Search Results - "Speziali, Nivaldo L."

New Families of Hetero-tri-spin 2p−3d−4f Complexes: Synthesis, Crystal Structures, and Magnetic Properties by Escobar, Lívia B. L, Guedes, Guilherme P, Soriano, Stéphane, Speziali, Nivaldo L, Jordão, Alessandro K, Cunha, Anna Claudia, Ferreira, Vitor F, Maxim, Catalin, Novak, Miguel A, Andruh, Marius, Vaz, Maria G. F

“…In this work we report the synthesis, crystal structures, and magnetic behavior of 2p–3d–4f heterospin systems containing the nitroxide radical…”
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Synthesis, cytotoxicity and antiplasmodial activity of novel ent-kaurane derivatives by Batista, Ronan, García, Pablo A, Castro, María Angeles, Miguel Del Corral, José M, Speziali, Nivaldo L, de P Varotti, Fernando, de Paula, Renata C, García-Fernández, Luis F, Francesch, Andrés, San Feliciano, Arturo, de Oliveira, Alaíde B

“…This paper reports on the syntheses and spectrometric characterisation of eleven novel ent-kaurane diterpenoids, including a complete set of (1)H, (13)C NMR…”
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Role of the Substituent Effect over the Squarate Oxocarbonic Ring: Spectroscopy, Crystal Structure, and Density Functional Theory Calculations of 1,2-Dianilinosquairane by Silva, Carlos E, Dos Santos, Hélio F, Speziali, Nivaldo L, Diniz, Renata, de Oliveira, Luiz Fernando C

“…This work presents the crystal structure and the investigation under a supramolecular perspective of a squaric acid derivative obtained from the replacement of…”
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Improved antileishmanial activity of Dppz through complexation with antimony(III) and bismuth(III): investigation of the role of the metal by Lizarazo-Jaimes, Edgar H, Monte-Neto, Rubens L, Reis, Priscila G, Fernandes, Nelson G, Speziali, Nivaldo L, Melo, Maria N, Frézard, Frédéric, Demicheli, Cynthia

“…Two novel trivalent antimony(III) and bismuth(III) complexes with the nitrogen-donor heterocyclic ligand dipyrido[3,2-a:2',3'-c]phenazine (dppz) were…”
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New synthetic route toward heterometallic 3d-3d' and 3d-4f single-molecule magnets. The first Co(II)-Mn(III) heterometallic complex by Guedes, Guilherme P, Soriano, Stéphane, Mercante, Luiza A, Speziali, Nivaldo L, Novak, Miguel A, Andruh, Marius, Vaz, Maria G F

“…Four tetranuclear heterometallic complexes, [Co(II)2Mn2(III)(dpm)4(MeO)6] (1) and [Ln(III)2Mn(III)2(dpm)6(MeO)6(MeOH)n], where Ln = Gd (2, n = 2), Tb (3, n =…”
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5-Nitroimidazole-derived Schiff bases and their copper(II) complexes exhibit potent antimicrobial activity against pathogenic anaerobic bacteria by Oliveira, Alexandre A., Oliveira, Ana P. A., Franco, Lucas L., Ferencs, Micael O., Ferreira, João F. G., Bachi, Sofia M. P. S., Speziali, Nivaldo L., Farias, Luiz M., Magalhães, Paula P., Beraldo, Heloisa

“…In the present work a family of novel secnidazole-derived Schiff base compounds and their copper(II) complexes were synthesized. The antimicrobial activities…”
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Pyridine-derived thiosemicarbazones and their tin(IV) complexes with antifungal activity against Candida spp by Parrilha, Gabrieli L., da Silva, Jeferson G., Gouveia, Ludmila F., Gasparoto, Alan K., Dias, Roberta P., Rocha, Willian R., Santos, Daniel A., Speziali, Nivaldo L., Beraldo, Heloisa

“…[( n-Bu)Sn(2Ac4 oClPh)Cl 2] ( 1), [( n-Bu)Sn(2Ac4 oFPh)Cl 2] ( 2), [( n-Bu)Sn(2Ac4 oNO 2Ph)Cl 2] ( 3), [( n-Bu)Sn(2Bz4 oClPh)Cl 2] ( 4), [( n-Bu)Sn(2Bz4…”
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Gold(I) complexes with thiosemicarbazones: Cytotoxicity against human tumor cell lines and inhibition of thioredoxin reductase activity by Lessa, Josane A., Guerra, Juliana C., de Miranda, Luana F., Romeiro, Carla F.D., Da Silva, Jeferson G., Mendes, Isolda C., Speziali, Nivaldo L., Souza-Fagundes, Elaine M., Beraldo, Heloisa

“…Complexes [Au(H2Ac4DH)Cl]∙MeOH ( 1) [Au(H 22Ac4Me)Cl]Cl ( 2) [Au(H 22Ac4Ph)Cl]Cl∙2H 2O ( 3) and [Au(H 22Bz4Ph)Cl]Cl ( 4) were obtained with 2-acetylpyridine…”
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2-Acetylpyridine thiosemicarbazones: Cytotoxic activity in nanomolar doses against malignant gliomas by Lessa, Josane A., Mendes, Isolda C., da Silva, Paulo R.O., Soares, Marcella A., dos Santos, Raquel G., Speziali, Nivaldo L., Romeiro, Nelilma C., Barreiro, Eliezer J., Beraldo, Heloisa

“…2-Acetylpyridine N(4)-phenyl thiosemicarbazone (H2Ac4Ph), and its N(4)- ortho-tolyl (H2Ac4 oT), N(4)- meta-tolyl (H2Ac4 mT), N(4)- para-tolyl (H2Ac4 pT), N(4)-…”
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Supramolecular complexes obtained from the interaction of violuric acid with manganese ion and nitrogenous ligands by Garcia, Humberto C., Diniz, Renata, Speziali, Nivaldo L., de Oliveira, Luiz Fernando C.

“…[Display omitted] •Three new complexes obtained from violuric acid, manganese ion and nitrogenous ligands.•X-ray diffraction and vibrational data to understand…”
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Synthesis, Crystal Structure and Magnetic Properties of a Novel Heterobimetallic Rhenium(IV)-Dysprosium(III) Chain by Pejo, Carolina, Guedes, Guilherme P., Novak, Miguel A., Speziali, Nivaldo L., Chiozzone, Raúl, Julve, Miguel, Lloret, Francesc, Vaz, Maria G. F., González, Ricardo

“…The use of the mononuclear rhenium(IV) precursor [ReBr5(H2pydc)]− (H2pydc=3,5‐pyridinedicarboxylic acid) as a metalloligand towards dysprosium(III) afforded…”
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A New Quartz-like Metal–Organic Framework Constructed from a Versatile Pyrazole-Based Spacer by Guedes, Guilherme P, Santos, Igor F, Mercante, Luiza A, Speziali, Nivaldo L, Resende, Jackson A. L. C, Bernardino, Alice M. R, Andruh, Marius, Vaz, Maria G. F

“…Two new coordination polymers, 1 ∞[Cu2(L)4­(MeOH)]­·MeOH (1) and 3 ∞[Cu(L)2]­·5H2O (2), have been obtained exploring the potential of…”
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4-Nitroacetophenone-derived thiosemicarbazones and their copper(II) complexes with significant in vitro anti-trypanosomal activity by Pérez-Rebolledo, Anayive, Teixeira, Letícia R., Batista, Alzir A., Mangrich, Antonio S., Aguirre, Gabriela, Cerecetto, Hugo, González, Mercedes, Hernández, Paola, Ferreira, Ana M., Speziali, Nivaldo L., Beraldo, Heloisa

“…N 4-Methyl-4-nitroacetophenone thiosemicarbazone (H4NO 2Ac4M, 1), N 4, N 4-dimethyl-4-nitroacetophenone thiosemicarbazone (H4NO 2Ac4DM, 2) and N…”
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2-Benzoylpyridine- N(4)-tolyl thiosemicarbazones and their palladium(II) complexes: Cytotoxicity against leukemia cells by Ferraz, Karina S.O., Ferandes, Lucas, Carrilho, Diego, Pinto, Mauro C.X., Leite, Maria de Fátima, Souza–Fagundes, Elaine M., Speziali, Nivaldo L., Mendes, Isolda C., Beraldo, Heloisa

“…The palladium(II) complexes [Pd(2Bz4oT)Cl], [Pd(2Bz4mT)Cl], and [Pd(2Bz4pT)Cl] were prepared with N(4)- ortho- (H2Bz4oT) N(4)- meta- (H2Bz4mT) and N(4)- para-…”
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Chalcone-derived thiosemicarbazones and their zinc(II) and gallium(III) complexes: spectral studies and antimicrobial activity by DA SILVA, JEFERSON G., PERDIGÃO, CAMILA C.H., SPEZIALI, NIVALDO L., BERALDO, HELOISA

“…Chalcone-derived 3-phenyl-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone (HPyCTPh) (1), 3-(4-chlorophenyl)-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone…”
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An Angular Bis-Oxamate Tecton for the Construction of Heterobimetallic Coordination Polymers by Allão Cassaro, Rafael A, Ciattini, Samuele, Soriano, Stephane, Amorim, Hélio S, Speziali, Nivaldo L, Andruh, Marius, Vaz, Maria G. F

“…Two novel heterobimetallic three-dimensional coordination polymers, [Cu2Na4L2(CH3OH)2.3(H2O)5.2]·1.7H2O (1) and [CuNa2L(H2O)3.88]·H2O (2), have been obtained…”
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One-dimensional copper(II) coordination polymers based on carboxylate anions and rigid pyridyl-donor ligands by Marques, Lippy F., Marinho, Maria Vanda, Correa, Charlane C., Speziali, Nivaldo L., Diniz, Renata, Machado, Flávia C.

“…Two copper(II) compounds named [Cu2(μ-O2CCH2C4H3S)4(bipy)]n (1) and [Cu2(O2CCH2C4H3S)4(bpe)2]n (2) [(O2CCH2C4H3S)=3-thiopheneacetate anion;…”
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Structural studies on acetophenone- and benzophenone-derived thiosemicarbazones and their zinc(II) complexes by Ferraz, Karina S.O., Silva, Nayane F., Da Silva, Jeferson G., Speziali, Nivaldo L., Mendes, Isolda C., Beraldo, Heloisa

“…► Acetophenone- and benzophenone-derived thiosemicarbazones were synthesized. ► Zinc(II) complexes of the thiosemicarbazones were obtained. ► Structural…”
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Syntheses and Crystal Structures of Three Copper(II) Compounds with 2-Furoic Acid: A Dinuclear Paddle-wheel Unit and Two Coordination Polymers Supported by Pyridyl Donor Ligands by Marinho, Maria Vanda, Faria Marques, Lippy, Maia, Daniel S., Speziali, Nivaldo L., Yoshida, Maria Irene, Janczak, Jan, Hörner, Manfredo, Cimini Corrêa, Charlane, Diniz, Renata, Machado, Flávia C.

“…Three copper(II) complexes, [Cu2(O2CC4H3O)4(H2O)2]·H2O (1), {[Cu2(O2CC4H3O)4(bipy)2(H2O)2]·2H2O}n(2), and {[Cu(bpp)2(H2O)](O2CC4H3O)2·7H2O} (3) [O2CC4H3O =…”
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Synthesis, characterization and biocidal activity of new organotin complexes of 2-(3-oxocyclohex-1-enyl)benzoic acid by Vieira, Flaviana T., de Lima, Geraldo M., Maia, José R. da S., Speziali, Nivaldo L., Ardisson, José D., Rodrigues, Leonardo, Correa, Ary, Romero, Oscar B.

“…The reaction of 1,3-cyclohexadione with 2-aminobenzoic acid has produced the 2-(3-oxocyclohex-1-enyl)benzoic acid (HOBz). Subsequent reactions of the ligand…”
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