0000000000054702

AUTHOR

Wdeson P. Barros

showing 25 related works from this author

Discrete trinuclear copper(II) compounds as building blocks: the influence of the peripheral substituents on the magnetic coupling in oxamato-bridged…

2014

Two new trinuclear copper(ii) complexes without end-capping ligands, (Bu4N)2[Cu(dmso)2{Cu(dnopba)(dmso)}2] () and (Bu4N)2[Cu(dmso)2{Cu(dcopba)(dmso)}2] () [dnopba = 4,5-dinitro-ortho-phenylenebis(oxamate), dcopba = 4,5-dichloro-ortho-phenylenebis(oxamate), Bu4N(+) = tetra-n-butylammonium and dmso = dimethylsulfoxide], were synthesized and their structures were determined by single crystal X-ray diffraction. The crystal structures of and consist of two outer bis(oxamato)(dmso)cuprate(ii) units which act as bidentate ligands toward a trans-bis(dmso)copper(ii) inner entity leading to centrosymmetric tricopper(ii) complexes with copper-copper separations across the oxamate bridges of 5.1916(3) …

Inorganic ChemistryCrystallographyDenticityLigandPhenyleneChemistryStereochemistryMoleculechemistry.chemical_elementCuprateCrystal structureCopperSquare pyramidal molecular geometryDalton transactions (Cambridge, England : 2003)
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Ligand Effects on the Structure and Magnetic Properties of Alternating Copper(II) Chains with 2,2′-Bipyrimidine- and Polymethyl-Substituted Pyrazolat…

2014

A novel series of heteroleptic copper(II) compounds of formulas {[Cu2(μ-H2O)(μ-pz)2(μ-bpm)(ClO4)(H2O)]ClO4·2H2O}n (1), {[Cu2(μ-H2O)(μ-3-Mepz)2(μ-bpm)](ClO4)2·2H2O}n (2), and {[Cu2(μ-OH)(μ-3,5-Me2pz)(μ-bpm)(H-3,5-Me2pz)2](ClO4)2}n (3) [bpm = 2,2'-bipyrimidine, Hpz = pyrazole, H-3-Mepz = 3-methylpyrazole, and H-3,5-Me2pz = 3,5-dimethylpyrazole] have been synthesized and structurally characterized by X-ray diffraction methods. The crystal structures of 1 and 2 consist of copper(II) chains with regular alternating bpm and bis(pyrazolate)(aqua) bridges, whereas that of 3 is made up of copper(II) chains with regular alternating bpm and (pyrazolate)(hydroxo) bridges. The copper centers are six- (1…

Inorganic ChemistryCrystallographychemistry.chemical_compoundchemistryOctahedronLigandStereochemistrychemistry.chemical_elementCrystal structurePhysical and Theoretical ChemistryPyrazoleCopperInorganic Chemistry
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Dicopper(II) Anthraquinophanes as Multielectron Reservoirs for Oxidation and Reduction: A Joint Experimental and Theoretical Study

2014

Two new dinuclear copper(II) metallacyclophanes with 1,4-disubstituted 9,10-anthraquinonebis(oxamate) bridging ligands are reported that can reversibly take and release electrons at the redox-active ligand and metal sites, respectively, to give the corresponding mono- and bis(semiquinonate and/or catecholate) Cu(II)2 species and mixed-valent Cu(II)/Cu(III) and high-valent Cu(III)2 ones. Density functional calculations allow us to give further insights on the dual ligand- and metal-based character of the redox processes in this novel family of antiferromagnetically coupled di- copper(II) anthraquinophanes. This unique ability for charge storage could be the basis for the development of new k…

Models MolecularInorganic chemistrychemistry.chemical_elementAnthraquinonesElectronsElectron010402 general chemistry01 natural sciencesRedoxCatalysisMetal[CHIM]Chemical SciencesComputingMilieux_MISCELLANEOUSSpintronics010405 organic chemistryChemistryLigandOrganic ChemistryOxidation reductionGeneral ChemistryCopper0104 chemical sciencesCrystallographyvisual_artvisual_art.visual_art_mediumOxidation-ReductionCopper
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Crystal Structure and Magnetic Properties of an Oxamato‐Bridged Heterobimetallic Tetranuclear [Ni II Cu II ] 2 Complex of the Rack Type

2017

Inorganic ChemistryRackNickelCrystallography010405 organic chemistryChemistrychemistry.chemical_elementCrystal structure010402 general chemistry01 natural sciencesCopper0104 chemical sciencesEuropean Journal of Inorganic Chemistry
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Study of the complex formation between the [Cu(bpca)]+ secondary building unit and the aromatic N donors 2,3,5,6-tetra(2-pyridyl)pyrazine (tppz) and …

2017

Two new complexes of the formula [{Cu(bpca)}2(μ-tppz)](NO3)2·5H2O (1) and [Cu(bpca)(H2O)(ClO4)(μ-bpp)Cu(bpca)(H2O)2]ClO4·H2O (2) [tppz = 2,3,5,6-tetra(2-pyridyl)pyrazine and bpp = 1,3-bis(4-pyridyl)propane] have been prepared by the reaction of the [Cu(bpca)]+ [Hbpca = bis(2-pyridylcarbonyl)imide] building block and the tppz and bpp N donors. An unusual coordination mode of the tppz ligand was observed in 1, which functions as a bis(bidentate) ligand to two copper(II) atoms each coordinated to a nitrogen atom of the pyrazine moiety and a pyridyl nitrogen atom. This compound presents a layered structure of alternating anionic (ca. 1.6 A) and cationic (ca. 10 A) slices, providing the opportun…

DenticityPyrazine010405 organic chemistryInorganic chemistrySupramolecular chemistryGeneral Chemistry010402 general chemistryCondensed Matter Physics01 natural sciences0104 chemical scienceschemistry.chemical_compoundPerchlorateCrystallographychemistryElectronic effectMoleculeMoietyGeneral Materials ScienceImideCrystEngComm
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Dicopper(II) metallacyclophanes with photoswitchable oligoacene spacers: a joint experimental and computational study on molecular magnetic photoswit…

2018

Dinuclear copper(II) complexes of the metallacyclophane-type, (nBu4N)4[Cu2(2,6-anba)2] (1) and (nBu4N)4[Cu2(1,5-naba)2]·4H2O (2) with photoactive 2,6-anthracene-(2,6-anba) and 1,5-naphthalenebis(oxamate) (1,5-naba) bridging ligands, are reported. They undergo a thermally reversible, solid-state photomagnetic (ON/OFF) switching between the moderately strong antiferromagnetically coupled dicopper(II) species and the corresponding magnetically uncoupled [4+4] photocycloaddition product. Density functional calculations give further insights on the intramolecular (“pseudo-bimolecular”) photocycloaddition reaction of the two facing 2,6-anthracene or 1,5-naphthalene spacers in this novel family of…

Spintronics010405 organic chemistryChemistryIntermetallicchemistry.chemical_elementOligoacenes010402 general chemistry01 natural sciencesCopper0104 chemical sciencesIonPhotochemical reactivityCrystallographyDensity functional calculationsIntramolecular forceMagnetic propertiesMaterials ChemistryAntiferromagnetismPhotochemical reactivityPhysical and Theoretical ChemistryCopper
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Metallosupramolecular approach toward multifunctional magnetic devices for molecular spintronics

2015

Abstract The work presented in this review constitutes a successful extension of our group's research on the chemistry and physics of dinuclear copper(II) metallacyclophanes with aromatic polyoxalamide ligands. The design and synthesis of metallacyclic complexes that contain multiple electro- and photoactive (either metal- or ligand-based) spin carriers and the study of their spectroscopic and magnetic properties as well as their redox and photochemical activity are of large interest in the multidisciplinary field of metallosupramolecular chemistry. In doing this, a ligand design approach has been followed which is based on the copper(II)-mediated self-assembly of bis(oxamato) bridging liga…

Spintronics010405 organic chemistryChemistryLigandMagnetismSupramolecular chemistryMolecular electronicsNanotechnology010402 general chemistryElectrochemistry01 natural sciences0104 chemical sciencesInorganic ChemistryMagnetochemistryMaterials ChemistryMolecule[CHIM]Chemical SciencesPhysical and Theoretical ChemistryComputingMilieux_MISCELLANEOUS
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Metamagnetic behaviour in a new Cu(ii)Re(iv) chain based on the hexachlororhenate(iv) anion

2014

A new chloro-bridged heterobimetallic Cu(ii)Re(iv) chain of formula {Cu(pyim)(Him)2ReCl6}n·MeCN (·MeCN) has been prepared and magnetostructurally characterised. Compound is the first example of the [Re(IV)Cl6](2-) anion acting as a metalloligand towards a paramagnetic metal ion.

ChemistryStereochemistryMetals and AlloysGeneral ChemistryCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsIonMetalCrystallographyParamagnetismChain (algebraic topology)visual_artMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumChemical Communications
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Self-assembly, binding ability and magnetic properties of dicopper(ii) pyrazolenophanes

2016

A novel series of dinuclear copper(II) pyrazolenophanes of the formula [Cu2(μ-4-Mepz)2(μ-ClO4)(ClO4)(bpm)2] (1), [Cu2(μ-pz)2(μ-H2O)(ClO4)(4,7-Me2phen)2]ClO4·H2O·CH3CN (2), [Cu2(μ-pz)2(μ-H2O)(ClO4)3/2(H2O)1/2(phen)2]2[Cu2(μ-pz)2(μ-ClO4)(ClO4)2(phen)2]·8H2O (3), and [Cu2(μ-pz)2(CH3CN)2(3,4,7,8-Me4phen)2](ClO4)2 (4) (Hpz = pyrazole, H-4-Mepz = 4-methylpyrazole, bpm = 2,2'-bipyrimidine, phen = 1,10-phenanthroline, 4,7-Me2phen = 4,7-dimethyl-1,10-phenanthroline, and 3,4,7,8-Me4phen = 3,4,7,8-tetramethyl-1,10-phenanthroline) have been synthesized and magneto-structurally investigated. The crystal structures of 1–4 contain bis(pyrazolate)(perchlorate)- (1 and 3), bis(pyrazolate)(aqua)- (2 and 3), …

Denticity010405 organic chemistryStereochemistryGeneral ChemistryCrystal structurePyrazole010402 general chemistryCondensed Matter Physics01 natural sciencesMagnetic susceptibility0104 chemical scienceschemistry.chemical_compoundBinding abilityPerchlorateCrystallographychemistryMoleculeGeneral Materials ScienceSelf-assemblyCrystEngComm
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Dicopper(II) pyrazolenophanes: Ligand effects on their structures and magnetic properties

2016

Abstract The use of simple pyrazolate anions and related polychelating acyclic or macrocyclic pyrazolate derivatives as bridging ligands, and occasionally additional blocking ligands, has led to the stereospecific Cu II -mediated self-assembly of both homo- and heteroleptic di-μ-pyrazolatodicopper(II) complexes of the metallacyclophane type, so-called dicopper(II) pyrazolenophanes. Besides their unique molecular conformation features and binding abilities toward both neutral molecules and charged anionic species, which have illustrated the putative role of weak intramolecular π–π stacking, hydrogen bonding, and coordinative interactions in the self-assembling process, dicopper(II) pyrazolen…

010405 organic chemistryHydrogen bondStereochemistryChemistryLigandStacking010402 general chemistry01 natural sciencesInductive couplingPlanarity testing0104 chemical sciencesInorganic ChemistryMetalvisual_artIntramolecular forceMaterials Chemistryvisual_art.visual_art_mediumMoleculePhysical and Theoretical ChemistryCoordination Chemistry Reviews
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CCDC 987581: Experimental Crystal Structure Determination

2014

Related Article: Isabel Castro, M. Luisa Calatayud, Wdeson P. Barros, José Carranza, Miguel Julve, Francesc Lloret, Nadia Marino, and Giovanni De Munno|2014|Inorg.Chem.|53|5759|doi:10.1021/ic500544n

Space GroupCrystallographyCrystal Systemcatena-[(mu~2~-22'-bipyrimidine)-(mu~2~-35-dimethylpyrazolato-N:N')-(mu~2~-hydroxo)-bis(35-dimethyl-1H-pyrazole)-di-copper diperchlorate]Crystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1047962: Experimental Crystal Structure Determination

2015

Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A

Space GroupCrystallographybis(mu2-4-Methylpyrazolato-NN')-(mu2-perchlorato-OO)-(22'-bipyrimidine-NN')-(perchlorato-O)-di-copperCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 951253: Experimental Crystal Structure Determination

2014

Related Article: Wdeson P. Barros, Beatriz C. da Silva, Natália V. Reis, Cynthia L. M. Pereira, Antônio C. Doriguetto, Joan Cano, Kleber R. Pirota, Emerson F. Pedroso, Miguel Julve, Humberto O. Stumpf|2014|Dalton Trans.|43|14586|doi:10.1039/C4DT01180E

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(tetra-n-butylammonium) bis(mu-45-dichloro-12-phenylenebis(oxamato))-tetrakis(dimethyl sulfoxide)-tri-copper(ii)Experimental 3D Coordinates
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CCDC 987580: Experimental Crystal Structure Determination

2014

Related Article: Isabel Castro, M. Luisa Calatayud, Wdeson P. Barros, José Carranza, Miguel Julve, Francesc Lloret, Nadia Marino, and Giovanni De Munno|2014|Inorg.Chem.|53|5759|doi:10.1021/ic500544n

catena-[(mu~2~-aqua)-(mu~2~-22'-bipyrimidine)-(mu~2~-3-methylpyrazolato-N:N')-(mu~2~-3-methylpyrazolato-N':N)-di-copper diperchlorate dihydrate]Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1047964: Experimental Crystal Structure Determination

2015

Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A

(mu2-Aqua)-(mu2-pyrazolato-NN')-bis(47-dimethyl-110-phenanthroline-NN')-di-copper(ii) diperchlorate acetonitrile solvate monohydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 951150: Experimental Crystal Structure Determination

2014

Related Article: Wdeson P. Barros, Beatriz C. da Silva, Natália V. Reis, Cynthia L. M. Pereira, Antônio C. Doriguetto, Joan Cano, Kleber R. Pirota, Emerson F. Pedroso, Miguel Julve, Humberto O. Stumpf|2014|Dalton Trans.|43|14586|doi:10.1039/C4DT01180E

Space GroupCrystallographybis(tetra-n-butylammonium) bis(mu~2~-((2-((carboxy(hydroxy)methylene)amino)-45-dinitrophenyl)amino)(oxo)acetato)-tetrakis(dimethyl sulfoxide)-tri-copperCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1559171: Experimental Crystal Structure Determination

2017

Related Article: Eloisa O. Ribeiro, Nathália R. de Campos, Antônio C. Doriguetto, Wdeson P. Barros, Marcos A. Ribeiro, Elgte E. B. De Paula, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria V. Marinho|2017|CrystEngComm|19|5460|doi:10.1039/C7CE01230F

[mu-2356-tetrakis(pyridin-2-yl)pyrazine]-bis{N-[(pyridine)carbonyl]pyridine-2-carboxamidato}-di-copper dinitrate pentahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1047963: Experimental Crystal Structure Determination

2015

Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis((mu2-Aqua)-bis(pyrazolato-NN')-bis(110-phenanthroline)-di-copper(ii)) (mu2-perchlorato)-bis(mu2-pyrazolato)-(perchlorato-O)-bis(110-phenanthroline)-di-copper triperchlorate hexahydrateExperimental 3D Coordinates
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CCDC 949613: Experimental Crystal Structure Determination

2018

Related Article: María Castellano, Wdeson P. Barros, Jesús Ferrando-Soria, Miguel Julve, Francesc Lloret, Jorge Pasán, Catalina Ruiz-Pérez, Laura Cañadillas-Delgado, Rafael Ruiz-Garcia, Joan Cano|2018|J.Coord.Chem.|71|675|doi:10.1080/00958972.2018.1433827

Space GroupCrystallographyCrystal Systemtetrakis(tetra-n-butylammonium) bis(mu-22'-(naphthalene-15-diyldiimino)bis(oxoacetato))-di-copper(ii) tetrahydrateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 987579: Experimental Crystal Structure Determination

2014

Related Article: Isabel Castro, M. Luisa Calatayud, Wdeson P. Barros, José Carranza, Miguel Julve, Francesc Lloret, Nadia Marino, and Giovanni De Munno|2014|Inorg.Chem.|53|5759|doi:10.1021/ic500544n

Space GroupCrystallographyCrystal Systemcatena-[(mu~2~-aqua)-(mu~2~-22'-bipyrimidine)-bis(mu~2~-pyrazolato)-aqua-(perchlorato)-di-copper perchlorate dihydrate]Crystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 986670: Experimental Crystal Structure Determination

2014

Related Article: José Martínez-Lillo, John Kong, Wdeson P. Barros, Juan Faus, Miguel Julve, Euan K. Brechin|2014|Chem.Commun.|50|5840|doi:10.1039/C4CC01564A

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinatesbis(1H-Imidazole-N^3^)-(2-(1H-imidazol-2-yl)pyridine)-copper(ii) hexachloro-rhenium(iv) acetonitrile solvate
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CCDC 1047965: Experimental Crystal Structure Determination

2015

Related Article: Wdeson P. Barros, M. Luisa Calatayud, Francesc Lloret, Miguel Julve, Nadia Marino, Giovanni De Munno, Humberto O. Stumpf, Rafael Ruiz-García, Isabel Castro|2016|CrystEngComm|18|437|doi:10.1039/C5CE02058A

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters(mu2-Pyrazolato-NN')-bis(acetonitrile)-bis(3478-tetramethyl-110-phenanthroline-NN')-di-copper(ii) diperchlorateExperimental 3D Coordinates
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CCDC 948414: Experimental Crystal Structure Determination

2015

Related Article: María Castellano, Wdeson P. Barros, Alvaro Acosta, Miguel Julve, Francesc Lloret, Yanling Li, Yves Journaux, Giovanni De Munno, Donatella Armentano, Rafael Ruiz-García, Joan Cano|2014|Chem.-Eur.J.|20|13965|doi:10.1002/chem.201403987

Space GroupCrystallographyCrystal SystemCrystal Structuretetrakis(Ethyl(triphenyl)phosphonium) bis(mu2-22'-((910-dioxo-910-dihydroanthracene-14-diyl)diimino)bis(oxoacetato))-di-copper(ii) icosahydrateCell ParametersExperimental 3D Coordinates
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CCDC 1559172: Experimental Crystal Structure Determination

2017

Related Article: Eloisa O. Ribeiro, Nathália R. de Campos, Antônio C. Doriguetto, Wdeson P. Barros, Marcos A. Ribeiro, Elgte E. B. De Paula, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria V. Marinho|2017|CrystEngComm|19|5460|doi:10.1039/C7CE01230F

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters(mu-44'-(propane-13-diyl)dipyridine)-triaqua-(perchlorato)-bis(N-(pyridine-2-carbonyl)pyridine-2-carboxamide)-di-copper(ii) perchlorate monohydrateExperimental 3D Coordinates
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CCDC 1558468: Experimental Crystal Structure Determination

2018

Related Article: Natalia V. Reis, Wdeson P. Barros, Willian X. C. Oliveira, Cynthia L. M. Pereira, Willian R. Rocha, Carlos B. Pinheiro, Francesc Lloret, Miguel Julve, Humberto O. Stumpf|2018|Eur.J.Inorg.Chem.||477|doi:10.1002/ejic.201700821

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinatesbis(mu-[(2-{[carboxylato(oxidanidyl)methylidene]amino}phenyl)azanidyl](oxo)acetato)-bis(NNN-tris[(pyridin-2-yl)methyl]amine)-di-copper-di-nickel hexahydrate
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