Browsing by Author "Zabala-Lekuona, Andoni"
Now showing items 1-15 of 15
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2D-Coordination polymers based on 1H-indazole-4-carboxylic acid and transition metal ions: magnetic, luminescence and biological properties
García Valdivia, Antonio A.; Zabala Lekuona, Andoni; Ramírez Rodríguez, Gloria B.; Delgado López, José M.; Fernández, Belén; Cepeda Ruiz, Javier; Rodríguez Diéguez, Antonio (Royal Society of Chemistry, 2020-08-14)We report the formation of five novel multifunctional coordination polymers based on 1H-indazole-4-carboxylic acid (HL). To the best of our knowledge, these complexes are the first examples of coordination compounds ... -
A Luminescent MOF Based on Pyrimidine-4,6-dicarboxylate Ligand and Lead(II) with Unprecedented Topology
Razquin Bobillo, Laura; Pajuelo Corral, Oier; Zabala Lekuona, Andoni; Vitorica Yrezabal, Iñigo J; García Martínez, José Angel; Moreno, Jose M.; Rodríguez-Diéguez, Antonio; Cepeda Ruiz, Javier (MDPI, 2023-10-13)In the present work, we report on a 3D MOF of {[Pb5(μ3-OH)(μ3-NO3)3(μ6-pmdc)3]·H2O}n formula (pmdc = pyrimidine-4,6-dicarboxylate) synthesized by an oven-heated, solvent-free procedure. The large connectivity afforded by ... -
A metal-organic framework based on Co(II) and 3-aminoisonicotinate showing specific and reversible colourimetric response to solvent exchange with variable magnet behaviour
Pajuelo Corral, Oier; Pérez Yáñez, Sonia ; Vitorica Yrezabal, Iñigo J.; Beobide Pacheco, Garikoitz ; Zabala Lekuona, Andoni; Rodríguez Diéguez, Antonio; Seco Botana, José Manuel ; Cepeda Ruiz, Javier (Elsevier, 2022-06)[EN] A versatile metal-organic system consisting of Co-based compounds that show reversible transformations between a 3D metal-organic framework (MOF) of {[Co(mu-3isoani)(2)]center dot DMF}(n) (1) formula (where 3isoani - ... -
An experimental and theoretical study of the magnetic relaxation in heterometallic coordination polymers based on 6-methyl-2-oxonicotinate and lanthanide(III) ions with square antriprismatic environment
Razquin Bobillo, Laura; Pajuelo Corral, Oier; Zabala Lekuona, Andoni; Rodríguez Diéguez, Antonio; Cepeda Ruiz, Javier (2022-10-03)Two new isostructural compounds based on 6-methyl-2-oxonicotinate (6m2onic) ligand and sodium and lanthanide(III) ions are reported. The structural and chemical characterization reveals the following chemical formula: ... -
Combined experimental and theoretical investigation on the magnetic properties derived from the coordination of 6-methyl-2- oxonicotinate to 3d-metal ions
Razquin Bobillo, Laura; Pajuelo Corral, Oier; Artetxe Arretxe, Beñat; Zabala Lekuona, Andoni; Choquesillo Lazarte, Duane; Rodríguez Diéguez, Antonio; San Sebastián Larzabal, Eider ; Cepeda Ruiz, Javier (Royal Society of Chemistry, 2022-06-08)Five new compounds are reported herein starting from 2-hydroxy-6-methylnicotinic acid (H2h6mnic) and first-row transition metal ions, although H2h6mnic shows a prototropy in solution to lead to the 6-methyl-2-oxonicotinate ... -
Effect of the change of the ancillary carboxylate bridging ligand on the SMM and luminescence properties of a series of carboxylate-diphenoxido triply bridged dinuclear ZnLn and tetranuclear Zn2Ln2 complexes (Ln = Dy, Er)
Echenique Errandonea, Estitxu; Zabala Lekuona, Andoni; Cepeda Ruiz, Javier; Rodríguez Diéguez, Antonio; Seco Botana, José Manuel ; Oyarzabal Epelde, Itziar; Colacio Rodríguez, Enrique Emilio (Royal Society of Chemistry, 2018-11-22)Eleven new dinuclear and tetranuclear compounds of general formulae [Zn(μ-L)(μ-X)Ln(NO3)2]·nS, [Zn2Dy2(μ3-L′)2(μ-sal)2(NO3)(CH3OH)](NO3)·5CH3OH and [Zn2Er2(μ3-L′)2(μ-sal)2(CH3OH)2](NO3)2·4CH3OH (X = benzoate, anthracenate, ... -
Iman Molekularrak: informazio unitate txikienaren bila
Zabala Lekuona, Andoni (Servicio Editorial de la Universidad del País Vasco/Euskal Herriko Unibertsitatearen Argitalpen Zerbitzua, 2019)Nowadays, storing the highest possible amount of information in size re-duced devices is one of important concerns of society. Even though this kind of tech-nology is quite developed, the discovery of the Mn12-ac coordination ... -
Influence of Thermally-Induced Structural Transformations over Magnetic and Luminiscence Properties of Tartrate-based Chiral Lanthanide Organic-Frameworks
Huizi Rayo, Uxua; Zabala Lekuona, Andoni; Terenzi, Alessio; Cruz, Carlos M.; Cuerva, Juan M.; Rodríguez Diéguez, Antonio; García Martínez, José Angel; Seco Botana, José Manuel ; San Sebastián Larzabal, Eider ; Cepeda Ruiz, Javier (RSC, 2020-05-04)This work reports on the synthesis and characterization of five enantiomeric pairs of isostructural 3D metal-organic frameworks (MOFs) with the general formula {[Ln2(μ4-tar)2(μ-tar)(H2O)2]·xH2O}n [where Ln(III) = Tb (Tb-L ... -
Magnetic and Luminescent Properties of Isostructural 2D Coordination Polymers Based on 2-Pyrimidinecarboxylate and Lanthanide Ions
García García, Amalia; Zabala Lekuona, Andoni; Goñi Cárdenas, Ainhoa; Cepeda Ruiz, Javier; Seco Botana, José Manuel ; Salinas-Castillo, Alfonso; Choquesillo Lazarte, Duane; Rodríguez-Diéguez, Antonio (MDPI, 2020-07-02)A couple of isostructural coordination polymers with the general formula [Ln4(pymca)4(AcO)8]n have been obtained from reactions between pyrimidine-2-carboxylate (pymca) ligand and rare-earth ions (Ln = Dy (1), Nd (2)). ... -
Magneto-thermal properties and slow magnetic relaxation in Mn(II)Ln(III) complexes: Influence of magnetic coupling on the magneto-caloric effect
Oyarzabal Epelde, Itziar; Zabala Lekuona, Andoni; Mota Ávila, Antonio José; Palacios, María A.; Rodríguez Diéguez, Antonio; Lorusso, Giulia; Evangelisti, Marco; Rodríguez-Esteban, Corina; Brechin, Euan K.; Seco Botana, José Manuel ; Colacio Rodríguez, Enrique Emilio (2022-08-05)A family of Mn(II)Ln(III) dinuclear and tetranuclear complexes (Ln = Gd and Dy) has been prepared from the compartmental ligands N,N’-dimethyl-N,N’-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylenediamine (H2L1 ) and ... -
Single-Molecule Magnets: From Mn12-ac to dysprosium metallocenes, a travel in time
Zabala Lekuona, Andoni; Seco Botana, José Manuel ; Colacio Rodríguez, Enrique Emilio (Elsevier, 2021-05-07)The discovery of the first Single-Molecule Magnet, Mn12-ac, in 1993 changed the perspective of how information can be stored. The current bit, occupying few hundreds of nanometers in present devices, would be minimized ... -
Spin canting and slow magnetic relaxation in mononuclear cobalt(ii) sulfadiazine ternary complexes
Villa Pérez, Cristian; Zabala Lekuona, Andoni; Vitorica Yrezabal, Iñigo J.; Seco Botana, José Manuel ; Cepeda Ruiz, Javier; Echeverria, Gustavo; Soria, Delia Beatriz (RSC, 2024-01)Monomeric [Co(SDZ)2phen] (1) and [Co(SDZ)(bq)Cl] (2) complexes (SDZ = sulfadiazine, phen = 1,10-phenanthroline, and bq = 2,2′-biquinoline) have been synthesized and characterized. X-ray diffraction studies indicate that ... -
Transition metal, lanthanide and mixed 3d-4f based compounds based on Mannich base ligands: a progressive magnetic study towards improved materials
Zabala Lekuona, Andoni (2021-06-11)Esta tesis se sitúa en el ámbito del magnetismo molecular. Más específicamente, se ha estudiado un gran número de compuestos de coordinación basados en metales de transición, lantánidos y mixtos 3d-4f con interesantes ... -
Zero-Field SMM Behavior Triggered by Magnetic Exchange Interactions and a Collinear Arrangement of Local Anisotropy Axes in a Linear Co3 II Complex
Zabala Lekuona, Andoni; Landart Gereka, Aritz; Quesada Moreno, María Mar; Mota Ávila, Antonio José; Díaz Ortega, Ismael F.; Nojiri, Hyroyuki; Krzystek, Jurek; Seco Botana, José Manuel ; Colacio, Enrique (ACS, 2023-11-22)A new linear trinuclear Co(II)3 complex with a formula of [{Co(μ-L)}2Co] has been prepared by self-assembly of Co(II) ions and the N3O3-tripodal Schiff base ligand H3L, which is obtained from the condensation of ... -
Zn2+ eta Dy3+ ioietan oinarritutako SMM baten erlaxazio-denboren azterketa Ln3+ matrize ezberdinak erabiliz
Teixeira Esteban, Markel (2023-10-09)Lan honen helburua, [Zn2(μ-H2L)2(μ-sukzinato)Dy2(NO3)2](NO3)2·2H2O·6MeOH (Dy) koordinazio-konposatuak duen iman molekular portaera hobetzea da. Horretarako, Eu3+ (1-EuDy), Gd3+ (2-GdDy), Ho3+ (3-HoDy), Tm3+ (4-TmDy) eta ...