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Echenique-Errandonea E, Rojas S, Ortuño AM, Cepeda J, Ramos-Cabrer P, Vitórica-Yrezábal ÍJ, Cuerva JM, Seco JM, Rodríguez-Diéguez A. Multifunctional Amino Acid Derivative Coordination Compounds: Novel Contrast Agent and Luminescence Materials. Chemistry 2024; 30:e202304146. [PMID: 38687127 DOI: 10.1002/chem.202304146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Indexed: 05/02/2024]
Abstract
In this work a family of multidimensional (2-(1H-tetrazol-5-yl)ethyl) amino acid coordination compounds have been synthesized and thoroughly characterized. For this purpose, glycine, valine, phenylalanine and tyrosine have been selected as starting amino acids and Mn2+, Zn2+ and Cd2+ as metallic nodes. From one side, for Mn2+ based dimer magnetic resonance imaging studies have been conducted, prompted by the number and disposition of the coordinated water molecules and taking into consideration the promising future of manganese-based coordination compounds as bio-compatible substitutes to conventional Gd based contrast agents. From another side, d10 block metal-based complexes allowed exploring photoluminescence properties derived by in situ synthesized ligands. Finally, amino acid preserved structural chirality allowed us to examine chiroptical properties, particularly focusing on circularly polarized luminescence.
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Affiliation(s)
- Estitxu Echenique-Errandonea
- Department of Applied Chemistry, Faculty of Chemistry, University of Basque Country/Euskal Herriko Unibertsitatea (UPV/EHU), 20018, Donostia, Spain
| | - Sara Rojas
- Department of Inorganic Chemistry, University of Granada, C/ Severo Ochoa s/n, 18071, Granada, Spain
| | - Ana M Ortuño
- Department of Inorganic Chemistry, University of Granada, C/ Severo Ochoa s/n, 18071, Granada, Spain
| | - Javier Cepeda
- Department of Applied Chemistry, Faculty of Chemistry, University of Basque Country/Euskal Herriko Unibertsitatea (UPV/EHU), 20018, Donostia, Spain
| | - Pedro Ramos-Cabrer
- Magnetic Resonance Imaging Laboratory, CIC biomaGUNE, 20014, Donostia-San Sebastián, Spain
| | - Íñigo J Vitórica-Yrezábal
- Department of Inorganic Chemistry, University of Granada, C/ Severo Ochoa s/n, 18071, Granada, Spain
| | - Juan M Cuerva
- Department of Inorganic Chemistry, University of Granada, C/ Severo Ochoa s/n, 18071, Granada, Spain
| | - José M Seco
- Department of Applied Chemistry, Faculty of Chemistry, University of Basque Country/Euskal Herriko Unibertsitatea (UPV/EHU), 20018, Donostia, Spain
| | - Antonio Rodríguez-Diéguez
- Department of Inorganic Chemistry, University of Granada, C/ Severo Ochoa s/n, 18071, Granada, Spain
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2
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Zabala-Lekuona A, Lopez de Pariza X, Díaz-Ortega IF, Cepeda J, Nojiri H, Gritsan NP, Dmitriev AA, López-Ortega A, Rodríguez-Diéguez A, Seco JM, Colacio E. From field-induced to zero-field SMMs associated with open/closed structures of bis(ZnDy) tetranuclear complexes: a combined magnetic, theoretical and optical study. Dalton Trans 2024; 53:7971-7984. [PMID: 38647324 DOI: 10.1039/d4dt00148f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
We have prepared a bis(compartmental) Mannich base ligand H4L (1,4,8,11-tetraaza-1,4,8,11-tetrakis(2-hydroxy-3-methoxy-5-methylbenzyl)cyclotetradecane) specifically designed to obtain bis(TMIILnIII) tetranuclear complexes (TM = transition metal). In this regard, we have succeeded in obtaining three new complexes of the formula [Zn2(μ-L)(μ-OAc)Dy2(NO3)2]·[Zn2(μ-L)(μ-OAc)Dy2(NO3)(OAc)]·4CHCl3·2MeOH (1) and [TM2(μ-H2L)2(μ-succinate)Ln2(NO3)2] (NO3)2·2H2O·6MeOH (TMII = Zn, LnIII = Dy (2); TMII = Co, LnIII = Dy (3)). Compound 1 contains two different bis(ZnDy) tetranuclear molecules that cocrystallize in the structure, in which acetato bridging ligands connect the ZnII and DyIII ions within each ZnDy subunit. This compound does not exhibit slow magnetic relaxation at zero field, but it is activated in the presence of an applied dc magnetic field and/or by Dy/Y magnetic dilution, showing two relaxation processes corresponding to each of the two different bis(ZnDy) units found in the structure. As revealed by the theoretical calculations, magnetic relaxation in 1 is single-ion in origin and takes place through the first excited state of each DyIII ion. When using the succinato dicarboxylate bridging ligand instead of acetate, compounds 2 and 3 were serendipitously formed, which have a closed structure with the succinate anion bridging two ZnDy subunits belonging to two different ligands. It should be noted that only compound 2 exhibits slow relaxation of magnetization in the absence of an external magnetic field. According to experimental and theoretical data, 2 relaxes through the second excited Kramers doublet (Ueff = 342 K). In contrast, 3 displays field-induced SMM behaviour (Ueff = 203 K). However, the Co/Zn diluted version of this compound 3Zn shows slow relaxation at zero field (Ueff = 347 K). Ab initio theoretical calculations clearly show that the weak ferromagnetic coupling between CoII and DyIII ions is at the origin of the lack of slow relaxation of this compound at zero field. Compound 2 and its diluted analogues 2Y and 3Zn show hysteresis loops at very low temperature, thus confirming their SMM behaviour. Finally, compounds 1 and 2 show DyIII based emission even at room temperature that, in the case of 2, allows us to extract the splitting of the ground 6H15/2 term, which matches reasonably well with theoretical calculations.
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Affiliation(s)
- Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Xabier Lopez de Pariza
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Ismael F Díaz-Ortega
- Departamento de Química y Física-CIESOL, Universidad de Almería, Ctra. Sacramento s/n, 04120 Almería, Spain
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Javier Cepeda
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Nina P Gritsan
- Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alexey A Dmitriev
- Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alberto López-Ortega
- Departamento de Ciencias, Universidad Pública de Navarra, E-31006 Pamplona, Spain
- Institute for Advanced Materials and Mathematics (INAMAT2), Universidad Pública de Navarra, E-31006 Pamplona, Spain
- CIC nanoGUNE BRTA, Tolosa Hiribidea 76, Donostia-San Sebastian, 20018, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
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Fernández-Fariña S, Maneiro M, Zaragoza G, Seco JM, Pedrido R, González-Noya AM. Nickel, copper, and zinc dinuclear helicates: how do bulky groups influence their architecture? Dalton Trans 2024; 53:5676-5685. [PMID: 38445308 DOI: 10.1039/d4dt00279b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
The ligand design factors that may influence the isolation of metallosupramolecular helicates or mesocates still deserve to be investigated. In this sense, dinuclear nickel(II), copper(II) and zinc(II) compounds were obtained by electrochemical synthesis using a family of five Schiff base ligands, H2Ln (n = 1-5), derived from bisphenylmethane and functionalized with bulky tert-butyl groups in the periphery and ethyl groups in the spacer. Six of the new complexes were characterized by X-ray crystallography, thus demonstrating that the helicate structure is predominant in the solid state. 1H NMR studies were performed for the zinc complexes to analyze if the helical architecture of the metal complexes is retained in solution. These studies reveal that the presence of a tert-butyl group in the ortho position with respect to the OH group is an essential factor identified for the existence of a helicate conformation in solution.
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Affiliation(s)
- Sandra Fernández-Fariña
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, E-27002, Lugo, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, E-27002, Lugo, Spain
| | - Guillermo Zaragoza
- Unidade de Difracción de Raios X, Edificio CACTUS, Universidade de Santiago de Compostela, Campus Sur, Santiago de Compostela, Galicia, E-15782, Spain
| | - José M Seco
- Departamento de Química Orgánica Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia, E-15782, Spain
| | - Rosa Pedrido
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia, E-15782, Spain.
| | - Ana M González-Noya
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia, E-15782, Spain.
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Zabala-Lekuona A, Landart-Gereka A, Quesada-Moreno MM, Mota AJ, Díaz-Ortega IF, Nojiri H, Krzystek J, Seco JM, Colacio E. Zero-Field SMM Behavior Triggered by Magnetic Exchange Interactions and a Collinear Arrangement of Local Anisotropy Axes in a Linear Co 3II Complex. Inorg Chem 2023. [PMID: 37991724 DOI: 10.1021/acs.inorgchem.3c02817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
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 1,1,1-tris(aminomethyl)ethane and salicylaldehyde. Single X-ray diffraction shows that this compound is centrosymmetric with triple-phenolate bridging groups connecting neighboring Co(II) ions, leading to a paddle-wheel-like structure with a pseudo-C3 axis lying in the Co-Co-Co direction. The Co(II) ions at both ends of the Co(II)3 molecule exhibit distorted trigonal prismatic CoN3O3 geometry, whereas the Co(II) at the middle presents an elongated trigonal antiprismatic CoO6 geometry. The combined analysis of the magnetic data and theoretical calculations reveal strong easy-axis magnetic anisotropy for both types of Co(II) ions (|D| values higher than 115 cm-1) with the local anisotropic axes lying on the pseudo-C3 axis of the molecule. The magnetic exchange interaction between the middle and ends Co(II) ions, extracted by using either a Hamiltonian accounting for the isotropic magnetic coupling and ZFS or the Lines' model, was found to be medium to strong and antiferromagnetic in nature, whereas the interaction between the external Co(II) ions is weak antiferromagnetic. Interestingly, the compound exhibits slow relaxation of magnetization and open hysteresis at zero field and therefore SMM behavior. The significant magnetic exchange coupling found for [{Co(μ-L)}2Co] is mainly responsible for the quenching of QTM, which combined with the easy-axis local anisotropy of the CoII ions and the collinearity of their local anisotropy axes with the pseudo-C3 axis favors the observation of SMM behavior at zero field.
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Affiliation(s)
- Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Aritz Landart-Gereka
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - María Mar Quesada-Moreno
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Antonio J Mota
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Ismael F Díaz-Ortega
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Jurek Krzystek
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
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Pérez JM, Echenique‐Errandonea E, Rojas S, Choquesillo‐Lazarte D, Seco JM, López‐Vargas ME, Rodríguez‐Diéguez A, Fernández I. Improved Performance of a Europium‐based Metal‐Organic Framework for Cyanosilylation of Demanding Ketones. ChemCatChem 2022. [DOI: 10.1002/cctc.202200967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Juana M. Pérez
- Department of Chemistry and Physics Research Centre CIAIMBITAL University of Almería Ctra. Sacramento, s/n 04120 Almería Spain
| | - Estitxu Echenique‐Errandonea
- Departamento de Química Aplicada Facultad de Química Universidad del País Vasco UP/EHU Paseo Manuel Lardizabal N°3 20018 Donostia-San Sebastián Spain
| | - Sara Rojas
- Departamento de Química Inorgánica Facultad de Ciencias Universidad de Granada Av. Fuentenueva S/N 18071 Granada Spain
| | | | - José M. Seco
- Departamento de Química Aplicada Facultad de Química Universidad del País Vasco UP/EHU Paseo Manuel Lardizabal N°3 20018 Donostia-San Sebastián Spain
| | - Mireya E. López‐Vargas
- Department of Chemistry and Physics Research Centre CIAIMBITAL University of Almería Ctra. Sacramento, s/n 04120 Almería Spain
| | - Antonio Rodríguez‐Diéguez
- Departamento de Química Inorgánica Facultad de Ciencias Universidad de Granada Av. Fuentenueva S/N 18071 Granada Spain
| | - Ignacio Fernández
- Department of Chemistry and Physics Research Centre CIAIMBITAL University of Almería Ctra. Sacramento, s/n 04120 Almería Spain
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6
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Oyarzabal I, Zabala-Lekuona A, Mota AJ, Palacios MA, Rodríguez-Diéguez A, Lorusso G, Evangelisti M, Rodríguez-Esteban C, Brechin EK, Seco JM, Colacio E. Magneto-thermal properties and slow magnetic relaxation in Mn(II)Ln(III) complexes: influence of magnetic coupling on the magneto-caloric effect. Dalton Trans 2022; 51:12954-12967. [PMID: 35960153 DOI: 10.1039/d2dt01869a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
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 N,N',N''-trimethyl-N,N''-bis(2-hydroxy-3-methoxy-5-methylbenzyl)diethylenetriamine (H2L2). The Mn(II)Gd(III) complexes exhibit antiferromagnetic interactions between Mn(II) and Gd(III) ions in most cases, which are supported by Density Functional Theory (DFT) calculations. Experimental magneto-structural correlations carried out for the reported complexes and other related complexes found in bibliography show that the highest ferromagnetic coupling constants are observed in di-μ-phenoxido bridged complexes, which is due to the planarity of the Mn-(μ-O)2-Gd bridging fragment and to the high Mn-O-Gd angles. The effect of these angles has been studied by DFT calculations performed on a di-μ-phenoxido doubly bridged model. The magneto-thermal properties of the Mn(II)Gd(III) based complexes have also been measured, concluding that the magnitude of the Magneto-Caloric Effect (MCE) is due to the strength rather than to the nature of the magnetic coupling. Moreover, when two Mn(II)Gd(III) dinuclear units are connected by two carbonato-bridging ligands the MCE is enhanced, obtaining a maximum magnetic entropy change of 36.4 Jkg-1 K-1 at ΔB = 7 T and T = 2.2 K. On the other hand, one of the dinuclear Mn(II)Dy(III) complexes displays Single-Molecule Magnet (SMM) behaviour with an energy barrier of 14.8 K under an applied external field of 1000 Oe.
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Affiliation(s)
- Itziar Oyarzabal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain. .,IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia, Spain.
| | - Antonio J Mota
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - María A Palacios
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - Giulia Lorusso
- CNR - Istituto per la Microelettronica e Microsistemi, Unità di Bologna, 40129 Bologna, Italy
| | - Marco Evangelisti
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain.
| | - Corina Rodríguez-Esteban
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia, Spain.
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
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Fernández-Fariña S, Martínez-Calvo M, Maneiro M, Seco JM, Zaragoza G, González-Noya AM, Pedrido R. Two Synthetic Approaches to Coinage Metal(I) Mesocates: Electrochemical versus Chemical Synthesis. Inorg Chem 2022; 61:14121-14130. [PMID: 35984909 PMCID: PMC9455603 DOI: 10.1021/acs.inorgchem.2c02243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report two different approaches to isolate neutral and cationic mesocate-type metallosupramolecular architectures derived from coinage monovalent ions. For this purpose, we use a thiocarbohydrazone ligand, H2L (1), conveniently tuned with bulky phosphine groups to stabilize the MI ions and prevent ligand crossing to achieve the selective formation of mesocates. The neutral complexes [Cu2(HL)2] (2), [Ag2(HL)2] (3), and [Au2(HL)2] (4) were prepared by an electrochemical method, while the cationic complexes [Cu2(H2L)2](PF6)2 (5), [Cu2(H2L)2](BF4)2 (6), [Ag2(H2L)2](PF6)2 (7), [Ag4(HL)2](NO3)2 (8), and [Au2(H2L)2]Cl2 (9) were obtained by using a metal salt as the precursor. All of the complexes are neutral or cationic dinuclear mesocates, except the silver nitrate derivative, which exhibits a tetranuclear cluster mesocate architecture. The crystal structures of the neutral and cationic copper(I), silver(I), and gold(I) complexes allow us to analyze the influence of synthetic methodology or the counterion role on both the micro- and macrostructures of the mesocates.
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Affiliation(s)
- Sandra Fernández-Fariña
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Miguel Martínez-Calvo
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - José M Seco
- Departamento de Química Orgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Guillermo Zaragoza
- Unidade de Difracción de Raios X, Edificio CACTUS, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ana M González-Noya
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rosa Pedrido
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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8
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Echenique-Errandonea E, Mendes RF, Figueira F, Choquesillo-Lazarte D, Beobide G, Cepeda J, Ananias D, Rodríguez-Diéguez A, Almeida Paz FA, Seco JM. Multifunctional Lanthanide-Based Metal-Organic Frameworks Derived from 3-Amino-4-hydroxybenzoate: Single-Molecule Magnet Behavior, Luminescent Properties for Thermometry, and CO 2 Adsorptive Capacity. Inorg Chem 2022; 61:12977-12990. [PMID: 35939069 PMCID: PMC9406282 DOI: 10.1021/acs.inorgchem.2c00544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Herein, we describe
and study a new family of isostructural multifunctional
metal–organic frameworks (MOFs) with the formula {[Ln5L6(OH)3(DMF)3]·5H2O}n (where (H2L) is 3-amino-4-hydroxybenzoic
acid ligand) for magnetism and photoluminescence. Interestingly, three
of the materials (Dy-, Er-, and Yb-based MOFs) present single-molecule
magnet (SMM) behavior derived from the magnetic anisotropy of the
lanthanide ions as a consequence of the adequate electronic distribution
of the coordination environment. Additionally, photoluminescence properties
of the ligand in combination with Eu and Tb counterparts were studied,
including the heterometallic Eu–Tb mixed MOF that shows potential
as ratiometric luminescent thermometers. Finally, the porous nature
of the framework allowed showing the CO2 sorption capacity. A new family of isostructural multifunctional
metal−organic
frameworks has been described and studied for magnetism and photoluminescence.
Interestingly, some materials present single-molecule magnet behavior,
and photoluminescence properties of the ligand in combination with
Eu and Tb counterparts were studied, including the heterometallic
Eu−Tb mixed MOF that shows potential as ratiometric luminescent
thermometers. Finally, the porous nature of the framework allowed
showing the CO2 sorption capacity.
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Affiliation(s)
- Estitxu Echenique-Errandonea
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, No 3, 20018 Donostia-San Sebastián, Spain
| | - Ricardo F Mendes
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Flávio Figueira
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-UGR, Av. Las Palmeras no 4, 18100 Granada, Spain
| | - Garikoitz Beobide
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Javier Cepeda
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, No 3, 20018 Donostia-San Sebastián, Spain.,Departamento de Química Orgánica e Inorgánica, Universidad del País Vasco UPV/EHU, 48940 Leioa, Spain
| | - Duarte Ananias
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain
| | - Filipe A Almeida Paz
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, No 3, 20018 Donostia-San Sebastián, Spain
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9
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Fernández-Fariña S, González-Barcia LM, Romero MJ, García-Tojal J, Maneiro M, Seco JM, Zaragoza G, Martínez-Calvo M, González-Noya AM, Pedrido R. Conversion of a double-tetranuclear cluster silver helicate into a dihelicate via a rare desulfurization process. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01308d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We show the first example of a bisthiosemicarbazone silver double-tetranuclear cluster helicate [Ag4L2]2 obtained by electrochemical synthesis which undergoes a rare desulfurization process giving rise to a cationic silver dihelicate [Ag2(H2L)2]SO4.
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Affiliation(s)
- Sandra Fernández-Fariña
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Luis M. González-Barcia
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - María J. Romero
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Javier García-Tojal
- Departamento de Química, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - José M. Seco
- Departamento de Química Orgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Guillermo Zaragoza
- Unidade de Difracción de Raios X, Edificio CACTUS, Universidade de Santiago de Compostela, Campus Vida, Santiago de Compostela, 15782, Spain
| | - Miguel Martínez-Calvo
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ana M. González-Noya
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rosa Pedrido
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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10
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Echenique-Errandonea E, Pérez JM, Rojas S, Cepeda J, Seco JM, Fernández I, Rodríguez-Diéguez A. A novel yttrium-based metal-organic framework for the efficient solvent-free catalytic synthesis of cyanohydrin silyl ethers. Dalton Trans 2021; 50:11720-11724. [PMID: 34612309 DOI: 10.1039/d1dt01953h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new porous metal-organic framework (MOF) with the chemical formula [Y5L6(OH)3(DMF)3]·5H2O (1) (where L = 3-amino-4-hydroxybenzoate) has been prepared by a solvothermal procedure. The structural characterization reveals that this material consists of a robust three-dimensional metal-organic framework (MOF) grown with clusters formed by Y(iii) and hydroxide anions joined to one another by the ligand, giving rise to an open structure with interconnected microchannels with variable dimensions. This assembled set has shown to possess a fascinating catalytic activity for the cyanosilylation of a broad range of aldehydes and ketones with exceptional recyclability, a solvent-free medium, and one order of magnitude lower catalyst loading compared to all related lanthanide-based MOFs described so far in the literature.
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Affiliation(s)
- Estitxu Echenique-Errandonea
- Departamento de Química Aplicada, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, No. 3, 20018, Donostia-San Sebastián, Spain
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11
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Azpeitia S, Mendicute‐Fierro C, Huertos MA, Rodríguez‐Diéguez A, Seco JM, Mota AJ, Garralda MA. Experimental and DFT studies on Hexacoordinated acyl(alkyl)and Pentacooordinated Hydroxyalkyl(phosphinite)erhodium(III). Catalytic Hydrolysis of Ammonia Borane. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Susan Azpeitia
- Facultad de Química de San Sebastián Universidad del País Vasco (UPV/EHU) Apdo. 1072 20080 San Sebastián Spain
| | - Claudio Mendicute‐Fierro
- Facultad de Química de San Sebastián Universidad del País Vasco (UPV/EHU) Apdo. 1072 20080 San Sebastián Spain
| | - Miguel A. Huertos
- Facultad de Química de San Sebastián Universidad del País Vasco (UPV/EHU) Apdo. 1072 20080 San Sebastián Spain
- Ikerbasque Basque Foundation for Science 48011 Bilbao Spain
| | | | - José M. Seco
- Facultad de Química de San Sebastián Universidad del País Vasco (UPV/EHU) Apdo. 1072 20080 San Sebastián Spain
| | - Antonio J. Mota
- Departamento de Química Inorgánica Facultad de Ciencias Universidad de Granada 18071 Granada Spain
| | - María A. Garralda
- Facultad de Química de San Sebastián Universidad del País Vasco (UPV/EHU) Apdo. 1072 20080 San Sebastián Spain
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12
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García-García A, Echenique-Errandonea E, Cepeda J, Choquesillo-Lazarte D, Seco JM, Salinas-Castillo A, Sánchez-Moreno M, Méndez-Arriaga JM, Rodríguez-Diéguez A. Photoluminescence and in vitro cytotoxicity analysis in a novel mononuclear Zn(II) coordination compound based on bumetanide. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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García-García A, Méndez-Arriaga JM, Martín-Escolano R, Cepeda J, Gómez-Ruiz S, Salinas-Castillo A, Seco JM, Sánchez-Moreno M, Choquesillo-Lazarte D, Ruiz-Muelle AB, Fernández I, Marín C, Rodríguez-Diéguez A. In vitro evaluation of leishmanicidal properties of a new family of monodimensional coordination polymers based on diclofenac ligand. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Navas A, Jannus F, Fernández B, Cepeda J, Medina O’Donnell M, Díaz-Ruiz L, Sánchez-González C, Llopis J, Seco JM, Rufino-Palomares E, Lupiáñez JA, Gómez-Ruiz S, Quiles JL, Battino M, Choquesillo-Lazarte D, Ruiz-Muelle AB, Fernández I, Reyes-Zurita F, Rodríguez-Diéguez A. Designing Single-Molecule Magnets as Drugs with Dual Anti-Inflammatory and Anti-Diabetic Effects. Int J Mol Sci 2020; 21:ijms21093146. [PMID: 32365648 PMCID: PMC7246571 DOI: 10.3390/ijms21093146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 12/19/2022] Open
Abstract
We have designed and synthesized two novel cobalt coordination compounds using bumetanide (bum) and indomethacin (ind) therapeutic agents. The anti-inflammatory effects of cobalt metal complexes with ind and bum were assayed in lipopolysaccharide stimulated RAW 264.7 macrophages by inhibition of nitric oxide production. Firstly, we determined the cytotoxicity and the anti-inflammatory potential of the cobalt compounds and ind and bum ligands in RAW 264.7 cells. Indomethacin-based metal complex was able to inhibit the NO production up to 35% in a concentration-dependent manner without showing cytotoxicity, showing around 6–37 times more effective than indomethacin. Cell cycle analysis showed that the inhibition of NO production was accompanied by a reversion of the differentiation processes in LPS-stimulated RAW 264.7 cells, due to a decreased of cell percentage in G0/G1 phase, with the corresponding increase in the number of cells in S phase. These two materials have mononuclear structures and show slow relaxation of magnetization. Moreover, both compounds show anti-diabetic activity with low in vitro cell toxicities. The formation of metal complexes with bioactive ligands is a new and promising strategy to find new compounds with high and enhanced biochemical properties and promises to be a field of great interest.
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Affiliation(s)
- Arturo Navas
- Department of Inorganic Chemistry, C/ Severo Ochoa s/n, University of Granada, 18071 Granada, Spain;
| | - Fatin Jannus
- Department of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain; (F.J.); (L.D.-R.); (E.R.-P.); (J.A.L.)
| | - Belén Fernández
- Institute of Parasitology and Biomedicine “López-Neyra”, CSIC, Av. Conocimiento s/n, 18600 Granada, Spain
- Correspondence: (B.F.); (J.L.Q.); (F.R.-Z.); (A.R.-D.); Tel.: +349-5818-1621 (B.F.); +34-958-24-0057 (J.L.Q.); +34-958-24-3252 (F.R.-Z.); +349-5824-8524 (A.R.-D.)
| | - Javier Cepeda
- Department of Applied Chemistry, University of The Basque Country (UPV/EHU), 20018 San Sebastián, Spain; (J.C.); (J.M.S.)
| | - Marta Medina O’Donnell
- Department of Organic Chemistry, C/ Severo Ochoa s/n, University of Granada, 18071 Granada, Spain;
| | - Luis Díaz-Ruiz
- Department of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain; (F.J.); (L.D.-R.); (E.R.-P.); (J.A.L.)
| | - Cristina Sánchez-González
- Department of Physiology, University Campus of Cartuja, University of Granada, 18071 Granada, Spain; (C.S.-G.); (J.L.)
| | - Juan Llopis
- Department of Physiology, University Campus of Cartuja, University of Granada, 18071 Granada, Spain; (C.S.-G.); (J.L.)
| | - José M. Seco
- Department of Applied Chemistry, University of The Basque Country (UPV/EHU), 20018 San Sebastián, Spain; (J.C.); (J.M.S.)
| | - E. Rufino-Palomares
- Department of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain; (F.J.); (L.D.-R.); (E.R.-P.); (J.A.L.)
| | - José Antonio Lupiáñez
- Department of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain; (F.J.); (L.D.-R.); (E.R.-P.); (J.A.L.)
| | - Santiago Gómez-Ruiz
- Department of Biology and Geology, Physics and Inorganic Chemistry, Rey Juan Carlos University, Calle Tulipán s/n, 28933 Móstoles (Madrid), Spain;
| | - José Luis Quiles
- Department of Physiology. Institute of Nutrition and Food Technology “Jose Mataix”, Biomedical Research Center, Avda. Conocimiento s/n, 18100 Armilla, Spain
- Correspondence: (B.F.); (J.L.Q.); (F.R.-Z.); (A.R.-D.); Tel.: +349-5818-1621 (B.F.); +34-958-24-0057 (J.L.Q.); +34-958-24-3252 (F.R.-Z.); +349-5824-8524 (A.R.-D.)
| | - Maurizio Battino
- Department of Clinical Specialist and Odontostomatological Sciences (DISCO) -Sez. Biochemistry, Faculty of Medicine, Polytechnic University of Marche, 60131 Ancona, Italy;
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT (CSIC-UGR), Avda. de las Palmeras 4, 18100 Armilla, Spain;
| | - Ana Belén Ruiz-Muelle
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain; (A.B.R.-M.); (I.F.)
| | - Ignacio Fernández
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain; (A.B.R.-M.); (I.F.)
| | - Fernando Reyes-Zurita
- Department of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain; (F.J.); (L.D.-R.); (E.R.-P.); (J.A.L.)
- Correspondence: (B.F.); (J.L.Q.); (F.R.-Z.); (A.R.-D.); Tel.: +349-5818-1621 (B.F.); +34-958-24-0057 (J.L.Q.); +34-958-24-3252 (F.R.-Z.); +349-5824-8524 (A.R.-D.)
| | - Antonio Rodríguez-Diéguez
- Department of Inorganic Chemistry, C/ Severo Ochoa s/n, University of Granada, 18071 Granada, Spain;
- Correspondence: (B.F.); (J.L.Q.); (F.R.-Z.); (A.R.-D.); Tel.: +349-5818-1621 (B.F.); +34-958-24-0057 (J.L.Q.); +34-958-24-3252 (F.R.-Z.); +349-5824-8524 (A.R.-D.)
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15
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Echenique-Errandonea E, Zabala-Lekuona A, Cepeda J, Rodríguez-Diéguez A, Seco JM, Oyarzabal I, Colacio E. 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 Zn 2Ln 2 complexes (Ln = Dy, Er). Dalton Trans 2018; 48:190-201. [PMID: 30516203 DOI: 10.1039/c8dt03800g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
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, diclofenac, salicylate, 2,6-dihydroxybenzoate; Ln = Dy, Er; S = water, acetonitrile, methanol) were prepared from the N,N'-dimethyl-N,N'-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylenediamine compartmental ligand (H2L). Complexes 1-6 and 9-11 consist of diphenoxido-carboxylate triply bridged compounds, which differ mainly in the carboxylate bridging ligand. It should be noted that the acidic character of the salicylic acid promotes, in the presence of methanol, the methoxylation of the H2L ligand thereby yielding a hemiacetal H3L', which is able to connect the Ln(iii) ions of two ZnLn dinuclear units forming the Zn2Ln2 tetranuclear complexes 7 and 8. All compounds display SMM behaviour in the presence of an external field with effective energy barriers (Ueff) as high as 61 K. Magneto-structural data for these complexes reveal that their SMM behaviour is not only significantly affected by the type of Ln(iii) ion but also by the carboxylate bridging ligand connecting the Zn(ii) and Ln(iii) ions. Photoluminescence properties have also been accomplished, showing that the ligands are able to sensitize lanthanide centred emissions in the visible and near-infrared regions with variable capacity. Moreover, the analysis of the luminescence decay curves reveals emission lifetimes in the range of few microsecond or hundreds of nanoseconds for Dy(iii)-based or Er(iii)-based luminophores, respectively.
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Affiliation(s)
- E Echenique-Errandonea
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, no 3, 20018, Donostia-San Sebastián, Spain
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16
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Ruiz-Muelle AB, García-García A, García-Valdivia AA, Oyarzabal I, Cepeda J, Seco JM, Colacio E, Rodríguez-Diéguez A, Fernández I. Design and synthesis of a family of 1D-lanthanide-coordination polymers showing luminescence and slow relaxation of the magnetization. Dalton Trans 2018; 47:12783-12794. [PMID: 30152820 DOI: 10.1039/c8dt02592d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have designed and synthesized eight isostructural 1D coordination polymers (CPs) with the general formula {[Ln(aapc)3(DMF)]}n [where Ln(iii) = Y (2), La (3), Nd (4), Eu (5), Gd (6), Tb (7), Dy (8), Er (9); and aapc = 3-((anthraquinone-1-yl)amino)propanoate]. These CPs consist of Ln-carboxylate infinite rods in which the bulky anthraquinone scaffolds arise from it in such a way that the resulting supramolecular packing exhibits isolated 1D chains. Solution structures have been corroborated through NMR methods including PGSE and EXSY NMR studies and, due to the presence of lanthanide ions, magnetic and luminescence properties have been studied. Alternating current magnetic measurements of compound 8 show slow relaxation of the magnetization, a characteristic of single molecule magnets (SMMs). The evaluation of solid-state photophysical properties reveals that the aapc scaffold sensitizes lanthanide(iii) based emission of compounds 4-9 both in the visible and near-infrared (NIR) regions at 10 K.
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Affiliation(s)
- Ana Belén Ruiz-Muelle
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain.
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17
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San Nacianceno V, Ibarlucea L, Mendicute-Fierro C, Rodríguez-Diéguez A, Seco JM, Mota AJ, Garralda MA. Secondary Oxide Phosphines to Promote Tandem Acyl-Alkyl Coupling/Hydrogen Transfer to Afford (Hydroxyalkyl)rhodium Complexes. Theoretical and Experimental Studies. Inorg Chem 2018; 57:5307-5319. [PMID: 29659263 DOI: 10.1021/acs.inorgchem.8b00320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Acyl(σ-norbornenyl)rhodium(III) dimer [Rh(μ-Cl)(C9H6NCO)(C7H9)L]2 (1) (C7H9 = σ-norbornenyl; L = 4-picoline, isoquinoline) reacts with diphenylphosphine oxide (SPO) to undergo a one-pot reaction involving (i) cleavage of the chloride bridges and coordination of the phosphine, (ii) C-C bond coupling between acyl and norbornenyl in a 18e species, and (iii) ligand-assisted outer-sphere O(P)-to-O(C) hydrogen transfer, to afford mononuclear 16e species [RhCl{(C9H6NC(O)C7H9)(Ph2PO)H}(L)] (2) containing a quinolinyl-(norbornenylhydroxyalkyl) fragment hydrogen-bonded to a κ1- P-phosphinite ligand. Pentacoordinated 2, which adopt a distorted trigonal bipyramidal structure, are kinetic reaction products that transform into the thermodynamic favored isomers 3. Structures 3 contain an unusual weak η1-C anagostic interaction involving the rhodium atom and one carbon atom of the olefinic C-H bond of the norbornenyl substituent in the chelating quinolinyl-hydroxyalkyl moiety. Their structure can be described as pseudoctahedral, through a 5 + 1 coordination, with the anagostic interaction in a trans disposition with respect to the phosphorus atom of the phosphinite ligand. Complexes were characterized in solution by NMR spectroscopy and electrospray ionization mass spectrometry. Complex [RhCl{(C9H6NC(O)C7H9)(Ph2PO)H}(4-picoline)] (3a) was also identified by X-ray diffraction. Density functional theory calculations confirm the proposed structures by a plausible set of mechanisms that accounts for the 1 (monomer) → 2 → 3 transformation. Lowest-energy pathways involve reductive elimination of quinolinylnorbornenylketone, still coordinated in the rhodium(I) species thus formed, followed by O-to-O hydrogen transfer from κ1- P-SPO to the sp3 hybridized carbonyl group (formal alkoxide) avoiding the otherwise expected classical release of ketone. Theoretical 13C NMR studies also confirm the experimental spectral data for the considered structures.
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Affiliation(s)
- Virginia San Nacianceno
- Facultad de Química de San Sebastián , Universidad del País Vasco (UPV-EHU) , Apdo. 1072 , 20080 San Sebastián , Spain
| | - Lourdes Ibarlucea
- Facultad de Química de San Sebastián , Universidad del País Vasco (UPV-EHU) , Apdo. 1072 , 20080 San Sebastián , Spain
| | - Claudio Mendicute-Fierro
- Facultad de Química de San Sebastián , Universidad del País Vasco (UPV-EHU) , Apdo. 1072 , 20080 San Sebastián , Spain
| | | | - José M Seco
- Facultad de Química de San Sebastián , Universidad del País Vasco (UPV-EHU) , Apdo. 1072 , 20080 San Sebastián , Spain
| | - Antonio J Mota
- Facultad de Ciencias , Universidad de Granada , Avda. Fuentenueva s/n , 18002 Granada , Spain
| | - María A Garralda
- Facultad de Química de San Sebastián , Universidad del País Vasco (UPV-EHU) , Apdo. 1072 , 20080 San Sebastián , Spain
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18
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Oyarzabal I, Rodríguez-Diéguez A, Barquín M, Seco JM, Colacio E. The effect of the disposition of coordinated oxygen atoms on the magnitude of the energy barrier for magnetization reversal in a family of linear trinuclear Zn-Dy-Zn complexes with a square-antiprism DyO 8 coordination sphere. Dalton Trans 2018; 46:4278-4286. [PMID: 28280808 DOI: 10.1039/c7dt00138j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of trimetallic Zn-Dy-Zn complexes of the general formula [ZnX(μ-L)Dy(μ-L)XZn]Y·nS, where H2L is the compartmental ligand N,N'-dimethyl-N,N'-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylenediamine, X is the coligand (X = Cl, Br, I and N3), Y is the counteranion and S are the crystallization solvent molecules have been synthesized and magnetically characterized. In all these complexes, the Dy(iii) ions exhibit DyO8 coordination environments with a slightly distorted square-antiprism D4d symmetry. Due to the disposition of the oxygen atoms around the Dy(iii) ions, large easy-axis anisotropy is expected, which is responsible for the high thermal energy barriers for the reversal of the magnetization observed at zero field (in the 144-170 K range for all complexes). A preliminary correlation between the disposition of the oxygen atoms of the ligand (phenoxo and aldehyde) in the DyO8 coordination sphere and the value of Ueff has been established.
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Affiliation(s)
- Itziar Oyarzabal
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel de Lardizabal, no. 3, 20018, Donostia-San Sebastián, Spain.
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
| | - Montserrat Barquín
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel de Lardizabal, no. 3, 20018, Donostia-San Sebastián, Spain.
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel de Lardizabal, no. 3, 20018, Donostia-San Sebastián, Spain.
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
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19
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García-García A, Oyarzabal I, Cepeda J, Seco JM, García-Valdivia AA, Gómez-Ruiz S, Salinas-Castillo A, Choquesillo-Lazarte D, Rodríguez-Diéguez A. Slow relaxation of magnetization and luminescence properties of a novel dysprosium and pyrene-1,3,6,8-tetrasulfonate based MOF. NEW J CHEM 2018. [DOI: 10.1039/c7nj02935g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A novel multifunctional Dy(iii) and pyrene-1,3,6,8-tetrasulfonate based MOF displays intense PL/ SIM behaviour.
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Affiliation(s)
| | - Itziar Oyarzabal
- Department of Applied Chemistry
- University of The Basque Country (UPV/EHU)
- 20018 San Sebastián
- Spain
| | - Javier Cepeda
- Department of Applied Chemistry
- University of The Basque Country (UPV/EHU)
- 20018 San Sebastián
- Spain
| | - José M. Seco
- Department of Applied Chemistry
- University of The Basque Country (UPV/EHU)
- 20018 San Sebastián
- Spain
| | | | - Santiago Gómez-Ruiz
- Department of Biology and Geology
- Physics and Inorganic Chemistry
- Rey Juan Carlos University
- Móstoles (Madrid)
- Spain
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Zumeta I, Mendicute-Fierro C, Bustos I, Huertos MA, Rodríguez-Diéguez A, Seco JM, San Sebastian E, Garralda MA. Irida-β-ketoimines Derived from Hydrazines To Afford Metallapyrazoles or N-N Bond Cleavage: A Missing Metallacycle Disclosed by a Theoretical and Experimental Study. Inorg Chem 2016; 55:10284-10293. [PMID: 27689907 DOI: 10.1021/acs.inorgchem.6b01550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Unprecedented metallapyrazoles [IrH2{Ph2P(o-C6H4)CNNHC(o-C6H4)PPh2}] (3) and [IrHCl{Ph2P(o-C6H4)CNNHC(o-C6H4)PPh2}] (4) were obtained by the reaction of the irida-β-ketoimine [IrHCl{(PPh2(o-C6H4CO))(PPh2(o-C6H4CNNH2))H}] (2) in MeOH heated at reflux in the presence and absence of KOH, respectively. In solution, iridapyrazole 3 undergoes a dynamic process due to prototropic tautomerism with an experimental barrier for the exchange of ΔGcoal⧧ = 53.7 kJ mol-1. DFT calculations agreed with an intrapyrazole proton transfer process assisted by two water molecules (ΔG = 63.1 kJ mol-1). An X-ray diffraction study on 4 indicated electron delocalization in the iridapyrazole ring. The reaction of the irida-β-diketone [IrHCl{(PPh2(o-C6H4CO))2H}] (1) with H2NNRR' in aprotic solvents gave irida-β-ketoimines [IrHCl{(PPh2(o-C6H4CO))(PPh2(o-C6H4CNNRR'))H}] (R = R' = Me (5); R = H, R' = Ph (8)), which can undergo N-N bond cleavage to afford the acyl-amide complex [IrHCl(PPh2(o-C6H4CO))(PPh2(o-C6H4C(O)N(CH3)2))-κP,κO] (6) or [IrHCl(PPh2(o-C6H4CO))(PPh2(o-C6H4CN)-κP)(NH2NHPh-κNH2)] (9) containing o-(diphenylphosphine)benzonitrile and phenylhydrazine, respectively. From a CH2Cl2/CH3OH solution of 9 kept at -18 °C, single crystals of [IrHCl(PPh2(o-C6H4CO))(PPh2(o-C6H4CN)-κP))(HN═NPh-κNH)] (10) containing o-(diphenylphosphine)benzonitrile and phenyldiazene were formed, as shown by X-ray diffraction. The reaction of 1 with methylhydrazine in methanol gave the hydrazine complex [IrCl(PPh2(o-C6H4CO))2(NH2NH(CH3)-κNH2)] (7). Single-crystal X-ray diffraction analysis was performed on 6 and 7.
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Affiliation(s)
- Itziar Zumeta
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain
| | - Claudio Mendicute-Fierro
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain
| | - Itxaso Bustos
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain
| | - Miguel A Huertos
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain.,Ikerbasque, Basque Foundation for Science , 48013 Bilbao, Spain
| | | | - José M Seco
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain
| | - Eider San Sebastian
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain
| | - María A Garralda
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU) , Apdo. 1072, 20080 San Sebastián, Spain
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21
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Villa-Pérez C, Oyarzabal I, Echeverría GA, Valencia-Uribe GC, Seco JM, Soria DB. Single-Ion Magnets Based on Mononuclear Cobalt(II) Complexes with Sulfadiazine. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600777] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cristian Villa-Pérez
- CEQUINOR; CONICET; CCT La Plata; Departamento de Química; Facultad de Ciencias Exactas; Universidad Nacional de la Plata; 47 y 115 1900 La Plata Argentina
| | - Itziar Oyarzabal
- Departamento de Química Aplicada Facultad de Química; UPV/EHU; Paseo Manuel de Lardizábal 3 20018 Donostia-San Sebastián Spain
| | - Gustavo A. Echeverría
- IFLP; CONICET; CCT La Plata; Departamento de Física; Facultad de Ciencias Exactas; Universidad Nacional de La Plata; 1900 La Plata Argentina
| | - Gloria C. Valencia-Uribe
- GIAFOT; Departamento de Química; Facultad de Ciencias; Universidad Nacional de Colombia-Sede Medellín; Calle 59 A No 63-020 Medellín Colombia
| | - José M. Seco
- Departamento de Química Aplicada Facultad de Química; UPV/EHU; Paseo Manuel de Lardizábal 3 20018 Donostia-San Sebastián Spain
| | - Delia B. Soria
- CEQUINOR; CONICET; CCT La Plata; Departamento de Química; Facultad de Ciencias Exactas; Universidad Nacional de la Plata; 47 y 115 1900 La Plata Argentina
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Zumeta I, Mendicute‐Fierro C, Rodríguez‐Diéguez A, Seco JM, Garralda MA. Acyliridium(III) Complexes with PCN Terdentate Ligands Including Imino‐ or Iminium‐Acyl Moieties or Formation of Hydrido from Hydroxyl. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Zumeta I, Mendicute‐Fierro C, Rodríguez‐Diéguez A, Seco JM, Garralda MA. Acyliridium(III) Complexes with PCN Terdentate Ligands Including Imino‐ or Iminium‐Acyl Moieties or Formation of Hydrido from Hydroxyl (Eur. J. Inorg. Chem. 12/2016). Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201690025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Itziar Zumeta
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Claudio Mendicute‐Fierro
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | | | - José M. Seco
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - María A. Garralda
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
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24
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Zumeta I, Mendicute‐Fierro C, Rodríguez‐Diéguez A, Seco JM, Garralda MA. Acyliridium(III) Complexes with PCN Terdentate Ligands Including Imino‐ or Iminium‐Acyl Moieties or Formation of Hydrido from Hydroxyl. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Itziar Zumeta
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Claudio Mendicute‐Fierro
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | | | - José M. Seco
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - María A. Garralda
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
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Fernández B, Oyarzabal I, Seco JM, Sebastián ES, Fairen-Jiménez D, Gómez-Ruiz S, Salinas-Castillo A, Calahorro AJ, Rodríguez-Diéguez A. Luminescence and Magnetic Properties of Two Three-Dimensional Terbium and Dysprosium MOFs Based on Azobenzene-4,4'-Dicarboxylic Linker. Polymers (Basel) 2016; 8:polym8020039. [PMID: 30979134 PMCID: PMC6432568 DOI: 10.3390/polym8020039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 01/21/2016] [Accepted: 01/26/2016] [Indexed: 11/16/2022] Open
Abstract
We report the in situ formation of two novel metal-organic frameworks based on terbium and dysprosium ions using azobenzene-4,4'-dicarboxylic acid (H₂abd) as ligand, synthesized by soft hydrothermal routes. Both materials show isostructural three-dimensional networks with channels along a axis and display intense photoluminescence properties in the solid state at room temperature. Textural properties of the metal-organic frameworks (MOFs) have been fully characterized although no appreciable porosity was obtained. Magnetic properties of these materials were studied, highlighting the dysprosium material displays slightly frequency-dependent out of phase signals when measured under zero external field and under an applied field of 1000 Oe.
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Affiliation(s)
- Belén Fernández
- Department of Inorganic Chemistry, University of Granada, 18071 Granada, Spain.
| | - Itziar Oyarzabal
- Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizabal 3, 20018 Donostia-San Sebastián, Spain.
| | - José M Seco
- Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizabal 3, 20018 Donostia-San Sebastián, Spain.
| | - Eider San Sebastián
- Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizabal 3, 20018 Donostia-San Sebastián, Spain.
| | - David Fairen-Jiménez
- Department of Chemical Engineering & Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA, UK.
| | - Santiago Gómez-Ruiz
- Department of Biology and Geology, Physics and Inorganic Chemistry, E.S.C.E.T., Rey Juan Carlos University, c/ Tulipán s/n, 28933 Móstoles, Spain.
| | | | - Antonio J Calahorro
- Department of Inorganic Chemistry, University of Granada, 18071 Granada, Spain.
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Fernández B, Beobide G, Sánchez I, Carrasco-Marín F, Seco JM, Calahorro AJ, Cepeda J, Rodríguez-Diéguez A. Controlling interpenetration for tuning porosity and luminescence properties of flexible MOFs based on biphenyl-4,4′-dicarboxylic acid. CrystEngComm 2016. [DOI: 10.1039/c5ce02036k] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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27
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Fernández B, Oyarzabal I, Fischer-Fodor E, Macavei S, Sánchez I, Seco JM, Gómez-Ruiz S, Rodríguez-Diéguez A. Multifunctional applications of a dysprosium-based metal–organic chain with single-ion magnet behaviour. CrystEngComm 2016. [DOI: 10.1039/c6ce01810f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Oyarzabal I, Fernández B, Cepeda J, Gómez-Ruiz S, Calahorro AJ, Seco JM, Rodríguez-Diéguez A. Slow relaxation of magnetization in 3D-MOFs based on dysprosium dinuclear entities bridged by dicarboxylic linkers. CrystEngComm 2016. [DOI: 10.1039/c6ce00318d] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Calahorro AJ, Oyarzabal I, Fernández B, Seco JM, Tian T, Fairen-Jimenez D, Colacio E, Rodríguez-Diéguez A. Rare earth anthracenedicarboxylate metal–organic frameworks: slow relaxation of magnetization of Nd3+, Gd3+, Dy3+, Er3+ and Yb3+ based materials. Dalton Trans 2016; 45:591-8. [DOI: 10.1039/c5dt03946k] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report lanthanide-based MOFs with interesting magnetic behaviours. To the best of our knowledge, Nd3+ and Yb3+ materials are the first examples of 3D- and 2D-MOFs, respectively, that show slow relaxation of magnetization.
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Affiliation(s)
| | - Itziar Oyarzabal
- Department of Applied Chemistry
- Chemistry Faculty
- The University of the Basque Country UPV/EHU
- Donostia-San Sebastián
- Spain
| | - Belén Fernández
- Department of Inorganic Chemistry
- University of Granada
- Granada
- Spain
| | - José M. Seco
- Department of Applied Chemistry
- Chemistry Faculty
- The University of the Basque Country UPV/EHU
- Donostia-San Sebastián
- Spain
| | - Tian Tian
- Department of Chemical Engineering & Biotechnology
- University of Cambridge
- UK
| | | | - Enrique Colacio
- Department of Inorganic Chemistry
- University of Granada
- Granada
- Spain
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30
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Calahorro AJ, Briones D, Seco JM, Salinas-Castillo A, Rodríguez-Diéguez A, Mendicute-Fierro C. Bidimensional cadmium metal-organic frameworks based on 1,3-bis(4-pyridyl)propane displaying long lifetime photoluminescence emission. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.02.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Oyarzabal I, Ruiz J, Mota AJ, Rodríguez-Diéguez A, Seco JM, Colacio E. An experimental and theoretical magneto-structural study of polynuclear NiII complexes assembled from a versatile bis(salicylaldehyde)diamine polytopic ligand. Dalton Trans 2015; 44:6825-38. [DOI: 10.1039/c5dt00356c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental and theoretical magneto-structural correlations and DFT calculations carried out in six novel NiII complexes with uncommon structures.
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Affiliation(s)
- Itziar Oyarzabal
- Departamento de Química Aplicada
- Facultad de Química
- Universidad del País Vasco UPV/EHU
- Donostia-San Sebastián
- Spain
| | - José Ruiz
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Antonio J. Mota
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | | | - José M. Seco
- Departamento de Química Aplicada
- Facultad de Química
- Universidad del País Vasco UPV/EHU
- Donostia-San Sebastián
- Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
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32
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San Nacianceno V, Azpeitia S, Ibarlucea L, Mendicute-Fierro C, Rodríguez-Diéguez A, Seco JM, San Sebastian E, Garralda MA. Stereoselective formation and catalytic activity of hydrido(acylphosphane)(chlorido)(pyrazole)rhodium(iii) complexes. Experimental and DFT studies. Dalton Trans 2015; 44:13141-55. [DOI: 10.1039/c5dt01705j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereoselectivity assisted by hydrogen bond formation, inhibited by steric hindrance, predicted by DFT calculations.
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Affiliation(s)
- Virginia San Nacianceno
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
| | - Susan Azpeitia
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
| | - Lourdes Ibarlucea
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
| | - Claudio Mendicute-Fierro
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
| | | | - José M. Seco
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
| | - Eider San Sebastian
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
| | - María A. Garralda
- Facultad de Química de San Sebastián
- Universidad del País Vasco (UPV/EHU)
- 20080 San Sebastián
- Spain
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Salinas-Castillo A, Calahorro AJ, Briones D, Fairen-Jiménez D, Gándara F, Mendicute-Fierro C, Seco JM, Pérez-Mendoza M, Fernández B, Rodríguez-Diéguez A. 2D-cadmium MOF and gismondine-like zinc coordination network based on the N-(2-tetrazolethyl)-4′-glycine linker. NEW J CHEM 2015. [DOI: 10.1039/c5nj00011d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We have designed and synthesized two new metal-organic-frameworks (MOFs) using the novel N-(2-tetrazolethyl)-4′-glycine spacer (TeGly)2−. These materials exhibit intense photoluminescence.
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Affiliation(s)
| | | | - David Briones
- Department of Chemical and Energy Technology
- Rey Juan Carlos University
- 28933 Móstoles
- Spain
| | | | - Felipe Gándara
- Department of New Architectures in Materials Chemistry Materials Science Institute of Madrid - CSIC Madrid
- Spain
| | | | - José M. Seco
- Departamento de Química Aplicada
- Facultad de Química
- UPV/EHU
- Donostia-San Sebastián
- Spain
| | | | - Belén Fernández
- Departamento de Química Inorgánica
- Universidad de Granada
- Granada
- Spain
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Zumeta I, Mendicute-Fierro C, Rodríguez-Diéguez A, Seco JM, Garralda MA. On the Reactivity of Dihydridoirida-β-diketones with 2-Aminopyridines. Formation of Acylhydrido Complexes with New PCN Terdentate Ligands. Organometallics 2014. [DOI: 10.1021/om5011353] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Itziar Zumeta
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain
| | - Claudio Mendicute-Fierro
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain
| | | | - José M. Seco
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain
| | - María A. Garralda
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain
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35
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Nacianceno VS, Ibarlucea L, Mendicute-Fierro C, Rodríguez-Diéguez A, Seco JM, Zumeta I, Ubide C, Garralda MA. Hydrido{(acylphosphine)(diphenylphosphinous acid)}rhodium(III) Complexes. Catalysts for the Homogeneous Hydrolysis of Ammonia- or Amine-Boranes under Air. Organometallics 2014. [DOI: 10.1021/om500666w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Virginia San Nacianceno
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
| | - Lourdes Ibarlucea
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
| | - Claudio Mendicute-Fierro
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
| | | | - José M. Seco
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
| | - Itziar Zumeta
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
| | - Carlos Ubide
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
| | - María A. Garralda
- Facultad
de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain
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36
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Botana L, Ruiz J, Mota AJ, Rodríguez-Diéguez A, Seco JM, Oyarzabal I, Colacio E. Anion controlled structural and magnetic diversity in unusual mixed-bridged polynuclear NiII complexes with a versatile bis(2-methoxy phenol)diamine hexadentate ligand. An experimental and theoretical magneto-structural study. Dalton Trans 2014; 43:13509-24. [DOI: 10.1039/c4dt01253d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six new polynuclear NiII complexes with uncommon structures have been magneto-structural studied.
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Affiliation(s)
- Luis Botana
- Departamento de Química Aplicada
- Facultad de Química
- UPV/EHU
- Donostia-San Sebastián, Spain
| | - José Ruiz
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada, Spain
| | - Antonio J. Mota
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada, Spain
| | | | - José M. Seco
- Departamento de Química Aplicada
- Facultad de Química
- UPV/EHU
- Donostia-San Sebastián, Spain
| | - Itziar Oyarzabal
- Departamento de Química Aplicada
- Facultad de Química
- UPV/EHU
- Donostia-San Sebastián, Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada, Spain
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Calahorro AJ, Macchi P, Salinas-Castillo A, Sebastián ES, Seco JM, Rodríguez-Diéguez A. Photoluminescence of the first examples of metal–organic frameworks with two novel tetrazolatephenyl acetic acid derivatives: an experimental and theoretical study. CrystEngComm 2014. [DOI: 10.1039/c4ce00662c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first Zn metal–organic frameworks with 1,3-tetrazolatephenyl-acetic and 1,4-tetrazolatephenyl-acetic spacers.
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Affiliation(s)
| | - Piero Macchi
- Department of Chemistry and Biochemistry
- University of Bern
- Bern, Switzerland
| | | | - Eider San Sebastián
- Departamento de Química Aplicada
- Facultad de Químicas de San Sebastián
- Universidad del País Vasco/Euskal Herriko Unibertsitatea
- San Sebastián, Spain
| | - José M. Seco
- Departamento de Química Aplicada
- Facultad de Químicas de San Sebastián
- Universidad del País Vasco/Euskal Herriko Unibertsitatea
- San Sebastián, Spain
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Bergueiro J, Freire F, Wendler EP, Seco JM, Quiñoá E, Riguera R. The ON/OFF switching by metal ions of the “Sergeants and Soldiers” chiral amplification effect on helical poly(phenylacetylene)s. Chem Sci 2014. [DOI: 10.1039/c3sc53330a] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chiral amplification can be switched ON/OFF to both helical senses by the presence/absence of metal ions in copolymers of poly(phenylacetylene)s.
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Affiliation(s)
- Julián Bergueiro
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS)
- University of Santiago de Compostela
- E-15782 Santiago de Compostela, Spain
| | - Félix Freire
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS)
- University of Santiago de Compostela
- E-15782 Santiago de Compostela, Spain
| | - Edison P. Wendler
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS)
- University of Santiago de Compostela
- E-15782 Santiago de Compostela, Spain
| | - José M. Seco
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS)
- University of Santiago de Compostela
- E-15782 Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS)
- University of Santiago de Compostela
- E-15782 Santiago de Compostela, Spain
| | - Ricardo Riguera
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials (CIQUS)
- University of Santiago de Compostela
- E-15782 Santiago de Compostela, Spain
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Seco JM, Fairen-Jimenez D, Calahorro AJ, Méndez-Liñán L, Pérez-Mendoza M, Casati N, Colacio E, Rodríguez-Diéguez A. Modular structure of a robust microporous MOF based on Cu2 paddle-wheels with high CO2 selectivity. Chem Commun (Camb) 2013; 49:11329-31. [PMID: 24162648 DOI: 10.1039/c3cc44193h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a new MOF with Cu2 paddle-wheels connected to glutarate and 1,3-bis(4-pyridyl)propane linkers has been explored. Experimental gas adsorption measurements reveal that the MOF is essentially non-porous to methane whereas it presents a type III isotherm upon CO2 adsorption, leading to high capacity and outstanding CO2 selectivity.
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Affiliation(s)
- José M Seco
- Departamento de Química Aplicada, Facultad de Ciencias Químicas de San Sebastián, Universidad del País Vasco, Spain
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Leiras S, Freire F, Seco JM, Quiñoá E, Riguera R. Controlled modulation of the helical sense and the elongation of poly(phenylacetylene)s by polar and donor effects. Chem Sci 2013. [DOI: 10.1039/c3sc50835h] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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41
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Garralda MA, Mendicute-Fierro C, Rodríguez-Diéguez A, Seco JM, Ubide C, Zumeta I. Efficient hydridoirida-β-diketone-catalyzed hydrolysis of ammonia- or amine-boranes for hydrogen generation in air. Dalton Trans 2013; 42:11652-60. [DOI: 10.1039/c3dt51261d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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42
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Barquín M, Ciganda R, Garralda MA, Ibarlucea L, Mendicute‐Fierro C, Rodríguez‐Diéguez A, Seco JM. Iridium and Rhodium Complexes with the Hemilabile Ligand [2‐(1,3‐Dioxolane‐2‐yl)phenyl]diphenylphosphane – Behaviour in Solution and Structural Characterization. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201188] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Montserrat Barquín
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Roberto Ciganda
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - María A. Garralda
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Lourdes Ibarlucea
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Claudio Mendicute‐Fierro
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | | | - José M. Seco
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
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Ruiz J, Mota AJ, Rodríguez-Diéguez A, Oyarzabal I, Seco JM, Colacio E. Rational design of ferromagnetic coupled diphenoxocarboxylate triply bridged dinuclear nickel(ii) complexes: orbital countercomplementarity of the bridging ligands. Dalton Trans 2012; 41:14265-73. [DOI: 10.1039/c2dt31643a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Salinas-Castillo A, Calahorro A, Choquesillo-Lazarte D, Seco JM, Rodríguez-Diéguez A. A new 2D cadmium chloride network with 2-aminopyrimidine displaying long lifetime photoluminescence emission. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.02.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Louzao I, Seco JM, Quiñoá E, Riguera R. The Use of a Single Derivative in the Configurational Assignment of Ketone Cyanohydrins. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Barquín M, González Garmendia MJ, Larrínaga L, Pinilla E, Seco JM, Torres MR. Syntheses, structures, and magnetic properties of dinuclear/1-D copper(II) acetato and formato derivatives with methylpyrazine and dimethylpyrazine. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.487559] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Montserrat Barquín
- a Facultad de Ciencias Químicas, Grupo de Química Inorgánica , Universidad del País Vasco , UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - María J. González Garmendia
- a Facultad de Ciencias Químicas, Grupo de Química Inorgánica , Universidad del País Vasco , UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Liher Larrínaga
- a Facultad de Ciencias Químicas, Grupo de Química Inorgánica , Universidad del País Vasco , UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Elena Pinilla
- b Facultad de Ciencias Químicas, Laboratorio de Difracción de Rayos X , Universidad Complutense , 28040 Madrid, Spain
- c Facultad de Ciencias Químicas, Departamento de Química Inorgánica , Universidad Complutense , 28040 Madrid, Spain
| | - José M. Seco
- a Facultad de Ciencias Químicas, Grupo de Química Inorgánica , Universidad del País Vasco , UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - María R. Torres
- b Facultad de Ciencias Químicas, Laboratorio de Difracción de Rayos X , Universidad Complutense , 28040 Madrid, Spain
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Barquín M, Cocera N, González Garmendia MJ, Larrínaga L, Pinilla E, Seco JM, Torres MR. Acetato and formato copper(II) complexes with 4,4′-dimethyl-2,2′-bipyridine and 5,5′-dimethyl-2,2′-bipyridine: Synthesis, crystal structure, magnetic properties and EPR results. A new 1D polymeric water chain. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.09.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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González Garmendia MJ, San Nacianceno V, Seco JM, Zúñiga FJ. Copper(II) succinate complexes with 1,2-di-4-pyridylethane and 1,3-di-4-pyridylpropane. Acta Crystallogr C 2009; 65:m436-9. [PMID: 19893227 DOI: 10.1107/s0108270109040566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Accepted: 10/05/2009] [Indexed: 11/10/2022] Open
Abstract
The compounds poly[di-mu(4)-succinato-mu(2)-1,2-di-4-pyridylethane-dicopper(II)], [Cu(2)(C(4)H(4)O(4))(2)(C(12)H(12)N(2))](n), (I), and poly[di-mu(4)-succinato-mu(2)-1,3-di-4-pyridylpropane-dicopper(II)], [Cu(2)(C(4)H(4)O(4))(2)(C(13)H(14)N(2))](n), (II), exhibit polymeric structures with the dicopper units doubly bridged by bis-bidentate succinate groups and crosslinked by the separator bis(pyridyl) molecules. In (I), the molecule exhibits a centre of inversion located midway between the core Cu-dimer atoms and another that relates half of the bis(pyridyl)ethane ligand to the other half. Compound (II) has a similar molecular packing but with a doubled lattice constant and noncentrosymmetric core units. An antiferromagnetic interaction due to the dinuclear copper units was deduced from magnetic subsceptibility measurements, and spin triplet signals were detected in the electron paramagnetic resonance spectra for both compounds.
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Affiliation(s)
- M J González Garmendia
- Grupo de Química Inorgánica, Facultad de Ciencias Químicas, Universidad del País Vasco UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
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Rodríguez-Diéguez A, Mota AJ, Seco JM, Palacios MA, Romerosa A, Colacio E. Influence of metal ions, coligands and reaction conditions on the structural versatility and properties of 5-pyrimidyl-tetrazolate containing complexes. Dalton Trans 2009:9578-86. [DOI: 10.1039/b910811d] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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García R, Seco JM, Vázquez SA, Quiñoá E, Riguera R. Role of Barium(II) in the Determination of the Absolute Configuration of Chiral Amines by 1H NMR Spectroscopy. J Org Chem 2006; 71:1119-30. [PMID: 16438530 DOI: 10.1021/jo0522207] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The assignment of the absolute configuration of alpha-chiral primary amines by complexation of their MPA derivatives with Ba2+ and NMR analysis of the changes generated is presented. All that is required is (a) the derivatization of the amine of unknown configuration with one enantiomer of the auxiliary reagent (MPA), either (R) or (S)-alpha-methoxyphenylacetic acid, (b) the recording of the 1H NMR spectrum of the resulting amide in MeCN-d3, (c) the addition of Ba(ClO4)2 to the NMR tube, and (d) the recording of a second spectrum after a few minutes of shaking. The above steps take a few minutes and are followed by an analysis of the shifts (measured as Deltadelta(Ba)) produced on the L1 and L2 substituents of the amine by the addition of Ba2+ and their comparison with those expected from the conformational changes produced by the complexation. The conformational changes initiated by complexation have been subjected to NMR and CD studies, which showed that the formation of the complex shifts the equilibrium from an antiperiplanar (AP) to a synperiplanar (SP) form, leading to an increase of the shielding by the phenyl group of MPA of the substituent of the amine located on the same side. In addition, theoretical calculations [density functional theory (DFT)] provide further support for the formation, structure, and stability of the complexes. The general applicability of this method and the trustworthiness of the resulting configurational assignment were guaranteed with a series of amines of known absolute configuration and varied structures, used as test compounds. The method proposed is simple, fast, and inexpensive, and it requires a very small amount of sample, only one derivatization, and the recording of just two 1H NMR spectra at room temperature. A graphical guide to simplify the application of this method is included.
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Affiliation(s)
- Rosa García
- Departamento de Química Orgánica, Facultad de Química, and Unidad de RMN de Biomoléculas Asociada al CSIC, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
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