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Speciation of the new ligand di-isopropyliminodiacetoamide with Cu(II) using computational processing and graphical
Margarita Bernabé-Pineda1, María Teresa Ramírez-Silva, Rafael Tapia-Benavides
1Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Apdo Postal 55-534, C.P. 09340 Mexico City, DF, Mexico.
Abstract:
The importance assigned to chelating agents in diverse areas has impelled studies concerning their development as related to metal ions representing a biological concern. The synthesis of di-isopropyliminodiacetoamide (D) is presented in this work. The acidity constant obtained for D was pKa = 5.79 +/- 0.04 with the aid of program SUPERQUAD. The equilibrium constants for D with Cu(II) were obtained with the aid of program SQUAD for CuD2+ and CuD2(2)+ species giving log beta1 = 4.795 +/- 0.002 and log beta2 = 8.374 +/- 0.004, respectively.