Search Results - "Ribeiro, Ronny R."

A Rare Example of Four-Coordinate Nonoxido Vanadium(IV) Alkoxide in the Solid State: Structure, Spectroscopy, and Magnetization Dynamics by Stinghen, Danilo, Atzori, Matteo, Fernandes, Caprici M., Ribeiro, Ronny R., de Sá, Eduardo L., Back, Davi F., Giese, Siddhartha O. K., Hughes, David L., Nunes, Giovana G., Morra, Elena, Chiesa, Mario, Sessoli, Roberta, Soares, Jaísa F.

“…The distorted tetrahedral [V­(OAd)4] alkoxide (OAd = 1-adamantoxide, complex 1) is the first homoleptic, mononuclear vanadium­(IV) alkoxide to be characterized…”
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Synthesis of new metalloporphyrin derivatives from [5,10,15,20-tetrakis (pentafluorophenyl)porphyrin] and 4-mercaptobenzoic acid for homogeneous and heterogeneous catalysis by de F. Castro, Kelly A.D., Simões, Mário M.Q., da Graça P.M.S. Neves, Maria, Cavaleiro, José A.S., Ribeiro, Ronny R., Wypych, Fernando, Nakagaki, Shirley

“…Synthetic metalloporphyrins are catalysts that can efficiently insert oxygen and other atoms such as nitrogen and sulfur in hydrocarbons and in a wide variety…”
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Exploring the Organometallic Route to Molecular Spin Qubits: The [CpTi(cot)] Case by Camargo, Luana C., Briganti, Matteo, Santana, Francielli S., Stinghen, Danilo, Ribeiro, Ronny R., Nunes, Giovana G., Soares, Jaísa F., Salvadori, Enrico, Chiesa, Mario, Benci, Stefano, Torre, Renato, Sorace, Lorenzo, Totti, Federico, Sessoli, Roberta

“…The coherence time of the 17‐electron, mixed sandwich complex [CpTi(cot)], (η8‐cyclooctatetraene)(η5‐cyclopentadienyl)titanium, reaches 34 μs at 4.5 K in a…”
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(η 8 -Cyclooctatetraene)(η 5 -fluorenyl)titanium: a processable molecular spin qubit with optimized control of the molecule-substrate interface by Wisbeck, Sarita, Sorrentino, Andrea Luigi, Santana, Francielli S, de Camargo, Luana C, Ribeiro, Ronny R, Salvadori, Enrico, Chiesa, Mario, Giaconi, Niccolò, Caneschi, Andrea, Mannini, Matteo, Poggini, Lorenzo, Briganti, Matteo, Serrano, Giulia, Soares, Jaísa F, Sessoli, Roberta

“…Depositing single paramagnetic molecules on surfaces for sensing and quantum computing applications requires subtle topological control. To overcome issues…”
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A new approach to study semi-coordination using two 2-methyl-5-nitroimidazole copper() complexes of biological interest as a model system by Fachini, Lucas G, Baptistella, Gabriel B, Postal, Kahoana, Santana, Francielli S, de Souza, Emanuel M, Ribeiro, Ronny R, Nunes, Giovana G, Sá, Eduardo L

“…Two novel copper( ii ) complexes [Cu(2mni) 2 (H 2 O) 2 ](NO 3 ) 2 ·2H 2 O ( 1 ) and [Cu(2mni) 2 (NO 3 ) 2 ] ( 2 ), where 2mni is 2-methyl-5-nitroimidazole,…”
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Tetramethyl-phenanthroline copper complexes in the development of drugs to treat cancer: synthesis, characterization and cytotoxicity studies of a series of copper(II)-l-dipeptide-3,4,7,8-tetramethyl-phenanthroline complexes by Alvarez, Natalia, Leite, Celisnolia M., Napoleone, Adriana, Mendes, Luis F. S., Fernández, Carlos Y., Ribeiro, Ronny R., Ellena, Javier, Batista, Alzir A., Costa-Filho, Antonio J., Facchin, Gianella

“…New compounds to fight cancer are needed due to cancer high incidence and lack of curative treatments for several classes of this disease. Metal-based…”
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Methyl Ester Functionalized Phenalenyl Arene- and Bipyridine–Ruthenium-Based Complexes for Electroactive Langmuir–Blodgett Films by Wahl, Isis Mani, Westphal, Eduard, Leyser da Costa Gouveia, Tiago, Santana, Francielli Sousa, Hughes, David L, Ribeiro, Ronny R, Piccoli, Leonardo Henrique Ribeiro, Winnischofer, Herbert

“…We report the synthesis of a new phenalenyl ligand, functionalized with a methyl ester electron withdrawing group, named 9-hydroxy-1-oxo-1H-phenalen-5-methyl…”
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Stability in solution and chemoprotection by octadecavanadates(IV/V) in E. coli cultures by Postal, Kahoana, Santana, Francielli S., Hughes, David L., Rüdiger, André L., Ribeiro, Ronny R., Sá, Eduardo L., de Souza, Emanuel M., Soares, Jaísa F., Nunes, Giovana G.

“…Two mixed-valence octadecavanadates, (NH4)2(Me4N)5[VIV12VV6O42I]·Me4NI·5H2O (V18I) and [{K6(OH2)12VIV11VV7O41(PO4)·4H2O}n] (V18P), were synthesized and…”
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The influence of thioether-substituted ligands in dicopper(II) complexes: Enhancing oxidation and biological activities by Durigon, Daniele C., Glitz, Vinícius A., Pimenta, Beatriz F., Guedes, Anderson M.V., Silva, João V.O., Bella Cruz, Catarina C., Andrade, Lídia M., Pereira-Maia, Elene C., Mikcha, Jane M.G., Bella Cruz, Alexandre, Xavier, Fernando R., Terenzi, Hernán F., Poneti, Giordano, Ribeiro, Ronny R., Nordlander, Ebbe, Caramori, Giovanni F., Bortoluzzi, Adailton J., Peralta, Rosely A.

“…This paper describes the synthesis, structural analysis, as well as the magnetic and spectroscopic characterizations of three new dicopper(II) complexes with…”
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An unsymmetrical mixed-valence oxidovanadium(IV/V) binuclear complex: Synthesis, characterization, DFT studies, and bromoperoxidase activity by Bottini, Rubia C.R., Fachini, Lucas G., Baptistella, Gabriel B., Stinghen, Danilo, Santana, Francielli S., Briganti, Matteo, Ribeiro, Ronny R., Soares, Jaísa F., Sá, Eduardo L., Nunes, Giovana G.

“…[Display omitted] •An unsymmetrical mixed-valence oxidovanadium(IV/V) binuclear complex was synthesized.•DFT calculations and EPR spectroscopy indicates a…”
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In-vitro evaluation studies of 7-chloro-4-aminoquinoline Schiff bases and their copper complexes as cholinesterase inhibitors by Zanon, Vanessa S., Lima, Josélia A., Cuya, Teobaldo, Lima, Flavia R.S., da Fonseca, Anna C.C., Gomez, Javier G., Ribeiro, Ronny R., França, Tanos C.C., Vargas, Maria D.

“…Alzheimer's disease (AD) is one of the most common age-related neurodegenerative disorders. Aggregation of amyloid-β peptide into extracellular plaques with…”
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Synthesis, structural characterization and cytotoxic activity of ternary copper(II)–dipeptide–phenanthroline complexes. A step towards the development of new copper compounds for the treatment of cancer by Iglesias, Sebastián, Alvarez, Natalia, Torre, María H., Kremer, Eduardo, Ellena, Javier, Ribeiro, Ronny R., Barroso, Rafael P., Costa-Filho, Antonio J., Kramer, M. Gabriela, Facchin, Gianella

“…In the search for new compounds with antitumor activity, coordination complexes with different metals are being studied by our group. This work presents the…”
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Vanadium(III) complexes containing phenoxy–imine–thiophene ligands: Synthesis, characterization and application to homo‐ and copolymerization of ethylene by Prado, Nayara T., Ribeiro, Ronny R., L. Casagrande, Osvaldo

“…A set of vanadium(III) complexes, namely {SNO}VCl2(THF)2 (2a, SNO = thiophene‐(N═CH)‐phenol; 2b, SNO = 5‐phenylthiophene‐(N═CH)‐phenol; 2c,…”
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Use of modified activated carbon for the oxidation of aqueous sulfide by Lemos, Bruno R.S., Teixeira, Ivo F., de Mesquita, João P., Ribeiro, Ronny R., Donnici, Cláudio L., Lago, Rochel M.

“…The oxidation of aqueous sulfide promoted by activated carbon (AC) was investigated. Raman, infrared, X-ray diffraction, ultraviolet–visible spectroscopy and…”
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Synthesis, characterization and catalytic activity toward dye decolorization by manganese (II) mononuclear complexes by Wegermann, Camila A., Strapasson, Paola, Romanowski, Stela M.M., Bortoluzzi, Adailton, Ribeiro, Ronny R., Nunes, Fábio S., Drechsel, Sueli M.

“…[Display omitted] ► Dye decolorization reactions using manganese complexes as catalysts. ► Complete structural characterization of the catalysts. ► Radical…”
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Design of novel iron compounds as potential therapeutic agents against tuberculosis by Tarallo, M. Belén, Urquiola, Carolina, Monge, Antonio, Costa, Beatriz Parajón, Ribeiro, Ronny R., Costa-Filho, Antonio J., Mercader, Roberto C., Pavan, Fernando R., Leite, Clarice Q.F., Torre, María H., Gambino, Dinorah

“…In the search for new therapeutic tools against tuberculosis two novel iron complexes, [Fe(L–H) 3], with 3-aminoquinoxaline-2-carbonitrile N 1 , N 4-dioxide…”
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Exploring the Organometallic Route to Molecular Spin Qubits: The [CpTi(cot)] Case by Camargo, Luana C., Briganti, Matteo, Santana, Francielli S., Stinghen, Danilo, Ribeiro, Ronny R., Nunes, Giovana G., Soares, Jaísa F., Salvadori, Enrico, Chiesa, Mario, Benci, Stefano, Torre, Renato, Sorace, Lorenzo, Totti, Federico, Sessoli, Roberta

“…The coherence time of the 17‐electron, mixed sandwich complex [CpTi(cot)], (η8‐cyclooctatetraene)(η5‐cyclopentadienyl)titanium, reaches 34 μs at 4.5 K in a…”
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Synthesis, characterization and chemoprotective activity of polyoxovanadates against DNA alkylation by Nunes, Giovana G., Bonatto, Ana C., de Albuquerque, Carla G., Barison, Andersson, Ribeiro, Ronny R., Back, Davi F., Andrade, André Vitor C., de Sá, Eduardo L., Pedrosa, Fábio de O., Soares, Jaísa F., de Souza, Emanuel M.

“…The alkylation of pUC19 plasmid DNA has been employed as a model reaction for the first studies on chemoprotective action by a mixed-valence (+IV/+V)…”
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Homogeneous and heterogeneous olefin epoxidation catalyzed by a binuclear Mn(II)Mn(III) complex by Castaman, Silvana T., Nakagaki, Shirley, Ribeiro, Ronny R., Ciuffi, Kátia J., Drechsel, Sueli M.

“…The catalytic performance of the binuclear manganese complex Mn(II)Mn(III) in epoxidation reactions was evaluated for both homogeneous and heterogeneous…”
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Influence of the ADP/ATP ratio, 2-oxoglutarate and divalent ions on Azospirillum brasilense PII protein signalling by GERHARDT, Edileusa C. M, ARAUJO, Luíza M, RIBEIRO, Ronny R, CHUBATSU, Leda S, SCARDUELLI, Marcelo, RODRIGUES, Thiago E, MONTEIRO, Rose A, PEDROSA, Fabio O, SOUZA, Emanuel M, HUERGO, Luciano F

“…Proteins belonging to the P(II) family coordinate cellular nitrogen metabolism by direct interaction with a variety of enzymes, transcriptional regulators and…”
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