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Three new europium(III) methanetriacetate metal-organic frameworks: the influence of synthesis on the product topology

AutorCañadillas-Delgado, Laura; Fabelo, Óscar; Pasán, Jorge; Déniz, Mariadel; Martínez-Benito, Carla; Díaz-Gallifa, Pau; Martín, Tomás ; Ruiz-Pérez, Catalina
Palabras claveTopology
Metal-organic frameworks
Polymorphism
Fecha de publicación2014
EditorInternational Union of Crystallography
CitaciónActa Crystallographica - Section B - Structural Science 70(1): 19-27 (2014)
ResumenThree new metal-organic framework structures containing EuIII and the little explored methanetriacetate (C7H7O6 3-, mta 3-) ligand have been synthesized. Gel synthesis yields a two-dimensional framework with the formula [Eu(mta)(H2O)3] n ·2nH2O, (I), while two polymorphs of the three-dimensional framework material [Eu(mta)(H2O)] n ·nH2O, (II) and (III), are obtained through hydrothermal synthesis at either 423 or 443 K. Compounds (I) and (II) are isomorphous with previously reported GdIII compounds, but compound (III) constitutes a new phase. Compound (I) can be described in terms of dinuclear [Eu2(H2O)4]6+ units bonded through mta3- ligands to form a two-dimensional framework with topology corresponding to a (6,3)-connected binodal (4 3)(466683)-kgd net, where the dinuclear [Eu2(H2O)4]6+ units are considered as a single node. Compounds (II) and (III) have distinct three-dimensional topologies, namely a (41263)(4966)-nia net for (II) and a (41065)(41164)-K2O2; 36641 net for (III). The crystal density of (III) is greater than that of (II), consistent with the increase of temperature, and thereby autogeneous pressure, in the hydrothermal synthesis. © 2014 International Union of Crystallography.
Versión del editorhttp://dx.doi.org/10.1107/S2052520613034550
URIhttp://hdl.handle.net/10261/121027
DOI10.1107/S2052520613034550
Identificadoresdoi: 10.1107/S2052520613034550
issn: 2052-5192
e-issn: 2052-5206
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