A5075241559- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Metal complexes synthesis and properties
- Crystallography and molecular interactions
- Metal-Organic Frameworks: Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Advanced NMR Techniques and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Environmental Sustainability and Education
- Vanadium and Halogenation Chemistry
- Porphyrin and Phthalocyanine Chemistry
- Inorganic and Organometallic Chemistry
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Catalytic Processes in Materials Science
- Electrochemical Analysis and Applications
- Organometallic Complex Synthesis and Catalysis
- Chemistry Education and Research
- Supramolecular Chemistry and Complexes
- Chemistry and Chemical Engineering
- Electron Spin Resonance Studies
- Synthesis and Characterization of Heterocyclic Compounds
- Crystal structures of chemical compounds
- Organic and Molecular Conductors Research
Universidade Federal de Minas Gerais
2012-2024
Instituto de Investigaciones en Ciencias de la Salud
2021
Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais
2020
Université de Rennes
2013-2014
Centre National de la Recherche Scientifique
2013-2014
Institut des Sciences Chimiques de Rennes
2013
The [Dy(tta)3(L)] complex behaves as a single ion magnet both in its crystalline phase and solution. Experimental theoretical magnetic anisotropy axes perfectly match lie along the most electro-negative atoms of coordination sphere. Both VSM MCD measurements highlight robustness complex, with persistence memory effect even solution up to 4 K.
Two air-stable, isostructural, mononuclear six-coordinate manganese(II) and cobalt(II) oxamate complexes, [M(4-HOpa)2(H2O)2] [4-HOpa = N-4-hydroxyphenyloxamate; M= Mn2+ (1) or Co2+ (2)], exhibit field-induced slow magnetic relaxation. A bottleneck process is observed throughout the temperature range of 2–20 K for 1, while 2, it dominates only at low temperatures (2–4 K). Additionally, Raman [n 6.9(2)] responsible an increase in relaxation time higher to 2.
Abstract The two mononuclear complexes [Ln(tta) 3 (L)] · C 6 H 14 {Ln = Dy III and Yb } (tta – 2‐thenoyltrifluoroacetonate, L 2‐{1‐methylpyridyl‐4,5‐[4,5‐bis(propylthio)tetrathiafulvalenyl]‐1 ‐benzimidazol‐2‐yl}pyridine) are isostructural. lanthanide ions adopt a distorted‐square‐antiprism coordination polyhedron ( D 4d symmetry). compound behaves like single‐molecule magnet (SMM), whereas no out‐of‐phase component of the magnetic susceptibility is measured for . crystal‐field splitting 2 F...
Three new coordination compounds of formula (edap)2[Cu(opba)]2·4H2O (1), (edap)[{Na2(H2O)4}{Cu2(opba)2}]·2H2O (2), and (edap)[{K2(H2O)2}{Cu2(opba)2}]·3H2O (3) (edap = 1,1′-ethylenebis(4-aminopyridinium) opba 1,2-phenylenebis(oxamate)) were synthesized through the metathesis reaction involving A2[Cu(opba)] (A Li+, Na+, K+) (edap)Cl2·2H2O. Crystal structures 1–3 edap(IO3)2·4H2O compound elucidated by single crystal X-ray diffraction. Compounds are built up from dinuclear copper(II) entities,...
The self-assembly of <italic>N</italic>-(4-hydroxyphenyl)oxamate ligands and copper(<sc>ii</sc>) ions result in a dinuclear copper complex bridged by carboxylate moieties the oxamate exhibiting ferromagnetic coupling.
In this work, we describe the synthesis, crystal structures and magnetic properties of four air-stable mononuclear lanthanide(III) complexes with N-(2,4,6-trimethylphenyl)oxamate (Htmpa) formula: n-Bu4N[Nd(Htmpa)4(H2O)]·4H2O (1), n-Bu4N[Gd(Htmpa)4(H2O)]·3DMSO·2H2O (2), n-Bu4N[Tb(Htmpa)4(H2O)]·3DMSO·1H2O (3) n-Bu4N[Dy(Htmpa)4(H2O)]·3DMSO·2H2O (4) (n-Bu4N+ = n-tetrabutylammonium; DMSO dimethylsulfoxide). Their reveal occurrence calixarene-type monoanionic species containing all-cis-disposed...
The galvanostatic reaction of the [4,5-bis(2-pyridyl-N-oxidemethylthio)]-4',5'-methyldithiotetrathiafulvalene ligand with lanthanide ions in presence hexafluorophosphate (PF6(-)) anions afforded highest-nuclearity clusters decorated by tetrathiafulvalene-based ligands thanks to original partial hydrolysis PF6(-) difluorodioxophosphate (PO2F2(-)) bridging ligands.
Hybrid oxidation catalysts and adsorbent materials containing niobium(<sc>v</sc>)–copper(<sc>ii</sc>) for the decontamination of real wastewater organic pollutants are reported herein.
The synthesis, crystal structure and magnetic properties of the coordination polymers formula [EDAP{Li6(H2O)8[(Cu2(μ-mpba)2)2(H2O)2]}]n (1) [(EDAP)2{K(H2O)4[Cu2(μ-mpba)2(H2O)2]}Cl·2H2O]n (2), in which mpba = N,N′-1,3-phenylenebis(oxamate) EDAP2+ 1,1′-ethylenebis(4-aminopyridinium) are described. Both compounds have common presence [Cu2(mpba)2]4− tetraanionic unit is a [3,3] metallacyclophane motif copper(II) ions five-coordinate distorted square pyramidal surrounding. complex anion 1...
POLYMER CONTAINING COBALT(II) AND COPPER(II).This work describes the synthesis and characterization of two new compounds with ligand opy (N-(2-pyridyl)oxamate): copper(II) precursor [Me 4 N] 2 [Cu(opy) ].5H O Co II Cu coordination polymer {[CoCu(opy) ]} n ×4nH O.This latter compound was obtained by reaction CoCl .6H in water.The heterobimetallic chain characterized elemental analysis, IR spectroscopy, thermogravimetry magnetic measurements.Magnetic revealed typical behavior one-dimensional...
SUSTAINABILITY AND SDGS ON THE PAGES: A CONTENT ANALYSIS OF PNLD 2021 TEXTBOOKS IN CONTEXT CHEMISTRY. Sustainability and Sustainable Development Goals (SDGs) have gained prominence in contemporary discourse, driven by the urgency of addressing climate change demand for transformative actions planet preservation. Recognized global entities such as United Nations Brazilian Chemical Society, Basic Education is crucial instigating societal change. In context diverse classrooms, textbooks stand...