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

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