Summary
The chelation behaviour of the complexes of La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Y3+, Tb3+, Dy3+, Ho3+ with biologically active 2-Hydroxy-1-naphthaldehyde semicarbazone (HNAS) has been studied potentiometrically in 75% (v/v) dioxane-water medium at various ionic strengths. The method of Bjerrum and Calvin, as modified by Irving and Rossotti has been used to find out the values of n andpL. The formation constants of metal chelates and the values ofS min have been calculated. The order of formation constants of chelates was found to be: La3+<Ce3+<Pr3+<Nd3+<Sm3+<Eu3+<Gd3+<Y3+<Tb3+<Dy3+<Ho3+.
Zusammenfassung
Das Chelierungsverhalten von La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Y3+, Tb3+, Dy3+ und Ho3+ mit 2-Hydroxy-1-naphthaldehydsemicarbazon (HNAS) wurde potentiometrisch in 75% (v/v) Dioxan-Wasser bei verschiedenen Ionenstärken untersucht. Die Werte für n undpL wurden nach der Methode von Bjerrum und Calvin in der Modifikation von Irving und Rossotti bestimmt. Die Komplexbildungskonstanten der Metallchelate und die WerteS min wurden ermittelt. Die Reihung der Komplexbildungskonstanten war La3+<Ce3+<Pr3+<Nd3+<Sm3+<Eu3+<Gd3+<Y3+<Tb3+<Dy3<Ho3+.
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References
Moeller T., Martin D. F., Thompson L. G., Fernes R., Fiestal G. R., Randall W. J. (1965) Chem. Rev.65: 1
Moeller T., Birnbaum E. R., Forsherg J. H., Gayhart R. B. (1968) In: Eyring L. (ed.) Progress in the Science and Technology of Rare Earths, Vol. 3. Pergamon, New York, pp. 61–128
Sinha S. P. (1966) Complexes of Rare Earths. Pergamon, New York
Bhaskare C. K., Kulkarni P. L., Hankare P. P. (1983). J. Shivaji University Sci.,19: 13–15
Deguchi M., Ananda K., Morishige K. (1983) Kikku31(2: 71–75
Samsus N. M., Shlyakhov E. N., Kelamu S., Burdenko T. A., Chaika T. S., Trapkov V. I., Popev V. I. (1987) Khim. Farm. Zh.21(4: 446–449
Wickann K., Krusius T., Sinervirta R., Puranen J. (1986) J. (Dep. Biochem. Med. Chem. Univ. Helsinki) Contraception33(5: 519–528
Domagk G., Behnisch R., Mietzsch F., Schmidt H. (1946) Naturwissenschaften33: 315
Bareet P. A. (1965) Nature206: 1340
Bauer D. J., Vincent L. S., Kempe C. H., Downe A. W. (1965) Lancet2: 494
Sahadev, Sharma R. K., Sindhwani S. K. (1988) Indian J. Chem. Vol.27A: 643–644
Sahadev, Sharma R. K., Sindhwani S. K. (1988) Thermochimica Acta126: 1–6
Varshney A., Tandon J. P., Crowe A. J. (1986) Polyhedron, Vol.5(3: 739–742
Irving H. M., Rossotti H. S. (1954) J. Chem. Soc., 2904
Sullivan J. C., Rydberg J., Miller W. F. (1959) Acta Chem. Scand.13: 2023
Rydberg J., Sullivan J. C. (1959) Acta Chem. Scand.13: 2059
Martell A. E., Smith R. M. (1974) Critical Stability Constants, Vol. 1 New York, Plenum
Nair P. K. R., Srinivasulu K. J. (1979) Inorg. Nucl. Chem.41: 251
Bjerrum J. (1941) Metal Ammine formation in Aqueous Solutions, 298. Hasse, Copenhagen
Stability constants of metal ion complexes, Part I (1957) The Chemical Soc., London, Special Publication, pp. 2, 3, 5, 10, 13
Nasanen R., Ekman A. (1952) Acta Chim. Scand6: 1389
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Sharma, S.R.K., Sindhwani, S.K. Physico-chemical studies on the chelation behaviour of biologically active 2-hydroxy-1-naphthaldehyde semicarbazone (HNAS) with some lanthanons. Monatsh Chem 123, 25–33 (1992). https://doi.org/10.1007/BF01045293
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DOI: https://doi.org/10.1007/BF01045293