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The synthesis and characterization of complexes or uranyl nitrate with pyridine-N-oxide and the three derivatives isomeric forms (2picolíne-N-oxide, 3-picoline-N-oxide and 4-picoline-N-oxide) as ligands are described. They were prepared by reaction of hydrated uranyl nitrate with ligands in ethanolic solution (mo1ar ratio 1:2). The compounds were characterized by CHN microanalyticalprocedures, infrared spectroscopy, x ray power diffraction, TG/DTG and emission spectroscopy. The analytical results suggest de general fornula UOiN03)2.2L and the NO group oxygen. X ray power difracttion pattems do not indicate the presence of isomphism for this series of compounds. The the compounds have luminescence and the thermal decomposition yield a mixture of U03 and U30a as final product.

Síntese e caracterização de compostos de coordenação de nitrato de uranilo aminóxidos aromáticos