CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Spectroscopic Investigation of the VO(2+)/Hyaluronate Interaction
Autor/es:
WILLIAMS, PAM; BARAN, ENRIQUE JOSÉ
Revista:
CARBOHYDRATE POLYMERS
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 86 p. 1385 - 1385
ISSN:
0144-8617
Resumen:
   An oxovanadium(IV) complex was prepared by interaction of aqueous solutions of VOSO4·5H2O and sodium hyaluronate, at controlled pH-values, under nitrogen atmosphere, and subsequent precipitation with absolute ethanol. The complex formation and the characteristics of the VO2+/hyaluronate interactions were confirmed by vibrational (IR and Raman) and UV–vis electronic absorption spectroscopy. Only the carboxylate groups of the glucuronic acid moiety of the polymer are involved in coordination, acting as monodentate ligands. The suggested coordination is similar to that found in the analogous Cu(II), Mn(II) and Ni(II) complexes.4·5H2O and sodium hyaluronate, at controlled pH-values, under nitrogen atmosphere, and subsequent precipitation with absolute ethanol. The complex formation and the characteristics of the VO2+/hyaluronate interactions were confirmed by vibrational (IR and Raman) and UV–vis electronic absorption spectroscopy. Only the carboxylate groups of the glucuronic acid moiety of the polymer are involved in coordination, acting as monodentate ligands. The suggested coordination is similar to that found in the analogous Cu(II), Mn(II) and Ni(II) complexes.2+/hyaluronate interactions were confirmed by vibrational (IR and Raman) and UV–vis electronic absorption spectroscopy. Only the carboxylate groups of the glucuronic acid moiety of the polymer are involved in coordination, acting as monodentate ligands. The suggested coordination is similar to that found in the analogous Cu(II), Mn(II) and Ni(II) complexes.