0000000000033662

AUTHOR

Humberto V. Fajardo

showing 4 related works from this author

1D coordination polymer based on copper(II)-containing tetrameric 1,2,3-triazole ligand from click chemistry: Magnetic and catalytic properties

2019

Abstract A novel tetrameric tetra[O-((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)]-pentaerythritol (TBTP) has been synthesized using click chemistry strategy. TBTP was characterized and used as ligand to form new Cu(II) complexes, forming 1-D coordination polymers. Two square planar complexes were characterized by single-crystal X-ray diffraction, presenting formula [Cu(TBTP)][Cu(NO3)4] (1) and [Cu(TBTP)](NO3)2 (2). In both structures, a cationic 1-D coordination polymer (CP) has been formed. The CP contain a 1:1 Cu(II)/TBTP ratio with four neutral triazole groups coordinating the Cu(II) center, forming a Cu N bonds ranging 1.988(2)–2.001(2) A. The study of the magnetic properties of compounds 1…

123-Triazole010405 organic chemistryCoordination polymerLigandCationic polymerizationTriazole010402 general chemistry01 natural sciences0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundCrystallographyAnilineAzobenzenechemistryMaterials ChemistryClick chemistryPhysical and Theoretical ChemistryInorganica Chimica Acta
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Catalytic oxidation of n-hexane promoted by Ce1-xCuxO2 catalysts prepared by one-step polymeric precursor method

2013

Abstract Ceria-supported copper catalysts (Ce1−xCuxO2, with x (mol) = 0, 0.01, 0.03, 0.05 and 0.10) were prepared in one step through the polymeric precursor method. The textural properties of the catalysts were investigated by X-ray diffraction (XRD), Rietveld refinement, N2-physisorption (BET surface area), electron paramagnetic resonance (EPR), UV–visible diffuse reflectance and photoluminescence spectroscopies and temperature-programmed reduction (TPR). In a previous study ceria-supported copper catalysts were found to be efficient in the preferential oxidation of CO. In this study, we extended the catalytic application of Ce1−xCuxO2 systems to n-hexane oxidation and it was verified tha…

Materials scienceRietveld refinementInorganic chemistrychemistry.chemical_elementCondensed Matter PhysicsCopperlaw.inventionCatalysisHexanechemistry.chemical_compoundCatalytic oxidationchemistrylawGeneral Materials ScienceDiffuse reflectionDIFRAÇÃO POR RAIOS XElectron paramagnetic resonanceBET theory
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CCDC 1811037: Experimental Crystal Structure Determination

2019

Related Article: Leonardo C. Moraes, Gilmar P. de Souza, Humberto V. Fajardo, Sulusmon C. Luz, Eleuterio Álvarez, Francesc Lloret, Renato M. Ribeiro-Viana, Javier Rojo, Humberto O. Stumpf, Rute C. Figueiredo, Rodrigo S. Corrêa|2019|Inorg.Chim.Acta|489|93|doi:10.1016/j.ica.2019.02.010

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterscatena-[(mu-{44'-[(22-bis{[(1-benzyl-1H-123-triazol-4-yl)methoxy]methyl}propane-13-diyl)bis(oxymethylene)]bis(1-benzyl-1H-123-triazole)})-copper tetrakis(nitrato)-copper]Experimental 3D Coordinates
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CCDC 1811038: Experimental Crystal Structure Determination

2019

Related Article: Leonardo C. Moraes, Gilmar P. de Souza, Humberto V. Fajardo, Sulusmon C. Luz, Eleuterio Álvarez, Francesc Lloret, Renato M. Ribeiro-Viana, Javier Rojo, Humberto O. Stumpf, Rute C. Figueiredo, Rodrigo S. Corrêa|2019|Inorg.Chim.Acta|489|93|doi:10.1016/j.ica.2019.02.010

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterscatena-[(mu-{44'-[(22-bis{[(1-benzyl-1H-123-triazol-4-yl)methoxy]methyl}propane-13-diyl)bis(oxymethylene)]bis(1-benzyl-1H-123-triazole)})-copper dinitrate unknown solvate]Experimental 3D Coordinates
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