Síntese e caracterização de complexos N,N -dietilditiocarbamato de Bi(III), Sn(IV), Ga(III), In(III) e Zn(II) e de seus produtos de decomposição térmica.

AUTOR(ES)

Fabiane Assis Carvalho

DATA DE PUBLICAÇÃO

2009

RESUMO

The literature reports several interesting properties of dithiocarbamate ligands.Therefore, N,N-dietyldithiocarbamate anion has been employed in this work to produce Bi(III), Ga(III), In(III), Zn(II) and organotin complexes, in order to explore its ability as single source precursors of inorganic sulfides, in pyrolysis experiments. The work was divided into two parts. The first one comprised the synthesis of the ligand as sodium salt and the preparation of the complexes. All the compounds have been characterized by NMR, IR, and melting points. Also the thermal behavior of each complex has been studied by thermogravimetric analysis. In the second part of the work the complexes were thermally decomposed and the corresponding products were characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy (except the organotin complex which was characterized by 119Sn Mössbauer Spectroscopy) and electronic spectroscopy.

ASSUNTO(S)

físico-química teses. química teses. ciencia dos materiais teses. carbamatos teses. análise térmica teses.

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