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Ferreira-Filho VC, Morais B, Vieira BJC, Waerenborgh JC, Carmezim MJ, Tóth CN, Même S, Lacerda S, Jaque D, Sousa CT, Campello MPC, Pereira LCJ. Influence of SPION Surface Coating on Magnetic Properties and Theranostic Profile. Molecules 2024; 29:1824. [PMID: 38675647 PMCID: PMC11052394 DOI: 10.3390/molecules29081824] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
This study aimed to develop multifunctional nanoplatforms for both cancer imaging and therapy using superparamagnetic iron oxide nanoparticles (SPIONs). Two distinct synthetic methods, reduction-precipitation (MR/P) and co-precipitation at controlled pH (MpH), were explored, including the assessment of the coating's influence, namely dextran and gold, on their magnetic properties. These SPIONs were further functionalized with gadolinium to act as dual T1/T2 contrast agents for magnetic resonance imaging (MRI). Parameters such as size, stability, morphology, and magnetic behavior were evaluated by a detailed characterization analysis. To assess their efficacy in imaging and therapy, relaxivity and hyperthermia experiments were performed, respectively. The results revealed that both synthetic methods lead to SPIONs with similar average size, 9 nm. Mössbauer spectroscopy indicated that samples obtained from MR/P consist of approximately 11-13% of Fe present in magnetite, while samples obtained from MpH have higher contents of 33-45%. Despite coating and functionalization, all samples exhibited superparamagnetic behavior at room temperature. Hyperthermia experiments showed increased SAR values with higher magnetic field intensity and frequency. Moreover, the relaxivity studies suggested potential dual T1/T2 contrast agent capabilities for the coated SPpH-Dx-Au-Gd sample, thus demonstrating its potential in cancer diagnosis.
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Affiliation(s)
- Vital Cruvinel Ferreira-Filho
- Centro de Ciências e Tecnologias Nucleares, Departamento Engenharia Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN10, km 139,7, 2695-066 Bobadela, Portugal; (V.C.F.-F.); (B.M.); (B.J.C.V.); (J.C.W.)
| | - Beatriz Morais
- Centro de Ciências e Tecnologias Nucleares, Departamento Engenharia Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN10, km 139,7, 2695-066 Bobadela, Portugal; (V.C.F.-F.); (B.M.); (B.J.C.V.); (J.C.W.)
| | - Bruno J. C. Vieira
- Centro de Ciências e Tecnologias Nucleares, Departamento Engenharia Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN10, km 139,7, 2695-066 Bobadela, Portugal; (V.C.F.-F.); (B.M.); (B.J.C.V.); (J.C.W.)
| | - João Carlos Waerenborgh
- Centro de Ciências e Tecnologias Nucleares, Departamento Engenharia Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN10, km 139,7, 2695-066 Bobadela, Portugal; (V.C.F.-F.); (B.M.); (B.J.C.V.); (J.C.W.)
| | - Maria João Carmezim
- Centro de Química Estrutural-CQE, DEQ, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;
- ESTSetúbal, CDP2T, Instituto Politécnico de Setúbal, 2910-761 Setúbal, Portugal
| | - Csilla Noémi Tóth
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d’Orléans, Rue Charles Sadron, 45071 Orléans, CEDEX 2, France; (C.N.T.); (S.M.); (S.L.)
| | - Sandra Même
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d’Orléans, Rue Charles Sadron, 45071 Orléans, CEDEX 2, France; (C.N.T.); (S.M.); (S.L.)
| | - Sara Lacerda
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d’Orléans, Rue Charles Sadron, 45071 Orléans, CEDEX 2, France; (C.N.T.); (S.M.); (S.L.)
| | - Daniel Jaque
- Departamento de Física de Materiales, Universidad Autonoma de Madrid, Avda. Francisco Tomás y Valiente 7, 28049 Madrid, Spain;
| | - Célia T. Sousa
- Departamento de Física Aplicada, Universidad Autonoma de Madrid, Avda. Francisco Tomás y Valiente 7, 28049 Madrid, Spain;
| | - Maria Paula Cabral Campello
- Centro de Ciências e Tecnologias Nucleares, Departamento Engenharia Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN10, km 139,7, 2695-066 Bobadela, Portugal; (V.C.F.-F.); (B.M.); (B.J.C.V.); (J.C.W.)
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares, Departamento Engenharia Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN10, km 139,7, 2695-066 Bobadela, Portugal; (V.C.F.-F.); (B.M.); (B.J.C.V.); (J.C.W.)
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Costa IM, Franco CHJ, Nesterov DS, André V, Pereira LCJ, Kirillov AM. Alkoxy-Bridged Dicopper(II) Cores Meet Tetracyanonickelate Linkers: Structural, Magnetic, and Theoretical Investigation of Cu/Ni Coordination Polymers. J Phys Chem C Nanomater Interfaces 2024; 128:6053-6064. [PMID: 38629114 PMCID: PMC11017569 DOI: 10.1021/acs.jpcc.3c08112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/13/2024] [Accepted: 03/13/2024] [Indexed: 04/19/2024]
Abstract
Two heterometallic Cu(II)/Ni(II) coordination polymers, [Cu2(Hbdea)2Ni(CN)4]n (1) and [Cu2(dmea)2Ni(CN)4]n·nH2O (2), were successfully self-assembled in water by reacting Cu(II) nitrate with H2bdea (N-butyldiethanolamine) and Hdmea (N,N-dimethylethanolamine) in the presence of sodium hydroxide and [Ni(CN)4]2-. These new coordination polymers were investigated by single-crystal and powder X-ray diffraction and fully characterized by FT-IR spectroscopy, thermogravimetry, elemental analysis, variable-temperature magnetic susceptibility measurements, and theoretical DFT and CASSCF calculations. Despite differences in crystal systems, in both compounds, each dinuclear building block [Cu2(μ-aminopolyalcoholate)2]2+ is bridged by diamagnetic [Ni(CN)4]2- linkers, resulting in 1D (1) or 2D (2) metal-organic architectures. Experimental magnetic studies show that both compounds display strong antiferromagnetic coupling (J = -602.1 cm-1 for 1 and -151 cm-1 for 2) between Cu(II) ions within the dimers mediated by the μ-O-alkoxo bridges. These results are corroborated by the broken symmetry DFT studies, which also provide further insight into the electronic structures of copper dimeric units. By reporting a facile self-assembly synthetic protocol, this study can be a model to widen a still limited family of heterometallic Cu/Ni coordination polymer materials with different functional properties.
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Affiliation(s)
- Inês
F. M. Costa
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Centro
de Ciências e Tecnologias Nucleares, Departmento de Engenharia
Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Chris H. J. Franco
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Dmytro S. Nesterov
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Vânia André
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Laura C. J. Pereira
- Centro
de Ciências e Tecnologias Nucleares, Departmento de Engenharia
Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Alexander M. Kirillov
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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Huang Q, Chen D, Li F, Vieira BJC, Waerenborgh JC, Cheng X, Pereira LCJ, Li Y, Jin Y, Zhu W, Lü M. Investigation of Charge-Ordered Barium Iron Fluorides with One-Dimensional Structural Diversity and Complex Magnetic Interactions. Inorg Chem 2023; 62:14044-14054. [PMID: 37594252 DOI: 10.1021/acs.inorgchem.3c02076] [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: 08/19/2023]
Abstract
Three mixed-valence barium iron fluorides, Ba7Fe7F34, Ba2Fe2F9, and BaFe2F7, were prepared through hydrothermal redox reactions. The characteristic structures of these compounds feature diverse distributions of FeIIF6 octahedra and FeIIIF6 groups. Ba7Fe7F34 contained one-dimensional infinite ∞[FeIIFeIII6F34]14- double chains, comprising cis corner-sharing octahedra along the b direction; Ba2Fe2F9 contained one-dimensional ∞[Fe2F9]4- double chains, consisting of cis corner-sharing octahedra along the chain (a-axis direction) and trans corner-sharing octahedra vertical to the chain, while BaFe2F7 revealed three-dimensional (3D) frameworks that consist of isolated edge-sharing dinuclear FeII2F10 units linked via corners by FeIIIF6 octahedra. Magnetization and Mössbauer spectroscopy measurements revealed that Ba7Fe7F34 exhibits an antiferromagnetic phase transition at ∼11 K, where ferrimagnetic ∞[FeIIFeIII6F34]14- double chains are arranged in a paralleling manner, while Ba2Fe2F9 shows canted antiferromagnetic ordering at ∼32.5 K, leading to noncollinear spin ordering.
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Affiliation(s)
- Qingqing Huang
- School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Dan Chen
- School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Feifan Li
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Bruno J C Vieira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, EN 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - João C Waerenborgh
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, EN 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - Xiedong Cheng
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Laura C J Pereira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, EN 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - Yaping Li
- School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Yanling Jin
- School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Wenxuan Zhu
- School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
| | - Minfeng Lü
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, 212100 Zhenjiang, Jiangsu, China
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Freccero R, Pereira LCJ, Solokha P, De Negri S. Flux Growth, Crystal Structure, and Chemical Bonding of Yb 2PdGe 3, an AlB 2 Superstructure within the Rare-Earth Series. Inorg Chem 2023; 62:1988-1999. [PMID: 36662518 PMCID: PMC9906778 DOI: 10.1021/acs.inorgchem.2c03303] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The complete structure revision of the RE2PdGe3 (RE = rare-earth metal) series revealed that Yb2PdGe3 is the only AlB2 ordered superstructure. Good-quality single crystals of this compound were successfully grown from molten indium flux, enabling accurate single-crystal investigations. Yb2PdGe3 crystallizes with the Ce2CoSi3-type structure in the hexagonal space group P6/mmm (no. 191) with lattice parameters a = 8.468(1) Å and c = 4.0747(7) Å. This structure is a four-order derivative of AlB2, composed of planar ∞2[PdGe3] honeycomb layers spaced by Yb species, located at the center of Ge6 and Ge4Pd2 hexagons. A superconducting transition is observed below the critical temperature of 4 K. A divalent state of Yb is deduced from magnetic susceptibility measurements below room temperature, which indicate an almost nonmagnetic behavior. A charge transfer from Yb to Pd and Ge was evidenced by the Quantum Theory of Atoms in Molecules (QTAIM) effective charges; polar four-atomic Ge-Pd/Yb and two-atomic Pd-Yb bonds were observed from the ELI-D (electron localizability indicator), partial ELI-D, and ELI-D/QTAIM intersections. The bonding interactions between Ge atoms within regular Ge6 hexagons are found to be intermediate between single bonds, as in elemental Ge, and higher-order bonds in the hypothetic Ge6H6 and Ge66- aromatic molecules.
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Affiliation(s)
- Riccardo Freccero
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, Via Dodecaneso 31, I-16146Genova, Italy,riccardo.freccero@.unige.it
| | - Laura C. J. Pereira
- Centro
de Ciências e Tecnologias Nucleares, Department of Engenharia
e Ciências Nucleares, Instituto Superior Técnico, Universidade Lisboa, Estrada N acional 10, 2695-066Bobadela, Portugal
| | - Pavlo Solokha
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, Via Dodecaneso 31, I-16146Genova, Italy
| | - Serena De Negri
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, Via Dodecaneso 31, I-16146Genova, Italy
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Ferreira PS, Malta JF, Bandeira NAG, Allgaier A, van Slageren J, Paixão JA, Almeida M, Pereira LCJ, Gomes PT. Enhancing SIM behaviour in a mononuclear tetrahedral [Co( N, N'-2-iminopyrrolyl) 2] complex. Chem Commun (Camb) 2022; 58:9682-9685. [PMID: 35950347 DOI: 10.1039/d2cc03511a] [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 new homoleptic Co(II) complex bearing two highly sterically congested 2-formiminopyrrolyl N,N'-chelating ligands is reported, displaying slow relaxation of the magnetisation at zero static (DC) field. This compound shows a large value for the zero-field splitting (ZFS) parameter D of -42.6(4) cm-1 leading to a spin-reversal energy barrier Ueff of 85 cm-1.
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Affiliation(s)
- Patrícia S Ferreira
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisboa, Portugal. .,Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066, Bobadela LRS, Portugal.
| | - José F Malta
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066, Bobadela LRS, Portugal. .,CFisUC - Centro de Física da Universidade de Coimbra, Departamento de Física, Universidade de Coimbra, 3004-516, Coimbra, Portugal
| | - Nuno A G Bandeira
- BioISI - Biosystems & Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016, Lisboa, Portugal.
| | - Alexander Allgaier
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart, D-70569, Germany.
| | - Joris van Slageren
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart, D-70569, Germany.
| | - José A Paixão
- CFisUC - Centro de Física da Universidade de Coimbra, Departamento de Física, Universidade de Coimbra, 3004-516, Coimbra, Portugal
| | - Manuel Almeida
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066, Bobadela LRS, Portugal.
| | - Laura C J Pereira
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066, Bobadela LRS, Portugal.
| | - Pedro T Gomes
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisboa, Portugal.
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Lopes G, Gama VPSD, Santos IC, Branco Lopes E, Brotas G, Pereira LCJ, Cerdeira AC, Paixão JA, Rabaça S, Almeida M. Bilayer conducting salts with polymeric anions. CrystEngComm 2022. [DOI: 10.1039/d2ce00515h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five new salts of 5-cyanobenzene-ethylenedithio-tetrathiafulvalene (CNB-EDT-TTF), with general formula (CNB-EDT-TTF)4A, and anions A= Ag(CN)2 (1), Ag(CN)2•H2O (2), Ag2(CN)3 (3), Ag(SCN)2 (4) and Hg2(SCN)5 (5), were prepared by electrocrystallisation and characterised...
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Ferreira PS, Cerdeira AC, Cruz TFC, Bandeira NAG, Hunger D, Allgaier A, van Slageren J, Almeida M, Pereira LCJ, Gomes PT. Single-ion magnet behaviour in homoleptic Co( ii) complexes bearing 2-iminopyrrolyl ligands. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00601d] [Citation(s) in RCA: 2] [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: 01/13/2023]
Abstract
Four-coordinate distorted tetrahedral bis(2-iminopyrrolyl)cobalt(ii) complexes behave as Single-Ion Magnets (SIMs) in the absence of an external magnetic field.
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Affiliation(s)
- Patrícia S. Ferreira
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Ana C. Cerdeira
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Tiago F. C. Cruz
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Nuno A. G. Bandeira
- BioISI – Biosystems & Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
| | - David Hunger
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Alexander Allgaier
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Joris van Slageren
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Manuel Almeida
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Pedro T. Gomes
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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Cerdeira AC, Leal JP, Avó J, Viola C, Casimiro MH, Ferreira LM, Paz FAA, Pereira LCJ, Pereira CCL, Monteiro B. Multifunctionality of the [C 2mim][Ln(fod) 4] series (Ln = Nd–Tm except Pm): magnetic, luminescence and thermochemical studies. NEW J CHEM 2022. [DOI: 10.1039/d2nj01415g] [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
The [C2mim][Ln(fod)4] series presents a rare and reversible polymorphism, NIR and visible emission as well as SMM behavior. The varieties of physical behaviors make these compounds suitable for potential technological and/or biomedical applications.
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Affiliation(s)
- Ana C. Cerdeira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - João P. Leal
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - João Avó
- Associate Laboratory i4HB–Institute for Health and Bioeconomy and Institute for Bioengineering and Biosciences (IBB), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lis-boa, Portugal
| | - Catarina Viola
- LAQV-REQUIMTE, Dep. de Química, Universidade Nova de Lisboa, 2829-516, Monte de Caparica, Portugal
| | - Maria H. Casimiro
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lis-boa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Luis M. Ferreira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Filipe A. A. Paz
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Cláudia C. L. Pereira
- LAQV-REQUIMTE, Dep. de Química, Universidade Nova de Lisboa, 2829-516, Monte de Caparica, Portugal
| | - Bernardo Monteiro
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, DEQ, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
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Buades AB, Pereira LCJ, Vieira BJC, Cerdeira AC, Waerenborgh JC, Pinheiro T, Alves de Matos AP, Pinto CG, Guerreiro J, Mendes F, Valic S, Teixidor F, Vinas C, Marques FM. Mössbauer effect using 57Fe-ferrabisdicarbollide ([o-57FESAN]-): a glance into the potential of a low-dose approach for glioblastoma radiotherapy. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01513c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although a variety of cancers is initially susceptible to chemotherapy, they eventually develop multi-drug resistance. To overcome this situation, more effective and selective treatments are necessary by using anti-tumour agents...
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Barcelos DA, Leitao DC, Pereira LCJ, Gonçalves MC. What Is Driving the Growth of Inorganic Glass in Smart Materials and Opto-Electronic Devices? Materials (Basel) 2021; 14:2926. [PMID: 34072283 PMCID: PMC8198596 DOI: 10.3390/ma14112926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 02/06/2023]
Abstract
Inorganic glass is a transparent functional material and one of the few materials that keeps leading innovation. In the last decades, inorganic glass was integrated into opto-electronic devices such as optical fibers, semiconductors, solar cells, transparent photovoltaic devices, or photonic crystals and in smart materials applications such as environmental, pharmaceutical, and medical sensors, reinforcing its influence as an essential material and providing potential growth opportunities for the market. Moreover, inorganic glass is the only material that is 100% recyclable and can incorporate other industrial offscourings and/or residues to be used as raw materials. Over time, inorganic glass experienced an extensive range of fabrication techniques, from traditional melting-quenching (with an immense diversity of protocols) to chemical vapor deposition (CVD), physical vapor deposition (PVD), and wet chemistry routes as sol-gel and solvothermal processes. Additive manufacturing (AM) was recently added to the list. Bulks (3D), thin/thick films (2D), flexible glass (2D), powders (2D), fibers (1D), and nanoparticles (NPs) (0D) are examples of possible inorganic glass architectures able to integrate smart materials and opto-electronic devices, leading to added-value products in a wide range of markets. In this review, selected examples of inorganic glasses in areas such as: (i) magnetic glass materials, (ii) solar cells and transparent photovoltaic devices, (iii) photonic crystal, and (iv) smart materials are presented and discussed.
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Affiliation(s)
- Daniel Alves Barcelos
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- CQE, Centro de Química Estrutural, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Diana C. Leitao
- INESC Microsistemas e Nanotecnologias, R. Alves Redol 9, 1000-029 Lisboa, Portugal;
- Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Laura C. J. Pereira
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2685-066 Bobadela LRS, Portugal;
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2685-066 Bobadela LRS, Portugal
| | - Maria Clara Gonçalves
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- CQE, Centro de Química Estrutural, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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11
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Silva RAL, Santos R, Andrade MM, Santos IC, Coutinho JT, Pereira LCJ, Waerenborgh JC, Vieira BJC, Cirera J, Ruiz E, Almeida M, Belo D. [Co/Fe(α-Alkyl-tpdt) 2] x−: Alkyl-Substituted Cobalt and Iron Bis-dithiolenethiophenic Complexes. Inorg Chem 2020; 59:9261-9269. [DOI: 10.1021/acs.inorgchem.0c01154] [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: 11/30/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Jordi Cirera
- Departament de Quı́mica Inorgànica i Orgànica, Institut de Quı́mica Teòrica i Computacional, Diagonal 645, 08028 Barcelona, Spain
| | - Eliseo Ruiz
- Departament de Quı́mica Inorgànica i Orgànica, Institut de Quı́mica Teòrica i Computacional, Diagonal 645, 08028 Barcelona, Spain
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12
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Lopes G, Gonçalves AC, da Gama V, Simão D, Santos IC, Pereira LCJ, Almeida M, Rabaça S. Radical Cation Salts of Cyanobenzene‐Ethylenedithio‐TTF Electron Donors with Halide (Cu and Hg) Binuclear Anions. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900146] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gonçalo Lopes
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
| | - Ana Cristina Gonçalves
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
| | - Vasco da Gama
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
| | - Dulce Simão
- Centro de Química Estrutural Instituto Superior Técnico Universidade de Lisboa 1049‐001 Lisboa Portugal
| | - Isabel Cordeiro Santos
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
| | - Laura C. J. Pereira
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
| | - Manuel Almeida
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
| | - Sandra Rabaça
- C2TN, Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Universidade de Lisboa E.N. 10 ao km 139,7 2695‐066 Bobadela LRS Portugal
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13
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Coutinho JT, Perfetti M, Baldoví JJ, Antunes MA, Hallmen PP, Bamberger H, Crassee I, Orlita M, Almeida M, van Slageren J, Pereira LCJ. Spectroscopic Determination of the Electronic Structure of a Uranium Single-Ion Magnet. Chemistry 2019; 25:1758-1766. [PMID: 30403293 DOI: 10.1002/chem.201805090] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 10/09/2018] [Indexed: 11/09/2022]
Abstract
Early actinide ions have large spin-orbit couplings and crystal field interactions, leading to large anisotropies. The success in using actinides as single-molecule magnets has so far been modest, underlining the need for rational strategies. Indeed, the electronic structure of actinide single-molecule magnets and its relation to their magnetic properties remains largely unexplored. A uranium(III) single-molecule magnet, [UIII {SiMe2 NPh}3 -tacn)(OPPh3 )] (tacn=1,4,7-triazacyclononane), has been investigated by means of a combination of magnetic, spectroscopic and theoretical methods to elucidate the origin of its static and dynamic magnetic properties.
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Affiliation(s)
- Joana T Coutinho
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Mauro Perfetti
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.,Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - José J Baldoví
- Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Maria A Antunes
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Philipp P Hallmen
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Heiko Bamberger
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Iris Crassee
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL, 25 Avenue des Martyrs, 38042, Grenoble, France
| | - Milan Orlita
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL, 25 Avenue des Martyrs, 38042, Grenoble, France.,Institute of Physics, Charles University, Ke Karlovu 5, 12116, Praha 2, Czech Republic
| | - Manuel Almeida
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Joris van Slageren
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Laura C J Pereira
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
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14
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Lopes G, Gama V, Simão D, Santos IC, Lopes EB, Pereira LCJ, Almeida M, Rabaça S. Structural relations in (1 : 1) and (2 : 1) cyanobenzene-ethylenedithio-TTF radical salts; the role of CN⋯H interactions. CrystEngComm 2019. [DOI: 10.1039/c9ce01214a] [Citation(s) in RCA: 5] [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: 11/21/2022]
Abstract
Radical cation salts of 4-CNB-EDT-TTF presenting CN⋯H pairing interactions, semiconducting properties and chains of antiferromagnetically coupled donor dimers.
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Affiliation(s)
- Gonçalo Lopes
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Vasco Gama
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Dulce Simão
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- P-1049-001 Lisboa
- Portugal
| | - Isabel C. Santos
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Elsa B. Lopes
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Laura C. J. Pereira
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Manuel Almeida
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Sandra Rabaça
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
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15
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Cruz TFC, Pereira LCJ, Waerenborgh JC, Veiros LF, Gomes PT. Hydroboration of terminal olefins with pinacolborane catalyzed by new 2-iminopyrrolyl iron(ii) complexes. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02319k] [Citation(s) in RCA: 6] [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: 01/01/2023]
Abstract
New Fe(ii) mono(2-iminopyrrolyl) complexes catalyze the hydroboration of terminal olefins with pinacolborane via a borane oxidative addition pathway.
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Affiliation(s)
- Tiago F. C. Cruz
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Laura C. J. Pereira
- C2TN-Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - João C. Waerenborgh
- C2TN-Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Luís F. Veiros
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Pedro T. Gomes
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
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16
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Coutinho JT, Pereira CCL, Marçalo J, Baldoví JJ, Almeida M, Monteiro B, Pereira LCJ. A magnetic study of a layered lanthanide hydroxide family: Ln 8(OH) 20Cl 4·nH 2O (Ln = Tb, Ho, Er). Dalton Trans 2018; 47:16211-16217. [PMID: 30387485 DOI: 10.1039/c8dt03672a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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
Three layered lanthanide hydroxides (LLHs), with the general formula Ln8(OH)20Cl4·nH2O (Ln = Tb (1), Ho (2), Er (3)), were prepared and magnetically characterized both as pure compounds and diluted within a yttrium diamagnetic matrix, LYH : xLn, LYH : 0.044Tb (1'), LYH : 0.045Ho (2'), and LYH : 0.065Er (3'). This study was complemented with theoretical calculations in order to understand the electronic configuration and the contributions to the slow relaxation behavior. In the pure compounds dominant 3D ferromagnetic interactions are observed, with a small magnetization hysteresis at 1.8 K for 1, while the magnetically diluted solid solutions display slow relaxation of magnetization at low temperatures.
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Affiliation(s)
- Joana T Coutinho
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal.
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17
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Cruz TFC, Lopes PS, Pereira LCJ, Veiros LF, Gomes PT. Hydroboration of Terminal Olefins with Pinacolborane Catalyzed by New Mono(2-Iminopyrrolyl) Cobalt(II) Complexes. Inorg Chem 2018; 57:8146-8159. [PMID: 29953212 DOI: 10.1021/acs.inorgchem.8b00568] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 5-substituted 2-aryliminopyrrolyl ligand precursors of the type 5-R-2-[ N-(2,6-diisopropylphenyl)formimino]-1 H-pyrrole (R = 2,6-Me2-C6H3 (1a), 2,4,6-iPr3-C6H2 (1b), 2,4,6-Ph3-C6H3 (1c; reported in this work), anthracen-9-yl (1d), CPh3 (1e; reported in this work)) were treated with K[N(SiMe3)2] in toluene to yield the respective 5-R-2-[ N-(2,6-diisopropylphenyl)formimino]pyrrolyl potassium salts 2a-e in high yields. The paramagnetic 15-electron Co(II) complexes of the type [Co{κ2 N,N'-5-R-NC4H2-2-C(H)═N(2,6-iPr2-C6H3)}(Py)Cl] (3a-e; Py = pyridine) were prepared by salt metathesis of CoCl2(Py)4 with the respective potassium salts 2a-e in moderate to good yields. When the CoCl2(THF)1.5 precursor was combined with the in situ prepared sodium salt of ligand precursor 1b, the trinuclear complex [Co{κ2 N, N'-5-(2,4,6-iPr3-C6H2)-NC4H2-2-C(H)═N(2,6-iPr2-C6H3)}(μ-Cl)]2[(μ-Cl)2Co(THF)2] (4) was obtained in high yields. Complexes 3a-e have high-spin electronic configurations both in solution and in the solid state. X-ray diffraction studies of complexes 3a,e confirmed distorted tetrahedral coordination geometries. Complex 4, on the other hand, is a linear trinuclear Co(II)-Co(II)-Co(II) complex with two terminal distorted tetrahedral four-coordinate sites and a central octahedral six-coordinate site, all in the high-spin state, S = 3/2, as confirmed by the magnetization measurements and DFT calculations. Solid-state magnetic measurements in both complexes 3a and 4 point to paramagnetic behavior with a significant contribution of spin-orbit coupling. Additionally, intramolecular antiferromagnetic coupling of the adjacent cobalt atoms is observed in 4. The Co(II) family 3a-d, on activation with K(HBEt3), catalyzed the hydroboration of several α-olefins with pinacolborane, in good to high yields (50-80%). This system almost exclusively yielded the anti-Markovnikov (a-Mk) addition product, except when styrene was used, where the selectivity in the Markovnikov (Mk) product increased with increasing steric bulkiness of the 5-R-2-iminopyrrolyl substituent, with the a-Mk:Mk molar ratio varying from 2.33:1 (3a, R = 2,6-Me2-C6H3) to 0.75:1 (3c, R = 2,4,6-Ph3-C6H3). Preliminary mechanistic studies indicate that the activation by K(HBEt3) gave rise to a Co(I) species, the catalyst system likely following an oxidative addition pathway.
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Affiliation(s)
- Tiago F C Cruz
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Patrícia S Lopes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Laura C J Pereira
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico , Universidade de Lisboa , 2695-066 Bobadela LRS , Portugal
| | - Luís F Veiros
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Pedro T Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
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18
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Vieira BJC, da Gama V, Santos IC, Pereira LCJ, Bandeira NAG, Waerenborgh JC. Magnetic and structural correlations in [Fe(nsal2trien)] salts: the role of cation–anion interactions in the spin crossover phenomenon. CrystEngComm 2018. [DOI: 10.1039/c8ce00275d] [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: 11/21/2022]
Abstract
Cation–anion and cation–solvent–anion interactions determine the SCO behaviour of six [FeIII(nsal2trien)] salts.
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Affiliation(s)
- Bruno J. C. Vieira
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Vasco da Gama
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Isabel C. Santos
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Nuno A. G. Bandeira
- Institute of Chemical Research of Catalonia (ICIQ)
- 16-43007 Tarragona
- Spain
- Centro de Química Estrutural – Instituto Superior Técnico
- Universidade de Lisboa
| | - João C. Waerenborgh
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
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19
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Ramos Silva M, Coutinho JT, Pereira LCJ, Martín-Ramos P, Waerenborgh JC. Synthesis, structure and physical properties of a low dimensional compound. Spectrochim Acta A Mol Biomol Spectrosc 2017; 172:9-13. [PMID: 27374318 DOI: 10.1016/j.saa.2016.06.037] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 06/20/2016] [Accepted: 06/23/2016] [Indexed: 05/25/2023]
Abstract
The crystal structure of (μ3-oxo)hexakis(cyanoacetato-κO,O')(cyanoacetato-κO)diaquatriiron(III) cyanoacetic acid shows the formation of trinuclear complexes in a hydrogen-bond network that bonds all the molecules in a 3D arrangement. For this complex, within whose clusters the whole magnetic interaction takes place, 57Fe Mössbauer spectroscopy shows that the Fe cations are in the S=5/2 state in the temperature range 2-295K. The asymmetric broadening of the absorption peaks below 80K is consistent with strong antiferromagnetic interactions between the metal spins. The magnetization measurements also show the antiferromagnetic character of the spin ensemble and an ST=1/2 magnetic ground state typical of triangular systems with similar J between Fe-Fe pairs.
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Affiliation(s)
- Manuela Ramos Silva
- CFisUC, Department of Physics, University of Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal.
| | - Joana T Coutinho
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Laura C J Pereira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Pablo Martín-Ramos
- CFisUC, Department of Physics, University of Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal; Higher Polytechnic School of Huesca, University of Zaragoza, Ctra. Cuarte s/n, 22071 Huesca, Spain
| | - João C Waerenborgh
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
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20
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Andrade MM, Silva RAL, Santos IC, Lopes EB, Rabaça S, Pereira LCJ, Coutinho JT, Telo JP, Rovira C, Almeida M, Belo D. Gold and nickel alkyl substituted bis-thiophenedithiolene complexes: anionic and neutral forms. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00447d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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 effect of substituents on the magnetic and transport properties is assessed for Au and Ni alkyl substituted bisthiophenedithiolates.
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21
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Oliveira S, Santos IC, Lopes EB, Coutinho JT, Pereira LCJ, Belo D, Rabaça S, Almeida M. Charge‐Transfer Salts Based on a Dissymmetrical Cyano‐Substituted Tetrathiafulvalene Donor. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501343] [Citation(s) in RCA: 10] [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: 11/10/2022]
Affiliation(s)
- Sandrina Oliveira
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
| | - Isabel C. Santos
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049‐001 Lisboa, Portugal
| | - Elsa B. Lopes
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
| | - Joana T. Coutinho
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
| | - Laura C. J. Pereira
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
| | - Dulce Belo
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
| | - Sandra Rabaça
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
| | - Manuel Almeida
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695‐066 Bobadela LRS, Portugal http://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_srabaca.htmhttp://www.ctn.tecnico.ulisboa.pt/cvs/qui/uk_cv_malmeida.htm
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22
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Tsvetkov M, Milanova M, Pereira LCJ, Waerenborgh JC, Cherkezova-Zheleva Z, Zaharieva J, Mitov I. Magnetic properties of binary and ternary mixed metal oxides NiFe2O4 and Zn0.5Ni0.5Fe2O4 doped with rare earths by sol—gel synthesis. Chemical Papers 2016. [DOI: 10.1515/chempap-2016-0097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe spinel-type ferrites NiFe
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23
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Antunes MA, Coutinho JT, Santos IC, Marçalo J, Almeida M, Baldoví JJ, Pereira LCJ, Gaita-Ariño A, Coronado E. A Mononuclear Uranium(IV) Single-Molecule Magnet with an Azobenzene Radical Ligand. Chemistry 2015; 21:17817-26. [PMID: 26536849 DOI: 10.1002/chem.201503133] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [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: 08/08/2015] [Revised: 09/24/2015] [Indexed: 11/07/2022]
Abstract
A tetravalent uranium compound with a radical azobenzene ligand, namely, [{(SiMe2 NPh)3 -tacn}U(IV) (η(2) -N2 Ph2 (.) )] (2), was obtained by one-electron reduction of azobenzene by the trivalent uranium compound [U(III) {(SiMe2 NPh)3 -tacn}] (1). Compound 2 was characterized by single-crystal X-ray diffraction and (1) H NMR, IR, and UV/Vis/NIR spectroscopy. The magnetic properties of 2 and precursor 1 were studied by static magnetization and ac susceptibility measurements, which for the former revealed single-molecule magnet behaviour for the first time in a mononuclear U(IV) compound, whereas trivalent uranium compound 1 does not exhibit slow relaxation of the magnetization at low temperatures. A first approximation to the magnetic behaviour of these compounds was attempted by combining an effective electrostatic model with a phenomenological approach using the full single-ion Hamiltonian.
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Affiliation(s)
- Maria A Antunes
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS (Portugal)
| | - Joana T Coutinho
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS (Portugal)
| | - Isabel C Santos
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS (Portugal)
| | - Joaquim Marçalo
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS (Portugal)
| | - Manuel Almeida
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS (Portugal)
| | - José J Baldoví
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna (Spain)
| | - Laura C J Pereira
- C2TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS (Portugal).
| | - Alejandro Gaita-Ariño
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna (Spain).
| | - Eugenio Coronado
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna (Spain).
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24
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Soares PIP, Lochte F, Echeverria C, Pereira LCJ, Coutinho JT, Ferreira IMM, Novo CMM, Borges JPMR. Thermal and magnetic properties of iron oxide colloids: influence of surfactants. Nanotechnology 2015; 26:425704. [PMID: 26421876 DOI: 10.1088/0957-4484/26/42/425704] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Iron oxide nanoparticles (NPs) have been extensively studied in the last few decades for several biomedical applications such as magnetic resonance imaging, magnetic drug delivery and hyperthermia. Hyperthermia is a technique used for cancer treatment which consists in inducing a temperature of about 41-45 °C in cancerous cells through magnetic NPs and an external magnetic field. Chemical precipitation was used to produce iron oxide NPs 9 nm in size coated with oleic acid and trisodium citrate. The influence of both stabilizers on the heating ability and in vitro cytotoxicity of the produced iron oxide NPs was assessed. Physicochemical characterization of the samples confirmed that the used surfactants do not change the particles' average size and that the presence of the surfactants has a strong effect on both the magnetic properties and the heating ability. The heating ability of Fe3O4 NPs shows a proportional increase with the increase of iron concentration, although when coated with trisodium citrate or oleic acid the heating ability decreases. Cytotoxicity assays demonstrated that both pristine and trisodium citrate Fe3O4 samples do not reduce cell viability. However, oleic acid Fe3O4 strongly reduces cell viability, more drastically in the SaOs-2 cell line. The produced iron oxide NPs are suitable for cancer hyperthermia treatment and the use of a surfactant brings great advantages concerning the dispersion of NPs, also allowing better control of the hyperthermia temperature.
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Affiliation(s)
- Paula I P Soares
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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25
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Silva RAL, Santos IC, Wright J, Coutinho JT, Pereira LCJ, Lopes EB, Rabaça S, Vidal-Gancedo J, Rovira C, Almeida M, Belo D. Dithiophene-TTF Salts; New Ladder Structures and Spin-Ladder Behavior. Inorg Chem 2015; 54:7000-6. [DOI: 10.1021/acs.inorgchem.5b01013] [Citation(s) in RCA: 7] [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: 11/30/2022]
Affiliation(s)
- Rafaela A. L. Silva
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
| | - Isabel C. Santos
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
- Centro
de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, P-1049-001 Lisboa, Portugal
| | - Jonathan Wright
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Joana T. Coutinho
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
| | - Laura C. J. Pereira
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
| | - Elsa B. Lopes
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
| | - Sandra Rabaça
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
| | - José Vidal-Gancedo
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus UAB, E-08193 Bellaterra, Spain
| | - Concepció Rovira
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus UAB, E-08193 Bellaterra, Spain
| | - Manuel Almeida
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
| | - Dulce Belo
- C2TN,
Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional
10, P-2695-066 Bobadela
LRS, Portugal
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26
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Monteiro B, Coutinho JT, Pereira CCL, Pereira LCJ, Marçalo J, Almeida M, Baldoví JJ, Coronado E, Gaita-Ariño A. Magnetic Properties of the Layered Lanthanide Hydroxide Series YxDy8-x(OH)20Cl4·6H2O: From Single Ion Magnets to 2D and 3D Interaction Effects. Inorg Chem 2015; 54:1949-57. [DOI: 10.1021/ic502839c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Bernardo Monteiro
- C2TN, Instituto Superior Técnico/CFMCUL, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Joana T. Coutinho
- C2TN, Instituto Superior Técnico/CFMCUL, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Cláudia C. L. Pereira
- C2TN, Instituto Superior Técnico/CFMCUL, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Laura C. J. Pereira
- C2TN, Instituto Superior Técnico/CFMCUL, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Joaquim Marçalo
- C2TN, Instituto Superior Técnico/CFMCUL, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Manuel Almeida
- C2TN, Instituto Superior Técnico/CFMCUL, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - José J. Baldoví
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán
2, E-46980 Paterna, Spain
| | - Eugenio Coronado
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán
2, E-46980 Paterna, Spain
| | - Alejandro Gaita-Ariño
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán
2, E-46980 Paterna, Spain
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27
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Vieira BJC, Dias JC, Santos IC, Pereira LCJ, da Gama V, Waerenborgh JC. Thermal Hysteresis in a Spin-Crossover FeIII Quinolylsalicylaldimine Complex, FeIII(5-Br-qsal)2Ni(dmit)2·solv: Solvent Effects. Inorg Chem 2015; 54:1354-62. [DOI: 10.1021/ic502278d] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bruno J. C. Vieira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior
Técnico, Universidade de Lisboa, 2695-066 Bobadela
LRS, Portugal
| | - João C. Dias
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior
Técnico, Universidade de Lisboa, 2695-066 Bobadela
LRS, Portugal
| | - Isabel C. Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior
Técnico, Universidade de Lisboa, 2695-066 Bobadela
LRS, Portugal
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior
Técnico, Universidade de Lisboa, 2695-066 Bobadela
LRS, Portugal
| | - Vasco da Gama
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior
Técnico, Universidade de Lisboa, 2695-066 Bobadela
LRS, Portugal
| | - João C. Waerenborgh
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior
Técnico, Universidade de Lisboa, 2695-066 Bobadela
LRS, Portugal
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28
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Silva MR, Martín-Ramos P, Coutinho JT, Pereira LCJ, Lavín V, Martín IR, Silva PSP, Martín-Gil J. Slow magnetic relaxation mechanisms in erbium SIMs. Dalton Trans 2015; 44:1264-72. [PMID: 25415492 DOI: 10.1039/c4dt02767a] [Citation(s) in RCA: 11] [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: 11/21/2022]
Abstract
The magnetic properties of two similar Er(3+) complexes have been investigated. [Er(tpm)3(bipy)] (Htpm = 1,1,1-trifluoro-5,5-dimethyl-2,4-hexanedione and bipy = 2,2'-bipyridine) displays thermally activated slow relaxation of magnetisation under a zero direct-current (DC) field. Under an applied HDC field of 1000 G, [Er(tpm)3(bipy)] exhibits two thermally activated processes with energy barriers of 9 and 40 K, while [Er(tfa)3(bipy)] (Htfa = 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione) shows only one activated process with a barrier of 15 K. Both compounds are luminescent in the solid state, emitting in the near IR region.
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Affiliation(s)
- M Ramos Silva
- CEMDRX, Physics Department, Universidade de Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal.
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29
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Martín-Ramos P, Coutinho JT, Ramos Silva M, Pereira LCJ, Lahoz F, da Silva PSP, Lavín V, Martín-Gil J. Slow magnetic relaxation and photoluminescent properties of a highly coordinated erbium(iii) complex with dibenzoylmethane and 2,2′-bipyridine. NEW J CHEM 2015. [DOI: 10.1039/c4nj01828a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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 luminescence and magnetic properties of a bifunctional highly coordinated Er(iii) β-diketonate complex are presented, together with its synthesis and structure.
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Affiliation(s)
- Pablo Martín-Ramos
- CEMDRX
- Physics Department
- Universidade de Coimbra
- P-3004-516 Coimbra
- Portugal
| | | | | | | | - Fernando Lahoz
- Department of Physics
- MALTA Consolider Team, and Institute of Advances Studies in Atomic, Molecular and Photonics. Universidad de La Laguna
- Santa Cruz de Tenerife
- Spain
| | | | - Víctor Lavín
- Department of Physics
- MALTA Consolider Team, and Institute of Advances Studies in Atomic, Molecular and Photonics. Universidad de La Laguna
- Santa Cruz de Tenerife
- Spain
| | - Jesús Martín-Gil
- Advanced Materials Laboratory
- ETSIIAA
- Universidad de Valladolid
- 34004 Palencia
- Spain
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30
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Pereira LCJ, Camp C, Coutinho JT, Chatelain L, Maldivi P, Almeida M, Mazzanti M. Correction to Single-Molecule-Magnet Behavior in Mononuclear Homoleptic Tetrahedral Uranium(III) Complexes. Inorg Chem 2014. [DOI: 10.1021/ic502703a] [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: 11/28/2022]
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31
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Pereira LCJ, Camp C, Coutinho JT, Chatelain L, Maldivi P, Almeida M, Mazzanti M. Single-Molecule-Magnet Behavior in Mononuclear Homoleptic Tetrahedral Uranium(III) Complexes. Inorg Chem 2014; 53:11809-11. [DOI: 10.1021/ic501520c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Laura C. J. Pereira
- C2TN, Instituto
Superior Técnico, Universidade de Lisboa/CFMCUL, Estrada
Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Clément Camp
- Univ. Grenoble Alpes, INAC-SCIB, RICC, and CEA, INAC-SCIB, , F-38000 Grenoble, France
| | - Joana T. Coutinho
- C2TN, Instituto
Superior Técnico, Universidade de Lisboa/CFMCUL, Estrada
Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Lucile Chatelain
- Univ. Grenoble Alpes, INAC-SCIB, RICC, and CEA, INAC-SCIB, , F-38000 Grenoble, France
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Pascale Maldivi
- Univ. Grenoble Alpes, INAC-SCIB, RICC, and CEA, INAC-SCIB, , F-38000 Grenoble, France
| | - Manuel Almeida
- C2TN, Instituto
Superior Técnico, Universidade de Lisboa/CFMCUL, Estrada
Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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32
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Neves AIS, Santos IC, Coutinho JT, Pereira LCJ, Henriques RT, Lopes EB, Alves H, Almeida M, Belo D. 5‐Methylthiophene‐2,3‐dithiolene Transition Metal Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402048] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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)
- Ana I. S. Neves
- Instituto de Telecomunicações, Polo de Lisboa, Av. Rovisco Pais, 1049‐001 Lisboa, Portugal
| | - Isabel C. Santos
- C2TN/CFMCUL, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, 2695‐066 Bobadela LRS, Portugal, http://www.itn.pt
| | - Joana T. Coutinho
- C2TN/CFMCUL, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, 2695‐066 Bobadela LRS, Portugal, http://www.itn.pt
| | - Laura C. J. Pereira
- C2TN/CFMCUL, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, 2695‐066 Bobadela LRS, Portugal, http://www.itn.pt
| | - Rui T. Henriques
- Instituto de Telecomunicações, Polo de Lisboa, Av. Rovisco Pais, 1049‐001 Lisboa, Portugal
| | - Elsa B. Lopes
- C2TN/CFMCUL, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, 2695‐066 Bobadela LRS, Portugal, http://www.itn.pt
| | - H. Alves
- INESC MN, R. Alves Redol 9, 1000‐029 Lisboa, Portugal
| | - Manuel Almeida
- C2TN/CFMCUL, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, 2695‐066 Bobadela LRS, Portugal, http://www.itn.pt
| | - Dulce Belo
- C2TN/CFMCUL, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, 2695‐066 Bobadela LRS, Portugal, http://www.itn.pt
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33
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Coutinho JT, Antunes MA, Pereira LCJ, Marçalo J, Almeida M. Zero-field slow magnetic relaxation in a uranium(iii) complex with a radical ligand. Chem Commun (Camb) 2014; 50:10262-4. [DOI: 10.1039/c4cc04486j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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
Single-molecule-magnet behaviour in [U(TpMe2)2(bipy˙)], a U(iii) complex with a radical bipyridine ligand, having magnetic contributions from both the metal and the ligand.
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Affiliation(s)
- Joana T. Coutinho
- Centro de Ciências e Tecnologias Nucleares (C2TN)/CFMCUL
- Instituto Superior Técnico
- Universidade de Lisboa
- , Portugal
| | - Maria A. Antunes
- Centro de Ciências e Tecnologias Nucleares (C2TN)/CFMCUL
- Instituto Superior Técnico
- Universidade de Lisboa
- , Portugal
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares (C2TN)/CFMCUL
- Instituto Superior Técnico
- Universidade de Lisboa
- , Portugal
| | - Joaquim Marçalo
- Centro de Ciências e Tecnologias Nucleares (C2TN)/CFMCUL
- Instituto Superior Técnico
- Universidade de Lisboa
- , Portugal
| | - Manuel Almeida
- Centro de Ciências e Tecnologias Nucleares (C2TN)/CFMCUL
- Instituto Superior Técnico
- Universidade de Lisboa
- , Portugal
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34
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Girginova PI, Pereira LCJ, Coutinho JT, Santos IC, Almeida M. Slow magnetic relaxation in lanthanide ladder type coordination polymers. Dalton Trans 2014; 43:1897-905. [DOI: 10.1039/c3dt52748d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [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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35
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Soares PIP, Alves AMR, Pereira LCJ, Coutinho JT, Ferreira IMM, Novo CMM, Borges JPMR. Effects of surfactants on the magnetic properties of iron oxide colloids. J Colloid Interface Sci 2013; 419:46-51. [PMID: 24491328 DOI: 10.1016/j.jcis.2013.12.045] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [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: 10/28/2013] [Revised: 12/18/2013] [Accepted: 12/19/2013] [Indexed: 02/02/2023]
Abstract
Iron oxide nanoparticles are having been extensively investigated for several biomedical applications such as hyperthermia and magnetic resonance imaging. However, one of the biggest problems of these nanoparticles is their aggregation. Taking this into account, in this study the influence of three different surfactants (oleic acid, sodium citrate and Triton X-100) each one with various concentrations in the colloidal solutions stability was analyzed by using a rapid and facile method, the variation in the optical absorbance along time. The synthesized nanoparticles through chemical precipitation showed an average size of 9 nm and a narrow size distribution. X-ray diffraction pattern and Fourier Transform Infrared analysis confirmed the presence of pure magnetite. SQUID measurements showed superparamagnetic properties with a blocking temperature around 155 K. In addition it was observed that neither sodium citrate nor Triton X-100 influences the magnetic properties of the nanoparticles. On the other hand, oleic acid in a concentration of 64 mM decreases the saturation magnetization from 67 to 45 emu/g. Oleic acid exhibits a good performance as stabilizer of the iron oxide nanoparticles in an aqueous solution for 24h, for concentrations that lead to the formation of the double layer.
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Affiliation(s)
- Paula I P Soares
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana M R Alves
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Laura C J Pereira
- IST/CTN, Instituto Superior Técnico, UTL, Estrada Nacional 10, ao km 139,7, 2695-066 Bobadela LRS, Portugal
| | - Joana T Coutinho
- IST/CTN, Instituto Superior Técnico, UTL, Estrada Nacional 10, ao km 139,7, 2695-066 Bobadela LRS, Portugal
| | - Isabel M M Ferreira
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Carlos M M Novo
- Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, IHMT/UNL, 1349-008 Lisboa, Portugal
| | - João P M R Borges
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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36
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Martín-Ramos P, Ramos Silva M, Coutinho JT, Pereira LCJ, Chamorro-Posada P, Martín-Gil J. Single-Ion Magnetism in a Luminescent Er3+β-Diketonato Complex with Multiple Relaxation Mechanisms. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301076] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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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37
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Monteiro B, Pereira CCL, Coutinho JT, Pereira LCJ, Marçalo J, Almeida M. A 2D Layered Lanthanide Hydroxide Showing Slow Relaxation of Magnetization – Dy
8
(OH)
20
Cl
4
·6H
2
O (Eur. J. Inorg. Chem. 29/2013). Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201390129] [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: 11/09/2022]
Affiliation(s)
- Bernardo Monteiro
- ITN/IST, Instituto Superior Técnico/CFMCUL, E.N. 10, 2686‐953 Sacavém, Portugal, http://www.ist.utl.pt
| | - Cláudia C. L. Pereira
- ITN/IST, Instituto Superior Técnico/CFMCUL, E.N. 10, 2686‐953 Sacavém, Portugal, http://www.ist.utl.pt
| | - Joana T. Coutinho
- ITN/IST, Instituto Superior Técnico/CFMCUL, E.N. 10, 2686‐953 Sacavém, Portugal, http://www.ist.utl.pt
| | - Laura C. J. Pereira
- ITN/IST, Instituto Superior Técnico/CFMCUL, E.N. 10, 2686‐953 Sacavém, Portugal, http://www.ist.utl.pt
| | - Joaquim Marçalo
- ITN/IST, Instituto Superior Técnico/CFMCUL, E.N. 10, 2686‐953 Sacavém, Portugal, http://www.ist.utl.pt
| | - Manuel Almeida
- ITN/IST, Instituto Superior Técnico/CFMCUL, E.N. 10, 2686‐953 Sacavém, Portugal, http://www.ist.utl.pt
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38
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Monteiro B, Pereira CCL, Coutinho JT, Pereira LCJ, Marçalo J, Almeida M. A 2D Layered Lanthanide Hydroxide Showing Slow Relaxation of Magnetization – Dy
8
(OH)
20
Cl
4
·6H
2
O. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301161] [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: 11/12/2022]
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39
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Monteiro B, Pereira CCL, Coutinho JT, Pereira LCJ, Marçalo J, Almeida M. A 2D Layered Lanthanide Hydroxide Showing Slow Relaxation of Magnetization - Dy8(OH)20Cl4·6H2O. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300793] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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40
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Cerdeira AC, Belo D, Rabaça S, Pereira LCJ, Coutinho JT, Simão D, Henriques RT, Jeannin O, Fourmigué M, Almeida M. Heterodimetallic Structures Based on Cyano-Substituted Bis(dithiolene) Complexes and Ni and Cu Cyclam Cations. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300490] [Citation(s) in RCA: 8] [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: 11/08/2022]
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41
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Yuste-Vivas C, Coutinho JT, Pereira LCJ, Silva MR. catena-Poly[[(1,10-phenanthroline-κ(2) N,N')copper(II)]-μ-2,2'-iminodibenzoato-κ(4) O,O':O'',O''']. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m255-6. [PMID: 23723768 PMCID: PMC3647802 DOI: 10.1107/s1600536813009203] [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] [Received: 02/15/2013] [Accepted: 04/04/2013] [Indexed: 12/02/2022]
Abstract
The structure of the title compound, [Cu(C14H9NO4)(C12H8N2)]n, consists of zigzag polymeric chains along the c axis. The asymmetric unit contains one CuII atom which is coordinated by one 2,2′-iminodibenzoate ligand and a one phenanthroline unit. Two intramolecular N—H⋯O hydrogen bonds occur. The supramolecular structure is characterized by weak C—H⋯O hydrogen bonds and π–π stacking interactions, forming a three-dimensional supramolecular network. The shortest centroid–centroid distances between neighbouring phenanthroline aromatic rings and 2,2′-iminodibenzoate rings are 3.684 (1) and 3.640 Å, respectively. The shortest intrachain Cu⋯Cu distance is 7.2885 (9) and the shortest Cu⋯Cu distance between Cu atoms in different chains is 7.1103 (6) Å.
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42
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Silva RAL, Neves AIS, Lopes EB, Santos IC, Coutinho JT, Pereira LCJ, Rovira C, Almeida M, Belo D. (α-DT-TTF)2[Au(mnt)2]: A Weakly Disordered Molecular Spin-Ladder System. Inorg Chem 2013; 52:5300-6. [DOI: 10.1021/ic400246y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rafaela A. L. Silva
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
| | - Ana I. S. Neves
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
| | - Elsa B. Lopes
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
| | - Isabel C. Santos
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, P-1049-001 Lisboa,
Portugal
| | - Joana T. Coutinho
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
| | - Laura C. J. Pereira
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
| | - Concepció Rovira
- Institut de Ciencia de Materials de Barcelona
(ICMAB-CSIC) and CIBER-BBN, Campus UAB,
E-08193 Bellaterra, Spain
| | - Manuel Almeida
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
| | - Dulce Belo
- Department
of Chemistry, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMCUL, Estrada
Nacional 10, P-2686-953 Sacavém, Portugal
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43
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Vieira BJC, Coutinho JT, Santos IC, Pereira LCJ, Waerenborgh JC, da Gama V. [Fe(nsal2trien)]SCN, a New Two-Step Iron(III) Spin Crossover Compound, with Symmetry Breaking Spin-State Transition and an Intermediate Ordered State. Inorg Chem 2013; 52:3845-50. [DOI: 10.1021/ic302533b] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Bruno J. C. Vieira
- UCQR, IST/ITN, Instituto Superior
Técnico, Universidade Técnica de Lisboa, CFMC-UL, 2686-953
Sacavém, Portugal
| | - Joana T. Coutinho
- UCQR, IST/ITN, Instituto Superior
Técnico, Universidade Técnica de Lisboa, CFMC-UL, 2686-953
Sacavém, Portugal
| | - Isabel C. Santos
- UCQR, IST/ITN, Instituto Superior
Técnico, Universidade Técnica de Lisboa, CFMC-UL, 2686-953
Sacavém, Portugal
| | - Laura C. J. Pereira
- UCQR, IST/ITN, Instituto Superior
Técnico, Universidade Técnica de Lisboa, CFMC-UL, 2686-953
Sacavém, Portugal
| | - João C. Waerenborgh
- UCQR, IST/ITN, Instituto Superior
Técnico, Universidade Técnica de Lisboa, CFMC-UL, 2686-953
Sacavém, Portugal
| | - Vasco da Gama
- UCQR, IST/ITN, Instituto Superior
Técnico, Universidade Técnica de Lisboa, CFMC-UL, 2686-953
Sacavém, Portugal
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44
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Antunes MA, Santos IC, Bolvin H, Pereira LCJ, Mazzanti M, Marçalo J, Almeida M. Crystal structure diversity in the bis[hydrotris(3,5-dimethylpyrazolyl)borate]iodouranium(iii) complex: from neutral to cationic forms. Dalton Trans 2013; 42:8861-7. [DOI: 10.1039/c3dt50753j] [Citation(s) in RCA: 24] [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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45
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Silvestre AJ, Pereira LCJ, Nunes MR, Monteiro OC. Ferromagnetic order in aged Co-doped TiO2 anatase nanopowders. J Nanosci Nanotechnol 2012; 12:6850-6854. [PMID: 22962834 DOI: 10.1166/jnn.2012.4550] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This paper reports on the ferromagnetic properties of aged Ti(1-x)CoxO(2-delta) anatase nanopowders with different Co contents (0.03 < or = x < or = 0.10). It is shown for the first time that aged Co:TiO2 anatase samples retain rather high values of magnetization (M), remanence (Mr) and coercivity (Hc) which provide strong evidence for a preserved long-range ferromagnetic order. Room temperature M, Mr and Hc values were measured in the ranges of [0.05, 0.79] microB/Co, [0.044, 0.096] microB/Co and [366.7,494.8]Oe, respectively, which are in the same range as in general reported either for newly prepared thin films or nanoparticles.
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Affiliation(s)
- A J Silvestre
- Instituto Superior de Engenharia de Lisboa and ICEMS, R. Conselheiro Emídio Navarro 1, 1959-007 Lisboa, Portugal
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46
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Waerenborgh JC, Tsipis EV, Pereira LCJ, Avdeev M, Naumovich EN, Kharton VV. Magnetization, Mössbauer and isothermal dilatometric behavior of oxidized YBa(Co,Fe)4O7+δ. Dalton Trans 2012; 41:667-78. [DOI: 10.1039/c1dt11212k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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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47
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Coutinho JT, Antunes MA, Pereira LCJ, Bolvin H, Marçalo J, Mazzanti M, Almeida M. Single-ion magnet behaviour in [U(TpMe2)2I]. Dalton Trans 2012; 41:13568-71. [DOI: 10.1039/c2dt31421e] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [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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48
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Neves AIS, Santos IC, Pereira LCJ, Rovira C, Ruiz E, Belo D, Almeida M. Ni-2,3-thiophenedithiolate Anions in New Architectures: An In-Line Mixed-Valence Ni Dithiolene (Ni4-S12) Cluster. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100797] [Citation(s) in RCA: 11] [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: 11/08/2022]
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49
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Antunes MA, Pereira LCJ, Santos IC, Mazzanti M, Marçalo J, Almeida M. [U(TpMe2)2(bipy)]+: A Cationic Uranium(III) Complex with Single-Molecule-Magnet Behavior. Inorg Chem 2011; 50:9915-7. [DOI: 10.1021/ic200705p] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Maria A. Antunes
- Unidade de Ciências Químicas e Radiofarmacêuticas, Instituto Tecnológico e Nuclear/CFMCUL, P-2686-953 Sacavém, Portugal
| | - Laura C. J. Pereira
- Unidade de Ciências Químicas e Radiofarmacêuticas, Instituto Tecnológico e Nuclear/CFMCUL, P-2686-953 Sacavém, Portugal
| | - Isabel C. Santos
- Unidade de Ciências Químicas e Radiofarmacêuticas, Instituto Tecnológico e Nuclear/CFMCUL, P-2686-953 Sacavém, Portugal
| | - Marinella Mazzanti
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique, UMR-E 3 CEA/UJF, FRE3200 CNRS, INAC, CEA-Grenoble, F-38054 Grenoble Cedex 09, France
| | - Joaquim Marçalo
- Unidade de Ciências Químicas e Radiofarmacêuticas, Instituto Tecnológico e Nuclear/CFMCUL, P-2686-953 Sacavém, Portugal
| | - Manuel Almeida
- Unidade de Ciências Químicas e Radiofarmacêuticas, Instituto Tecnológico e Nuclear/CFMCUL, P-2686-953 Sacavém, Portugal
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50
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Silva JA, Pereira Magalhães A, Ramos Silva M, Sobral AJFN, Pereira LCJ. Diaqua-(6-bromo-picolinato-κN,O)(nitrato-κO,O)copper(II). Acta Crystallogr Sect E Struct Rep Online 2011; 67:m160. [PMID: 21522841 PMCID: PMC3051566 DOI: 10.1107/s160053681100064x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2010] [Accepted: 01/05/2011] [Indexed: 11/16/2022]
Abstract
In the monomeric title complex, [Cu(C6H3BrNO2)(NO3)(H2O)2], the CuII ion is coordinated by a bidentate 6-bromopicolinate ion, one nitrate ion and two water molecules in a geometry intermediate between five- and six-coordinate. Conventional O—H⋯O hydrogen bonds link the complex molecules, forming layers parallel to the ab plane.
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