, Lucas H. G.
dc.contributor.author	Cangussu, Danielle
dc.contributor.author	Mon Conejero, Marta
dc.contributor.author	Bruno, Rosaria
dc.contributor.author	Tiburcio, Estefanía
dc.contributor.author	Lloret Pastor, Francisco
dc.contributor.author	Armentano, Donatella
dc.contributor.author	Pardo Marín, Emilio
dc.contributor.author	Ferrando Soria, Jesús
dc.date.accessioned	2019-12-04T14:09:45Z
dc.date.available	2020-10-17T04:45:05Z
dc.date.issued	2019
dc.identifier.citation	Kalinke, Lucas H. G. Cangussu, Danielle Mon Conejero, Marta Bruno, Rosaria Tiburcio, Estefanía Lloret Pastor, Francisco Armentano, Donatella Pardo Marín, Emilio Ferrando Soria, Jesús 2019 Metal−Organic Frameworks as Playgrounds for Reticulate Single-Molecule Magnets Inorganic Chemistry 58 14498 14506
dc.identifier.uri	https://hdl.handle.net/10550/72381
dc.description.abstract	Achieving an accurate control on the final structure of Metal-Organic Frameworks (MOFs) is mandatory to obtain target physical properties. Here we describe how the combination of a metalloligand design strategy and a post-synthetic method is a versatile and powerful approach to success on this extremely difficult task. In a first stage, a novel oxamato-based tetranuclear cobalt(III) complex with a tetrahedron-shape geometry is used, for the first time, as metalloligand toward cal-cium(II) cations to lead a diamagnetic Ca(II)-Co(III) three-dimensional (3D) MOF (1). In a second stage, in a single-crystal to single-crystal manner the calcium(II) ions are replaced by terbium (III), dysprosium(III), holmium(III) and erbium(III) ones to yield four isostructural novel Ln(III)-Co(III) [Ln = Tb (2), Dy (3), Ho (4) and Er (5)] 3D MOFs. The direct-current (dc) magnetic properties for 2-5 reveal behaviors as expected for the ground terms of the magnetic isolated rare-earth ions [7F6 (TbIII), 6H15/2 (DyIII), 5I8 (HoIII) and 4I15/2 (ErIII)]. The analysis of the χMT data indicates that the lowest MJ value is the ground state, that is MJ = 0 (2 and 4) and 1/2 (3 and 5). Incipient frequency-dependent alternating current magnetic susceptibility signals are observed for the Kramers' ions (3 and 5) under an external applied magnetics field, supporting the presence of slow magnetic relaxation typical of single-molecule magnets.
dc.language.iso	eng
dc.relation.ispartof	Inorganic Chemistry, 2019, vol. 58, p. 14498-14506
dc.subject	Química organometàl·lica
dc.title	Metal−Organic Frameworks as Playgrounds for Reticulate Single-Molecule Magnets
dc.type	journal article	es_ES
dc.date.updated	2019-12-04T14:09:45Z
dc.identifier.doi	10.1021/acs.inorgchem.9b02086
dc.identifier.idgrec	135290
dc.rights.accessRights	open access	es_ES