Výsledky vyhledávání - "Sebastião S. Lemos"

Synthesis, Structural Characterization and Evaluation of the Chelating Potential in C. Elegans Involving Complexes of Mercury (Ii) with Schiff Bases Derived from Amino Acids

Autor: Leandro de Oliveira Amaral, Priscila Gubert, Sebastião S. Lemos, Sérgio M. Soares, Julia Bornhorst, Claudia C. Gatto, Robert A. Burrow, Viner Sousa Lima

Publikováno v: SSRN Electronic Journal.

Two series of neutral mercury(II) complexes have been obtained from the reaction of HgPh(OCOCH 3 )( 1 , 2 , and 3 ) or Hg(OCOCH 3 ) 2 ( 4 , 5 , and 6 ) with N-(2-hydroxynaphtalidene)β-alanine (L1H 2 ), N-(5-bromo-salicylidene)β-alanine (L2H 2 ), an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c41f88c39b789de2ae3898fc1e95e2b0
https://doi.org/10.2139/ssrn.3611541

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Oxorhenium(V) complexes with a benzyldithiocarbazate ligand: synthesis, crystal structure, spectroscopic and DFT analyses

Autor: Sebastião S. Lemos, Adelheid Hagenbach, Amandha K. Silva, Marcel Zicolau Modolo, Ernesto Schulz Lang, Claudia C. Gatto, Victor M. Deflon, Ulrich Abram, André Gustavo de Araújo Fernandes, Rodolfo Moreno-Fuquen, Rommel Bezerra Viana

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Three new neutral oxorhenium(V) complexes were prepared with a 5-hydroxy-3-methyl-5-phenyl-pyrazoline-1-(S-benzyldithiocarbazate) ligand (H2bdtc): ReOCl(bdtc)(triphenylphosphine) [1] , ReOBr(bdtc)(triphenylphosphine) [2] and ReO(bdtc)(cysteamine) [3]

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::446d0bf956a2a2d0438fbcb400efa0b2
https://doi.org/10.1016/j.molstruc.2021.131875

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Synthesis, structural characterization and evaluation of the chelating potential in C. elegans involving complexes of mercury (II) with Schiff bases derived from amino acids

Autor: Priscila Gubert, Leandro de Oliveira Amaral, Sérgio M. Soares, Robert A. Burrow, Claudia C. Gatto, Sebastião S. Lemos, Viner Sousa Lima, Julia Bornhorst

Publikováno v: Journal of Organometallic Chemistry. 926:121500

Two series of neutral mercury(II) complexes have been obtained from the reaction of HgPh(OCOCH3)(1, 2, and 3) or Hg(OCOCH3)2(4, 5, and 6) with N-(2-hydroxynaphtalidene)β-alanine (L1H2), N-(5-bromo-salicylidene)β-alanine (L2H2), and N-(5-bromo-salic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9d520026a7829b0fb8e8b493e5b397c
https://doi.org/10.1016/j.jorganchem.2020.121500

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Tributyltin(IV) complexes with amino acid-derived Schiff bases: X-ray and solution structures

Autor: Viner Sousa Lima, Sebastião S. Lemos, Gleison A. Casagrande

Publikováno v: Polyhedron. 89:85-90

Four novel tributyltin(IV) complexes of formulae [SnBu3(balabrsalH)] (1), [SnBu3(bphalabrsalH)] (2), [SnBu3(bababrsalH)] (3), and [SnBu3(gababrsalH)] (4), were obtained from the reaction of hexabutyldistannoxane with four amino acid-derived Schiff ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::875b63ae14e4e88807ca872642c7cd74
https://doi.org/10.1016/j.poly.2015.01.009

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On the nuclearity of tricarbonylrhenium(I) complexes with N,O,O-donating Schiff bases derived from amino acids

Autor: Sebastião S. Lemos, Robert A. Burrow, Sérgio M. Soares, Maria J. A. Sales

Publikováno v: Journal of Organometallic Chemistry. 750:80-85

The reaction of [ReBr(CO)5] with AgOOCCH3 followed with N-(2-hydroxynaphtalidene)-β-alanine (bala2hnH2); NEt4[ReBr3(CO)3] with the potassium salt of N-(2-hydroxynaphtalidene)-( d , l )-β-phenylalanine (bphala2hnH2), or with N-(5-bromine-2-hydroxysa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::829ce912eba88952b49a05898f684db3
https://doi.org/10.1016/j.jorganchem.2013.10.027

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A novel organotellurium halide with tellurium presenting mixed oxidation states: Synthesis and structural characterization

Autor: Sebastião S. Lemos, Gleison A. Casagrande, Ernesto Schulz Lang, Cristiano Raminelli

Publikováno v: Inorganica Chimica Acta. 365:492-495

In this work we have investigated the reaction for the obtention of an uncommon complex salt of the organotellurium bromide class. The reaction was carried out without the isolation of the synthetic intermediates in one-pot procedure. The complex sal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a616f8aaaa665508952c0058385ca5a6
https://doi.org/10.1016/j.ica.2010.09.053

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Dithiocarbazate complexes with the [M(PPh3)]2+ (M═Pd or Pt) moiety

Autor: Pedro I. S. Maia, Ulrich Abram, Adriano D. Andricopulo, Jean Jerley Nogueira da Silva, Victor M. Deflon, Sebastião S. Lemos, André Fernandes, Ernesto Schulz Lang

Publikováno v: Journal of Inorganic Biochemistry. 104:1276-1282

New neutral Pd(II) and Pt(II) complexes of the type [M(L)(PPh(3))] (M = Pd or Pt) were prepared in crystalline form in high-yield synthesis with the S-benzyldithiocarbazates and S-4-nitrobenzyldithiocarbazates derivatives from 2-hydroxyacetophenone,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24a2aadd4c300bb0199e6a84e23314d1
https://doi.org/10.1016/j.jinorgbio.2010.08.009

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Oxorhenium(V) Complexes with 2,3-Dihydroxynaphthalene

Autor: Pedro I. S. Maia, Javier Ellena, André Fernandes, Sebastião S. Lemos, Ulrich Abram, Victor M. Deflon, Elizeu J. de Souza

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 636:2467-2470

2,3-Dihydroxynaphthalene (H2dhn) reacts with [ReOCl3(PPh3)2] or [ReOBr3(PPh3)2] in a 1:1 molar ratio with formation of the isostructural complexes [ReOCl2(PPh3)2(Hdhn)] (4) and [ReOBr2(PPh3)2(Hdhn)] (5). They have distorted octahedral coordination sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1306b7055092f78d89debb375a31be80
https://doi.org/10.1002/zaac.201000156

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Preparação e caracterização espectroscópica de complexos de boro: uma proposta para uma prática integrada de química inorgânica

Autor: Sebastião S. Lemos, Karl E. Bessler, Elizeu J. de Souza, Fernanda Batista Gomes, Adriana Torres de Sousa

Publikováno v: Química Nova v.33 n.6 2010
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB

As a proposal for an undergraduate second or third year inorganic laboratory course, the present paper describes the preparation of three representative boron complexes: potassium tetrafluoroborate, pyridoxin boron complex and potassium bis(oxalato)b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9237e9c1007c65e5dbca5bfd211fbca1
https://doi.org/10.1590/s0100-40422010000600034

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Synthesis and structural characterization of cadmium(II) complexes with chelating keto-hydroxy compounds: The X-ray molecular structure of [Cd2(nq)4(H2O)4]·3H2O (nqH = 2-hydroxynaphthoquinone)

Autor: Sérgio M. Soares, Davi F. Back, Ernesto Schulz Lang, Maria J. A. Sales, Sebastião S. Lemos

Publikováno v: Polyhedron. 28:3811-3815

The reaction of cadmium(II) acetate dehydrate with the complexing agents tropolone (tropH), 2-hydroxynaphthoquinone (nqH), 1,2-dihydroxyanthraquinone (alizH2), and 1,8-dihydroxyanthraquinone (chryzH2), afforded the complexes [Cd(trop)2] 1, [Cd2(nq)4(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d519e97e985700d7109a0176314b68b3
https://doi.org/10.1016/j.poly.2009.08.001

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