Výsledky vyhledávání - "Sousa Gerimário F. de"

Akademický článek

Heptacoordination in Organotin(IV) Complexes: Spectroscopic and Structural Studies of 2,6-Diacetylpyridine bis(thiosemicarbazone)di-n-butyltin(IV) Chloride Nitromethane Solvate, [nBu2Sn(H2daptsc)]Cl 2?MeNO2 and of 2,6-Diacetylpyridine bis(semicarbazone)dimethyltin(IV) trans-Tetrachlorodimethylstannate(IV), [Me2Sn(H2dapsc)][Me2 SnCl4]

Autor: Sousa Gerimário F. de, Valdés-Martínez Jesús, Pérez Georgina E., Toscano Rubén A., Abras Anuar, Filgueiras Carlos A. L.

Publikováno v: Journal of the Brazilian Chemical Society, Vol 13, Iss 5, Pp 565-569 (2002)

Two new cases of heptacoordination in organotin(IV) complexes are described. Both possess pentagonal bipyramidal geometry and show the organic groups on the axial positions, with the ligands forming five bonds to tin(IV) on the equatorial plane. The

Externí odkaz: https://doaj.org/article/21dd926133df4d43be05c56f9abbec29

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Akademický článek

Synthesis and characterization of heptacoordinated tin(IV) complexes. X-ray crystal structure of [nBu2Sn(dappt)]·(Me 2CO)0.5 [H2dappt = 2,6-diacetylpyridine bis(4-phenylthiosemicarbazone)]

Autor: Sousa Gerimário F. de, Deflon Victor M., Niquet Elke, Abras Anuar

Publikováno v: Journal of the Brazilian Chemical Society, Vol 12, Iss 4, Pp 493-498 (2001)

The reactions of the 2,6-diacetylpyridine bis(4-phenylthiosemicarbazone) ligand, H2dappt, with R4-mSnXm (m = 2, 3; R = Me, nBu, Ph and X = Cl) led to the formation of four new heptacoordinated organotin(IV) complexes, which were characterized by micr

Externí odkaz: https://doaj.org/article/83cb55fc9f9f40acaa7caa7be53b5aba

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Akademický článek

Organotin(IV) Derivatives of 2-Acetylpyridine-N(4)-Phenylthiosemicarbazone, HAP4P, and 2-Hydroxyacetophenone-N(4)-Phenylthiosemicarbazone, H2DAP4P: Crystal and Molecular Structure of [SnMe2(DAP4P)] and [SnBu2(DAP4P)]

Autor: Sousa Gerimário F. de, Francisco Regina H. P., Gambardella M. Teresa do P., Santos Regina H. de A., Abras Anuar

Publikováno v: Journal of the Brazilian Chemical Society, Vol 12, Iss 6, Pp 722-728 (2001)

The reactions of 2-acetylpyridine-N(4)-phenylthiosemicarbazone, HAP4P, and 2-hydroxyacetophenone-N(4)-phenylthiosemicarbazone, H2DAP4P, with R4-mSnXm (m = 2, 3; R = Me, nBu, Ph and X = Cl, Br) led to the formation of hexa- and penta-coordinated organ

Externí odkaz: https://doaj.org/article/031c3be2b3924d71bc5057a0bc72ccce

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Akademický článek

New Heptacoordinated Organotin(IV) Complexes Derivatives of 2,6-diacetylpyridinebis(2-furanoylhydrazone), H2dapf, and 2,6-diacetylpyridinebis(2-thenoylhydrazone), H2dapt: Crystal and Molecular Structure of [Me2Sn(Hdapt]Br.H2O

Autor: Sousa Gerimário F. de, Mangas Maria B.P., Francisco Regina H.P., Gambardella Maria T. do P., Rodrigues Ana M.G.D., Abras Anuar

Publikováno v: Journal of the Brazilian Chemical Society, Vol 10, Iss 3, Pp 222-230 (1999)

The reaction of the ligands H2dapf and H2dapt, with R4-mSnXm (m = 2, 3; R = Me, Ph and X = Cl, Br) led to the formation of eight new heptacoordinated organotin(IV) complexes, which were studied by microanalysis, IR, NMR and Mössbauer spectroscopy to

Externí odkaz: https://doaj.org/article/2185de3977ce4c2ba1289e2bbeca606c

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Akademický článek

Synthesis, spectroscopic characterization and X-ray structures of five-coordinate diorganotin(IV) complexes containing 5-hydroxypyrazoline derivatives as ligands

Autor: Sousa, Gerimário F. de, Garcia, Edgardo, Gatto, Claudia C., Resck, Inês S., Deflon, Victor M., Ardisson, José D.

Publikováno v: In Journal of Molecular Structure 2010 981(1):46-53

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Heptacoordination in Organotin(IV) Complexes: Spectroscopic and Structural Studies of 2,6Diacetylpyridine bis(thiosemicarbazone)dinbutyltin(IV) Chloride Nitromethane Solvate, [nBu2Sn(H2daptsc)]Cl 2MeNO2 and of 2,6Diacetylpyridine bis(semicarbazone)dimethyltin(IV) transTetrachlorodimethylstannate(IV), [Me2Sn(H2dapsc)][Me2 SnCl4]

Autor: Sousa, Gerimário F. de, Valdés-Martínez, Jesús, Pérez, Georgina E., Toscano, Rubén A., Abras, Anuar, Filgueiras, Carlos A. L.

Publikováno v: Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB

Dois novos casos de heptacoordenação em complexos organoestânicos(IV) são descritos. Ambos possuem geometria pentagonal bipiramidal e mostram os grupos orgânicos nas posições axiais, com os ligantes formando cinco ligações no plano equatoria

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::12958b2a26c6a7f96c24153324fa1760
http://repositorio.unb.br/handle/10482/25916

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Periodical

Biomimetic oxovanadium(IV) and (V) complexes with a tridentate (N,N,O)-donor hydrazonic ligand. Two X-ray crystal structure modifications of (2-acetylpyridine-benzoylhydrazonato)dioxovanadium(V)

Autor: Maia, Pedro Ivo da S., Deflon, Victor M., Souza, Elizeu J. de., Garcia, Edgardo, Sousa, Gerimário F. de., Batista, Alzir A., Figueiredo, Alberthmeiry T. de., Niquet, Elke

Publikováno v: Transition Metal Chemistry; May 2005, Vol. 30 Issue: 4 p404-410, 7p

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Akademický článek

(2-Acetylpyridine-κ N 4-phenylthiosemicarbazonato-κ² N¹, S)halogeno- trans-dimethyltin(IV) (halogeno = chloro and bromo).

Autor: Francisco, Regina H. P., Gambardella, M. Teresa do P., Sousa, Gerimário F. de, Abras, Anuar

Publikováno v: Acta Crystallographica: Section C (Wiley-Blackwell); Feb2000, Vol. 56 Issue 2, p187-189, 3p

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Periodical

(2‐Acetylpyridine‐κN4‐phenylthiosemicarbazonato‐κ2N1,S)halogeno‐trans‐dimethyltin(IV) (halogeno = chloro and bromo)

Autor: Francisco, Regina H. P., Gambardella, M. Teresa do P., Sousa, Gerimário F. de, Abras, Anuar

Publikováno v: Acta Crystallographica Section C: Crystal Structure Communications; February 2000, Vol. 56 Issue: 2 p187-189, 3p

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