Avances en Química (Dec 2011)

Complejos de V(III) en solución acuosa con el ácido aminopolicarboxílico CDTA

  • Lino Hernández,
  • Giuseppe Lubes,
  • Mildred Rodriguez,
  • Lorenzo Echevarria,
  • Vito Lubes

Journal volume & issue
Vol. 6, no. 3
pp. 95 – 99

Abstract

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Electromotive forces measurements emf (H) were employed to study the formation of the Vanadium(III) complexes with the aminopolycarboxylic acid trans-1,2-diaminocyclohexane-N,N,N',N'-tetraethanoic (CDTA, H4L) in aqueous solution at 25 °C in 3.0mol.L-1 KCl as the ionic media. The analysis of the potentiometric data by means of the least-squares computational program LETAGROP, indicates the formation of significant quantities of the complexes [VHL], [VL]- and [V(OH)L]2- together with their respective stability constants of each complex. In addition to the LETAGROP analysis UV-Vis spectrophotometric measurements were done in order to make a qualitative characterization of the complexes formed in aqueous solution

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