Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5410648 | Journal of Molecular Liquids | 2015 | 5 Pages |
Abstract
The complex species formed between vanadium(III)-salicylic acid (H2sal) and the small blood serum bioligands: lactic (Hlac), oxalic (H2ox), citric (H3cit) and phosphoric (H3PO4) acids in aqueous solution were studied by means of electromotive force measurements emf (H) at 25 °C and 3.0 mol·dmâ 3 KCl as ionic medium. Data analysis using the least-squares program LETAGROP taking into account the hydrolytic products of vanadium(III) and the formed binaries complexes indicated the formation of V(sal)(lac) complexes, [V(sal)(lac)(OH)]â and [V(sal)(lac)(OH)2]2 â in the vanadium(III)-H2sal-Hlac system. Species V(sal)(Hox)+, [V(sal)(ox)]â were also detected. [V(sal)(ox)(OH)]2 â, [V(sal)2(ox)]3 â and [V(sal)(ox)2]3 â were observed in the vanadium(III)-H2sal-H2ox system; the complexes V(sal)(H2cit), [V(sal)(Hcit)]â, [V(sal)(cit)]2 â and [V(sal)(cit)(OH)]3 â in the vanadium(III)-H2sal-H3cit system and the species V(sal)(H2PO4), [V(sal)(HPO4)]â and [V(sal)(PO4)]2 â were detected in the vanadium(III)-H2sal-H3PO4 system. The corresponding stability constants were estimated.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Ángel E. Santorelli, José Daniel MartÃnez, Mary Lorena Araujo, Felipe Brito, Edgar Del Carpio, Lino Hernández, Vito Lubes,