| Élément Dublin Core | Valeur | Langue |
|---|
| dc.contributor.author | Sousa, Gerimário F. de | pt_BR |
| dc.contributor.author | Deflon, Victor Marcelo | pt_BR |
| dc.contributor.author | Niquet, Elke | pt_BR |
| dc.contributor.author | Abras, Anuar | pt_BR |
| dc.date.accessioned | 2017-12-07T04:34:03Z | - |
| dc.date.available | 2017-12-07T04:34:03Z | - |
| dc.date.issued | 2001 | pt_BR |
| dc.identifier.citation | SOUSA, Gerimário F. de et al. 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)]. Journal of the Brazilian Chemical Society, São Paulo, v. 12, n. 4, p. 493-498, jul./ago. 2001. DOI: https://doi.org/10.1590/S0103-50532001000400009. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000400009&lng=en&nrm=iso. Acesso em: 12 jan. 2021. | pt_BR |
| dc.identifier.uri | http://repositorio.unb.br/handle/10482/25775 | - |
| dc.description.abstract | As reações do ligante 2,6-diacetilpiridina bis(4-feniltiossemicarbazona), H2dappt, com R4-mSnXm (m = 2, 3; R = Me, nBu, Ph e X = Cl) resultaram na formação de quatro novos complexos organoestânicos heptacoordenados, os quais foram caracterizados por análise elementar e pelas espectroscopias no IV e Mössbauer. O derivado n-butila, [nBu2Sn(dappt)]·(Me 2CO)0.5, foi também analisado por um estudo de difração de raios X em um monocristal. O complexo cristalizou-se no sistema monoclínico e grupo espacial C2/c, com a = 36,164(14), b = 9,7050(15), c = 26,194(11) Å, beta = 132,00(2)º, Z = 8. A determinação da estrutura revelou um complexo neutro de Sn(IV), numa geometria bipiramidal pentagonal (BPP), com o plano equatoral definido pelos átomos doadores SNNNS do ligante e dois grupos n-bultila nas posições axiais. Também é discutida uma correlação entre os dados de Mössbauer e de difração de raios X, baseada no modelo da carga-pontual. | pt_BR |
| dc.language.iso | en | pt_BR |
| dc.publisher | Sociedade Brasileira de Química | pt_BR |
| dc.rights | Acesso Aberto | pt_BR |
| dc.title | 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)] | pt_BR |
| dc.type | Artigo | pt_BR |
| dc.subject.keyword | Química inorgânica | pt_BR |
| dc.subject.keyword | Raio X - difração | pt_BR |
| dc.subject.keyword | Espectroscopia | pt_BR |
| dc.rights.license | Journal of the Brazilian Chemical Society - All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License (CC BY NC 4.0). Fonte: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000400009&lng=en&nrm=iso&tlng=en. Acesso em: 12 jan. 2021. | - |
| dc.identifier.doi | https://dx.doi.org/10.1590/S0103-50532001000400009 | pt_BR |
| dc.description.abstract1 | 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 microanalyses and by IR and Mössbauer spectroscopies. The n-butyl derivative [nBu2Sn(dappt)]·(Me 2CO)0.5 was also analyzed by a single crystal X-ray diffraction study. It crystallized in the monoclinic system with a space group C2/c, with a = 36.164(14), b = 9.7050(15), c = 26.194(11) Å, beta = 132.00(2)º, Z = 8. The structure determination revealed a neutral complex of Sn(IV) in a distorted pentagonal bipyramidal (PBP) geometry, with the equatorial plane defined by the SNNNS donor system of the ligand and with the two n-butyl groups in the axial positions. Also, a correlation between Mössbauer and X-ray data based on the point-charge model is discussed. | - |
| dc.description.abstract1 | 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 microanalyses and by IR and Mössbauer spectroscopies. The n-butyl derivative [nBu2Sn(dappt)]·(Me 2CO)0.5 was also analyzed by a single crystal X-ray diffraction study. It crystallized in the monoclinic system with a space group C2/c, with a = 36.164(14), b = 9.7050(15), c = 26.194(11) Å, beta = 132.00(2)º, Z = 8. The structure determination revealed a neutral complex of Sn(IV) in a distorted pentagonal bipyramidal (PBP) geometry, with the equatorial plane defined by the SNNNS donor system of the ligand and with the two n-butyl groups in the axial positions. Also, a correlation between Mössbauer and X-ray data based on the point-charge model is discussed. | - |
| dc.description.unidade | Instituto de Química (IQ) | pt_BR |
| Collection(s) : | Artigos publicados em periódicos e afins
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