Speciation of the vanadium(III)–acetylacetone system in 3.0M KCl ionic medium at 25 C

dc.creatorBrito, Felipe
dc.creatorAraujo, Mary Lorena
dc.creatorMartínez, José Daniel
dc.creatorHernández, Y.
dc.creatorMohy, A.
dc.creatorLubes, Vito
dc.date2017-02-14T15:59:17Z
dc.date2017-02-14T15:59:17Z
dc.date2017-02-14
dc.date.accessioned2022-10-28T01:21:13Z
dc.date.available2022-10-28T01:21:13Z
dc.identifier0095-8972
dc.identifierhttp://hdl.handle.net/10872/14473
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4948094
dc.descriptionA study of the Hþ-acetylacetone (acac, HC) and Hþ–V3þ-acetylacetone systems using emf(H) and UV–Vis measurements in 3.0M KCl ionic medium at 25 C is presented here. As the initial case, the acetylacetone pKa value was determined under similar experimental conditions as reported a few years ago, finding very similar values. Subsequently, in the study of the Hþ–V3þ- acetylacetone system, the stability constants of [VC]2þ, [VC2]þ, VC3, [OHVC]þ, OHVC2, [(OH)2V2C]3þ and [(OH)2V2C2]2þ complexes were determined by emf(H) measurements, and by means of UV–Vis measurements the respective values of [VC]2þ, [VC2]þ, VC3 and [OHVC]þ species, which are the most abundant in this system. The data analysis was carried out using the NERNST, FONDO, and SPEFO versions of the least-squares program LETAGROP. Some extra-thermodynamic relationships about the stability order of the VII, VIII, and VIV-acetylacetone complexes were obtained by ab initio calculations.
dc.languageen
dc.subjectAcetylacetone;
dc.subjectVanadium(III) complexes
dc.subjectEmf(H) and UV–Vis measurements
dc.subjectStability constants
dc.subjectLETAGROP program
dc.titleSpeciation of the vanadium(III)–acetylacetone system in 3.0M KCl ionic medium at 25 C
dc.typeArticle


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