Abstract
The equilibria between tungsten(VI) and iminodiacetic acid (IDA) have been studied in aqueous solution. The stoichiometry and stability constants of the complexes formed are determined from a combination of potentiometric and Uv spectroscopic measurements. All measurements are carried out at 25°C, pH 7.5 and different ionic strengths ranging from (0.1 to 1.0) mol dm−3 (NaClO4). According to these results, tungsten(VI) forms a mononuclear complex with IDA of the type (WO3L2−). By introducing two empirical parameters C and D in the complex-formation reaction between tungsten(VI) and IDA, the dependence of the dissociation and stability constants on ionic strength is described by a modified Debye-Huckel-type equation. Finally, a pattern for the ionic strength dependence is obtained.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C. D. Brondino. Proceedings of the 7th European Biological Inorganic Chemistry Conference, Garmisch-Partenkirchen, Germany, 2004, p. 36.
N. P. Lvov, A. N. Nosikov, A. N. Antipov, Biochemistry (Moscow) 67, 196 (2002).
K. Zare, P. Lagrange, and J. Lagrange, J. Chem. Soc., Dalton Trans., 1372 (1979).
R. J. Kula and D. L. Rabenstein, Anal. Chem. 38, 1934 (1966).
J. P. Collin and P. Lagrange, Bull. Soc. Chim. France, 9–10, 1304 (1976).
G. Marcu and M. Tomus, Ser. Chem. 13, 11 (1968).
K. Majlesi, K. Zare, and F. Teimouri, J. Chem. Eng. Data 49, 439 (2004).
K. Majlesi, K. Zare, and F. Teimouri, J. Chem. Eng. Data 48, 680 (2003).
E. J. Billo, Excel for Chemists, 2nd ed. (Wiley, New York, 2001).
F. A. Cotton and G. Wilkinson, Advanced Inorganic Chemistry, 3rd ed. (Wiley, New York, 1972).
G. Spengler and J. Gansheimer, Angew. Chem. 69, 523 (1957).
K. Majlesi and K. Zare, Proceedings of the 18th IUPAC International Conference on Chemical Thermodynamics, Beijing, China 2004 (2004), p. 32.
K. Majlesi and K. Zare Proceedings of the 4th International Symposium on Chemistry and Biological Chemistry of Vanadium, Szeged, Hungary, 2004 (2004), p. L27.
F. Gharib and F. Saeidie Nik, J. Chem. Eng. Data 49, 271 (2004).
F. Gharib and L. Afrazeh Dogaheh, J. Chem. Eng. Data 48, 999 (2003).
C. De Stefano, A. Gianguzza, D. Piazzese, and S. Sammartano, J. Chem. Eng. Data 45, 876 (2000).
P.G. Daniele, C. Rigano, S. Sammartano, and V. Zelano, Talanta 41, 1577 (1994).
P. Daniele, C. Rigano, S. Sammartano. Anal. Chem. 57, 2956 (1985).
F. Gharib, K. Zare, and K. Majlesi, J. Chem. Res., 186 (2000).
F. Gharib, K. Zare, and K. Majlesi, J. Chem. Eng. Data 45, 833 (2000).
F. Gaizer, J. Lazar, J. T. Kiss, and E. Poczik, Polyhedron, 11, 257 (1992).
G. Anderegg, Inorg. Chim. Acta 121, 229 (1986).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Majlesi, K., Zare, K. & Najafi, F. Ionic strength dependence of stability constants, complexation of W(VI) with iminodiacetic acid. Russ. J. Inorg. Chem. 52, 1299–1303 (2007). https://doi.org/10.1134/S0036023607080232
Received:
Issue Date:
DOI: https://doi.org/10.1134/S0036023607080232