4-Dimethylaminocinnamylidenepyruvic acid: Synthesis, characterization and complexation with trivalent lanthanides, yttrium(III), scandium(III), thorium(IV) and uranium(VI) in aqueous solution

Pereira, N. C S; Melios, C. B.; Marques, R. N.; Siqueira, O. S.; De Moraes, M.; Molina, M.; Ionashiro, Massao

Otro

Registro en:

Journal of Alloys and Compounds, v. 249, n. 1-2, p. 94-98, 1997.

0925-8388

http://hdl.handle.net/11449/65075

http://acervodigital.unesp.br/handle/11449/65075

10.1016/S0925-8388(96)02743-0

WOS:A1997XC09200018

2-s2.0-0041596944

http://dx.doi.org/10.1016/S0925-8388(96)02743-0

http://repositorioslatinoamericanos.uchile.cl/handle/2250/886833

Autor

Pereira, N. C S

Melios, C. B.

Marques, R. N.

Siqueira, O. S.

De Moraes, M.

Molina, M.

Ionashiro, Massao

Institución

Universidade Paulista Júlio de Mesquita Filho (Brasil)

Resumen

4-Dimethylaminocinnamylidenepyruvic acid (H-DMCP)and its sodium salt (Na-DMCP) have been synthesized and characterized. The protonation constant of DMCP as well as the stability constants of its binary 1:1 complexes with trivalent lanthanides (except Pm), Yttrium(III), Scandium(III), Thorium(IV) and Uranium(VI) were determined in an aqueous medium at 25°C and ionic strength 0.500 M. The mode of coordination of this ligand is discussed.

Materias

Cinnamylidenepyruvates

Metal-ion complexes

Protonation

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