0000000000408211
AUTHOR
J. Alberto Rodríguez-velamazán
showing 17 related works from this author
The Role of Order-Disorder Transitions in the Quest for Molecular Multiferroics: Structural and Magnetic Neutron Studies of a Mixed Valence Iron (II)…
2012
Neutron diffraction studies have been carried out to shed light on the unprecedented order-disorder phase transition (ca. 155 K) observed in the mixed-valence iron(II)-iron(III) formate framework compound [NH 2(CH3)2]n[FeIIIFe II(HCOO)6]n. The crystal structure at 220 K was first determined from Laue diffraction data, then a second refinement at 175 K and the crystal structure determination in the low temperature phase at 45 K were done with data from the monochromatic high resolution single crystal diffractometer D19. The 45 K nuclear structure reveals that the phase transition is associated with the order-disorder of the dimethylammonium counterion that is weakly anchored in the cavities …
A Switchable Molecular Rotator: Neutron Spectroscopy Study on a Polymeric Spin-Crossover Compound
2012
A quasielastic neutron scattering and solid-state 2H NMR spectroscopy study of the polymeric spin-crossover compound {Fe(pyrazine)[Pt(CN) 4]} shows that the switching of the rotation of a molecular fragment-the pyrazine ligand-occurs in association with the change of spin state. The rotation switching was examined on a wide time scale (10 -13-10 -3 s) by both techniques, which clearly demonstrated the combination between molecular rotation and spin-crossover transition under external stimuli (temperature and chemical). The pyrazine rings are seen to perform a 4-fold jump motion about the coordinating nitrogen axis in the high-spin state. In the low-spin state, however, the motion is suppres…
Synthesis of a novel zeolite through a pressure-induced reconstructive phase transition process
2013
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Long-range magnetic order in the porous metal–organic framework Ni(pyrazine)[Pt(CN)4]
2017
A combined study involving DFT calculations, neutron scattering, heat capacity and magnetic measurements at very low temperatures demonstrates the long-range magnetic ordering of Ni(pyrazine)[Pt(CN)4] below 1.9 K, describing its antiferromagnetic spin arrangement. This compound belongs to the family of porous coordination polymers M(pyrazine)[Pt(CN)4] (M = divalent metal), renowned for showing interesting combinations of porosity and magnetic properties. The possibility of including long-range magnetic ordering, one of the most pursued functional properties, opens new perspectives for the multifunctionality of this class of compounds.
Heterobimetallic MOFs containing tetrathiocyanometallate building blocks: Pressure-induced spin crossover in the porous {Fe II(pz)[Pd II(SCN) 4]} 3D …
2012
Here we describe the synthesis, structure, and magnetic properties of two related coordination polymers made up of self-assembling Fe(II) ions, pyrazine (pz), and the tetrathiocyanopalladate anion. Compound {Fe(MeOH) 2[Pd(SCN) 4]}·pz (1a) is a two-dimensional coordination polymer where the Fe(II) ions are equatorially coordinated by the nitrogen atoms of four [Pd(SCN) 4] 2- anions, each of which connects four Fe(II) ions, forming corrugated layers {Fe[Pd(SCN) 4]} ∞. The coordination sphere of Fe(II) is completed by the oxygen atoms of two CH 3OH molecules. The layers stack one on top of each other in such a way that the included pz molecule establishes strong hydrogen bonds with the coordin…
Gas confinement in compartmentalized coordination polymers for highly selective sorption
2016
Discrimination between different gases is an essential aspect for industrial and environmental applications involving sensing and separation. Several classes of porous materials have been used in this context, including zeolites and more recently MOFs. However, to reach high selectivities for the separation of gas mixtures is a challenging task that often requires the understanding of the specific interactions established between the porous framework and the gases. Here we propose an approach to obtain an enhanced selectivity based on the use of compartmentalized coordination polymers, named CCP-1 and CCP-2, which are crystalline materials comprising isolated discrete cavities. These compar…
CCDC 1473649: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 1473650: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 1439097: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 945084: Experimental Crystal Structure Determination
2013
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 1439096: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 1473651: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 1473652: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 945083: Experimental Crystal Structure Determination
2013
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 945082: Experimental Crystal Structure Determination
2013
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 1473654: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G
CCDC 1473653: Experimental Crystal Structure Determination
2017
Related Article: Mónica Giménez-Marqués, Néstor Calvo Galve, Miguel Palomino, Susana Valencia, Fernando Rey, Germán Sastre, Iñigo J. Vitórica-Yrezábal, Mónica Jiménez-Ruiz, J. Alberto Rodríguez-Velamazán, Miguel A. González, José L. Jordá, Eugenio Coronado, Guillermo Mínguez Espallargas|2017|Chemical Science|8|3109|doi:10.1039/C6SC05122G