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Villa-Pérez C, Zabala-Lekuona A, Vitorica-Yrezabal IJ, Seco JM, Cepeda J, Echeverría GA, Soria DB. Spin canting and slow magnetic relaxation in mononuclear cobalt(II) sulfadiazine ternary complexes. Dalton Trans 2024. [PMID: 38252541 DOI: 10.1039/d3dt02359a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Monomeric [Co(SDZ)2phen] (1) and [Co(SDZ)(bq)Cl] (2) complexes (SDZ = sulfadiazine, phen = 1,10-phenanthroline, and bq = 2,2'-biquinoline) have been synthesized and characterized. X-ray diffraction studies indicate that SDZ acts as a bidentate ligand coordinating through the sulfonamide and the pyrimidine N atoms in both compounds. In complex 1, the coordination sphere consists of two SDZ ligands and a bis-chelating phen ligand, giving rise to a CoN6 coordination sphere. On the other hand, 2 has a CoN4Cl core, with two N-atoms from SDZ and two from the bq ligand. Both compounds have been studied by dc and ac magnetometry and shown to display slow magnetic relaxation under an optimum external dc field (1 kOe) at low temperatures. Moreover, compound 2 displays long range magnetic ordering provided by spin-canted antiferromagnetism, which has been characterized by further field-dependent magnetic susceptibility measurements, FC/ZFC curves, hysteresis loops and frequency-independent ac curves. The signs of the calculated D parameters, positive in 1 and negative in 2, have been rationalized according to the two lowest-lying transitions in the orbital energy diagrams derived from ab initio ligand field theory (AILFT). In a subsequent attempt to reveal the possible hidden zero-field SMM behaviour, Ni(II)-based 3 and Co(II)-doped Ni(II)-based (with a Ni : Co ratio of 0.9 : 0.1) heterometallic compound 2Ni were synthesized.
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Affiliation(s)
- Cristian Villa-Pérez
- CEQUINOR (CONICET, CCT - La Plata), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de la Plata, Bv. 120 no. 1465, 1900, La Plata, Argentina.
| | - Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel Lardizabal no. 3, 20018, Donostia, Spain.
| | - Iñigo J Vitorica-Yrezabal
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071, Granada, Spain
| | - José Manuel Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel Lardizabal no. 3, 20018, Donostia, Spain.
| | - Javier Cepeda
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel Lardizabal no. 3, 20018, Donostia, Spain.
| | - Gustavo Alberto Echeverría
- IFLP (CONICET, CCT - La Plata), Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de la Plata, 47 y 115, 1900, La Plata, Argentina
| | - Delia Beatriz Soria
- CEQUINOR (CONICET, CCT - La Plata), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de la Plata, Bv. 120 no. 1465, 1900, La Plata, Argentina.
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2
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Slow Magnetic Relaxation and Modulated Photoluminescent Emission of Coordination Polymer Based on 3-Amino-4-hydroxybenzoate Zn and Co Metal Ions. Molecules 2023; 28:molecules28041846. [PMID: 36838833 PMCID: PMC9964557 DOI: 10.3390/molecules28041846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/18/2023] Open
Abstract
As a starting point, a new 3D porous framework with the {[CoL]·0.5DMF·H2O}n chemical formula (where L = 3-amino-4-hydroxybenzoate) is described. Its performance as a single molecule magnet was explored. The study of magnetic properties reveals that Co-MOF shows no frequency-fdependant alternating current (ac) signals under zero direct current (dc) magnetic field, whereas single-molecule magnet behaviour is achieved when CoII ions are diluted in a ZnII based matrix. Interestingly, this strategy renders a bifunctional [CoxZn1-xL]n material that is also characterized by a strong photoluminescent emitting capacity.
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Crystal structure of poly[tetrakis(μ 3-2-aminonicotinato-κ 3N,O,O′)-(μ 2-oxalato-κ 4
O, O′: O″, O′″)-(μ 4-oxalato-κ 6
N:N′:O,O′:O″,O′″)dicopper(I)-disamarium(III)], [SmCu(C 6N 2H 5O 2) 2(C 2O 4)]
n
. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
[SmCu(C6N2H5O2)2(C2O4)]
n
, triclinic,
P
1
‾
$P\overline{1}$
(no. 2), a = 9.457(6) Å, b = 9.482(4) Å, c = 11.013(4) Å, α = 75.87(4)°, β = 89.853(12)°, γ = 62.786(11)°, V = 844.8(7) Å3, Z = 2, R
gt
(F) = 0.0292, wR
ref
(F
2) = 0.0691, T = 296 K.
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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] [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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Jiao Y, Jin FN, Feng SS, Wang A, Englert U. Synthesis, crystal structure and magnetic properties of a one-dimensional Mn 2+ complex constructed from (+)-dibenzoyltartaric acid and 2,2'-bipyridine. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2021; 77:707-712. [PMID: 34738541 DOI: 10.1107/s2053229621010627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/14/2021] [Indexed: 11/11/2022]
Abstract
The self-assembly reaction of (+)-dibenzoyltartaric acid (D-H2DBTA) with 2,2'-bipyridine (bpy) and Mn(CH3CO2)2·4H2O yielded a new coordination polymer, namely, catena-poly[[[diaqua(2,2'-bipyridine-κ2N,N')manganese(II)]-μ-2,3-bis(benzoyloxy)butanedioato-κ2O2:O3] dihydrate], {[Mn(C18H12O8)(C10H8N2)(H2O)2]·2H2O}n or {[Mn(DBTA)(bpy)(H2O)2]·2H2O}n, (I). Complex (I) has been characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA) and single-crystal and powder X-ray diffraction. It crystallizes in the orthorhombic space group P212121. In the complex, the Mn2+ cation displays a distorted octahedral {MnO4N2} geometry, formed from two carboxylate O atoms of two DBTA2- ligands, two cis-oriented N atoms from one chelating 2,2'-bipyridine ligand and two trans-oriented O atoms from coordinated water molecules. The polymer displays a 1D chain with an Mn...Mn distance of 9.428 (1) Å. Due to the presence of flexible polycarboxylate and rigid bipyridyl ligands in the molecular structure, a high thermal stability of the complex is attained. The magnetic properties of (I) were analyzed based on the mononuclear Mn2+ model due to the long intramolecular Mn...Mn distance. The zero field splitting (ZFS) contribution in the high-spin Mn2+ cation is almost negligible and there are weak antiferromagnetic couplings between 1D chains [zJ' = -0.062 (5) cm-1], corresponding to an intermolecular Mn...Mn distance of 7.860 (2) Å.
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Affiliation(s)
- Yuan Jiao
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Fu Ning Jin
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Si Si Feng
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Ai Wang
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Ulli Englert
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
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