Solid-state compounds of 2-methoxybenzylidenepyruvate and 2-methoxycinnamyllidenepyruvate with thorium (IV) Preparation and thermal studies
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Data
2011-12-01
Autores
Schnitzler, E.
Bannach, Gilbert [UNESP]
Treu-Filho, O. [UNESP]
Carvalho, C. T.
Ionashiro, M. [UNESP]
Título da Revista
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Editor
Springer
Resumo
Solid-state compounds of general formula ThL(4)center dot nH(2)O, where L represents 2-methoxybenzylidenepyruvate and 2-methoxycynamylidenepyruvate, were synthesized. Complexometric titrations with EDTA, thermogravimetry (TG), differential thermal analysis (DTA), X-ray powder diffractometry, elemental analysis (EA), and infrared spectroscopy have been employed to characterize and to study the thermal behavior of these compounds in dynamic air atmosphere. The results led to informations about the composition, dehydration, crystallinity, and thermal decomposition of the isolated compounds. The performed molecular calculations in this study were done using the Gaussian 03 routine. Theoretical calculations help in interpretations of FT-IR spectra supplying structural and physicochemical parameters.
Descrição
Palavras-chave
Thorium (IV), Thermal behaviour, 2-methoxybenzylidenepyruvate, 2-methoxycinnamyllidenepyruvate
Como citar
Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 106, n. 3, p. 643-649, 2011.