Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Waleria P. Silva"'
Publikováno v:
Transition Metal Chemistry. 34:677-681
The reaction between Fe(III) and dopamine in aqueous solution in the presence of Na2S2O3 was followed through UV–Vis spectroscopy, pH and oxy-reduction potential (Eh) measurements. The formation and quick disappearing of the complex [Fe(III)HL1−]
Publikováno v:
Journal of Inorganic Biochemistry. 102:359-363
A spectroscopic study was performed showing that the [Fe(III)(L 2− ) 2 ] 1− (L 2− = dopacatecholate) complex reacts with Ni(II), Co(II) and Zn(II) in an aqueous solution containing S 2 O 3 2 - resulting in the soluble [M(L 1− ) 3 ] 1− (L 1
Autor:
Waleria P. Silva, Ieda Spacino Scarminio, Wagner José Barreto, Luís F. Stucchi Silva, Sônia Regina Giancoli Barreto
Publikováno v:
Zeitschrift für Naturforschung B. 62:685-690
A kinetic and spectroscopic study was performed on the substitution of Fe(III) by Ni(II) in the water soluble anion [Fe(L1−)2L2−]−, a siderophore model (L− = dopa-semiquinone and L2− = dopacatecholate). The reaction was followed in the UV/v
Autor:
Wagner José Barreto, Eduardo Di Mauro, Yoshio Kawano, Sônia Regina Giancoli Barreto, Herica Aparecida Magosso, Silvia Ponzoni, Waleria P. Silva
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 136:701-712
Dopamine oxidation by iron oxide (Fe2O3) was studied in the presence and absence of sodium thiosulfate in aqueous medium around pH 7 by UV-Vis spectroscopy. The pH changes from 6 to 8 indicate that the dopamine oxidation process has occurred producin
Publikováno v:
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 68(3)
An UV–vis, Raman, IR and EPR spectroscopic study was performed for the water soluble complexes of Fe(III), Ni(II), Co(II) and Zn(II) coordinated to dioxolene ligands derived from oxidized dopamine. The complexes were obtained and stabilized at neut