Study of the Ternary Complex Formation between Vanadium(III)-Cysteine and Small Blood Serum Bioligands |
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| Authors: | Héctor Rosas Leidy Erika Sarmiento Vito Lubes María Goncalves Mary Lorena Araujo Felipe Brito |
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| Institution: | (1) Departamento de Química, Universidad Simón Bolívar (USB), Apartado 89000, Caracas, 1080 A, Venezuela;(2) Centro de Equilibrios en Solución, Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela |
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| Abstract: | The complex species formed between vanadium(III) cysteine and small blood serum bioligands: lactic, oxalic, citric and phosphoric
acids were studied in aqueous solution by means of electromotive force measurements, Emf(H), at 25 °C and 3.0 mol⋅dm−3 KCl as the ionic medium. The ternary complexes were studied by potentiometric measurements and the data analyzed using the
least-squares computational program LETAGROP to obtain the respective stability constants and stoichiometric coefficients.
The UV-Vis spectrophotometric measurements were done in order to make a qualitative characterization of the complexes formed
in aqueous solution. |
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| Keywords: | Vanadium(III) complexes Cysteine Potentiometric studies Speciation Ternary complexes |
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