Detalhes bibliográficos
Ano de defesa: |
2013 |
Autor(a) principal: |
Farias, Renan Lira de
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Orientador(a): |
Oliveira, Adriano Bof de
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Banca de defesa: |
Não Informado pela instituição |
Tipo de documento: |
Dissertação
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Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Não Informado pela instituição
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Programa de Pós-Graduação: |
Pós-Graduação em Química
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Departamento: |
Não Informado pela instituição
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País: |
Não Informado pela instituição
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Palavras-chave em Português: |
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Palavras-chave em Inglês: |
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Área do conhecimento CNPq: |
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Link de acesso: |
https://ri.ufs.br/handle/riufs/6108
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Resumo: |
The reaction of (3,4-methylenedioxy)acetophenone and thiosemicarbazide in a 3:1 mixture of ethanol and water was refluxed for 6h and yielded a completely new thiossemicabazone derivative. After cooling and filtering, crystals suitable for X-ray diffraction were obtained. The molecular structure of the tetralone-thiosemicarbazone, C11H13N3S, is not planar: the maximum deviations from the mean planes of the non-H atoms are 0.0325 (12) A and 0.0707 (10) A, respectively, which subtend a dihedral angle of 29.06(05)o. In the crystal, molecules are linked into chains by pairs of N-H¡E¡E¡ES hydrogen bonds, a N-H¡E¡E¡EO and weak interactions forming a three-dimensional structure. The molecule shows a trans conformation. Through 1H NMR spectrum was observed that the tautomeric thione form is predominant in solution. All starting materials were commercially available and were used without further purification. The synthesis was adapted from a procedure reported previously. The crystal data are: space group monoclinic, P21/c, and the cell constants are a = 6.1423(12) A, b = 26.065(5) A, c = 7.1289(14) A e Ò = 109.07(3) o. |