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Boletín de la Sociedad Chilena de Química

versão impressa ISSN 0366-1644

Resumo

COSTAMAGNA, JUAN; LILLO, LUIS E.; MATSUHIRO, BETTY  e  VILLAGRAN, MANUEL. POLI-D-GALACTOSAMINA COMO LIGANTE EN LA FORMACION DE COMPLEJOS CON Cu(II) y Ni(II). Bol. Soc. Chil. Quím. [online]. 2000, vol.45, n.3, pp.377-383. ISSN 0366-1644.  http://dx.doi.org/10.4067/S0366-16442000000300007.

The reaction of a-1®4-poly-D-galactosamine with o-salicylaldehyde afforded in good yield the Schiff base which was used as ligand in the formation of complexes with Cu(II) and Ni(II). The complexes were characterized by FT-IR and electronic spectroscopies and, by cyclic voltammetry. The Cu(II) complex presented a ligand:metal ratio of 2:1 and its electrochemical behaviour was similar to that of the complex with the Schiff base of the corresponding monomeric aminosugar. The Ni(II) complex showed a ligand:metal ratio of 3.3:1.0 No change in the this value was found when the Schiff base of the partially degraded polysaccharide was used as ligand.

Palavras-chave : Poly-D-galactosamine; Schiff base; Cu(II) and Ni(II) complexes.

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