Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Anuar ABRAS"'
Publikováno v:
Eclética Química, Vol 23, Iss 1 (2018)
Por reação de quantidades eqüimoleculares de R2SnO ou R2SnCl2 (R = -CH3; -C4H9) com ácido dl-mandélico, C6H5CH(OH)COOH, em meio de etanol, foram obtidos novos compostos formulados como [(LR2Sn)2O] [L= C6H5CH(OH)COO-], nos quais o átomo de estan
Externí odkaz:
https://doaj.org/article/2d16d5f4458441bda1e1fb288a61e701
Publikováno v:
Eclética Química, Vol 23, Iss 1 (2018)
Eclética Química, Volume: 23, Pages: 17-30, Published: 1998
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB
Eclética Química v.23 1998
Eclética Química
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron:UNESP
Eclética Química, Volume: 23, Pages: 17-30, Published: 1998
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB
Eclética Química v.23 1998
Eclética Química
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron:UNESP
Por reação de quantidades eqüimoleculares de R2SnO ou R2SnCl2 (R = -CH3; -C4H9) com ácido dl-mandélico, C6H5CH(OH)COOH, em meio de etanol, foram obtidos novos compostos formulados como [(LR2Sn)2O] [L= C6H5CH(OH)COO-], nos quais o átomo de estan
Autor:
Carlos A. L. Filgueiras, Rubén A. Toscano, Anuar Abras, Jesús Valdés-Martínez, Georgina E. Pérez, Gerimário F. de Sousa
Publikováno v:
Journal of the Brazilian Chemical Society, Vol 13, Iss 5, Pp 565-569 (2002)
Journal of the Brazilian Chemical Society, Volume: 13, Issue: 5, Pages: 559-564, Published: SEP 2002
Journal of the Brazilian Chemical Society v.13 n.5 2002
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 13, Issue: 5, Pages: 559-564, Published: SEP 2002
Journal of the Brazilian Chemical Society v.13 n.5 2002
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
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
Publikováno v:
Hyperfine Interactions. 142:495-501
Several novel tin(IV) adducts of amidines, [SnClPh3L], [SnCl2Ph2L] and [SnBr4L] {L=N,N-diphenylacetamidine (Hdpac) or N,N-diphenylbenzamidine (Hdpba)}, were prepared and investigated by Mossbauer spectroscopy which was an important tool for the eluci
Autor:
Gerimário F. de Sousa, Regina Helena de Almeida Santos, Anuar Abras, R. H. P. Francisco, M. Teresa do P. Gambardella
Publikováno v:
Journal of the Brazilian Chemical Society, Vol 12, Iss 6, Pp 722-728 (2001)
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB
Journal of the Brazilian Chemical Society v.12 n.6 2001
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 12, Issue: 6, Pages: 722-728, Published: DEC 2001
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB
Journal of the Brazilian Chemical Society v.12 n.6 2001
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 12, Issue: 6, Pages: 722-728, Published: DEC 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
Autor:
Rosalice M. Silva, Ana P. G. De Sousa, John C. Huffman, Amary Cesar, Anuar Abras, James L. Wardell
Publikováno v:
Journal of Organometallic Chemistry. 605:82-88
Characterization of Ph 2 Sn(Cl)(MBT) ( 1 ) (HMBT=2-mercaptobenzothiazole) has been carried out by IR, Mossbauer, 1 H, 13 C and 119 Sn spectroscopies and by X-ray crystallography for 1 together with that of Ph 2 Sn(SCH 2 CH 2 S) ( 2 ). Compound 1 , un
Autor:
Marcelo J. D. M. Jannini, A.M. de Wit, Regina Buffon, Anuar Abras, F.J.A. Kellendonk, Johannes C. Mol
Publikováno v:
Journal of Molecular Catalysis A-Chemical, 149, 275-282. Elsevier
The reaction of tetrabutyltin with an alumina-containing inorganic oxide such as alumina, silica–alumina or boria–alumina, gives active catalysts for olefin metathesis. Infrared results obtained with tin-modified γ-alumina and boria–alumina su
Autor:
Ana P. G. De Sousa, Carlos A. L. Filgueiras, Manfredo Hörner, James L. Wardell, Rosalice M. Silva, Anuar Abras, Adailton J. Bortoluzzi, Carla V. Rodarte de Moura
Publikováno v:
Polyhedron. 18:2961-2969
Reactions between Ph 3 SnCl and the sodium salts of 5-mercapto-1-methyltetrazole (MTS-H), 2-mercaptobenzoxazole (MBZ-H), 2-mercaptobenzothiazole (MBT-H) and 2-mercapto-1-methylimidazole (MMI-H) gave Ph 3 Sn(MTS) ( 5 : R=Ph, R′=Me), Ph 3 Sn(MBZ) 6 ,
Publikováno v:
Transition Metal Chemistry. 24:321-325
The coordinating ability of the ligand di(2-pyridyl)sulphide, dps, was studied in several situations. Dps behaved as a bidentate chelating agent with SnX4 (X=Cl or Br) and also with Pd and Pt (PdCl2 and K2PtCl4), whereas with [Pt2(PR3)2Cl4], (R = Et
Publikováno v:
Hyperfine Interactions. 122:185-188
Crystals of the semiconductors Pb0.78Sn0.22Te and Pb0.80Sn0.20Te:In were grown by Bridgman method, and investigated by Mossbauer spectroscopy and X-ray diffraction. Mossbauer spectra were taken at temperatures between 80 and 300 K. The absence of the