Abstract
A sensitive procedure for spectrophotometric determination of cerium(III) has been developed. AtpH 10.2 cerium reacts with 1-(2-pyridylazo)-2-naphthol in 40% ethanol to form a red complex which has an absorption maximum at 545 nm. The molar absorptivity at 545 is 3.95·103 mol−1. Maximum stability of the complex was attained in pure ethanol. The stoichiometries and structures of the chelates were studied applying conductometric titration, visible spectrophotometry and IR spectrophotometry. The IR spectra revealed that coordination takes place through the N=N, C-OH and pyridyl group.
Zusammenfassung
Es wurde eine empfindliche Methode zur spektrophotometrischen Bestimmung von Cer(III) entwickelt. Bei einempH von 10,2 reagiert Cer mit 1-(2-Pyridylazo)-2-naphthol in 40% Ethanol unter Bildung eines roten Komplexes mit einem Absorptionsmaximum bei 545 nm (ε=3 950). Der Komplex besitzt in reinem Ethanol ein Maximum an Stabilität. Die Stöchiometrien und Strukturen der gebildeten 1:1- und 1:2-Chelate wurden mittels konduktometrischer Titration, Elektronen- und IR-Spektrometrie untersucht. Die IR-Daten zeigen, daß die Koordination über N=N, C-OH und Pyridyl erfolgt.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Idriss K. A., Issa I. M., Seleim M. M., J. Appl. Chem. Biotechnol.27, 549 (1977).
Issa I. M., Temerk Y. M., Abu-Zuhri A. Z., El-Meligy M. S., Kamal M. M., Monatsh. Chem.111, 115 (1980).
Idriss K. A., Seleim M. M., Abu-Zuhri A. Z., Indian J. of Chem.17 A, 532 (1979).
Temerk Y. M., Abu-Zuhri A. Z., Kamal M. M., Indian J. of Chem.16 A, 706 (1978).
Mahmoud M. R., Hammam A. M., Ibrahim S. A., J. Inorg. Nucl. Chem.42, 1199 (1980).
Temerk Y. M., Ahmed Z. A., Bull. Soc. Belg.89, 15 (1980).
Kirillov A. I., Turkina L. A., Bragina O. A., Mamaeva E. D., Zh-Anal.37, 32 (1982).
Puschel R., Lassner E., Katzengruber K., Z. Anal. Chem.223, 414 (1966).
Shibata S., Anal. Chim. Acta25, 348 (1961).
Shibata S., Anal. Chim. Acta23, 434 (1960).
Mushran S. P., Prakash Om, Verma J. R., Bull. Chem. Soc. (Japan)45, 1709 (1972).
Shigetomi Y., Kojima T., Kamba H., Talanta27, 1079 (1980).
Shibata S., Anal. Chim. Acta28, 388 (1963).
Scott W., Furman H., Standard Methods of Chem. Analysis, 6th ed. New York: Van Nostrand. 1962.
Britton H. T. S., Hydrogen Ion, 4th ed. New York: Chapman and Hall. 1952.
Yoe G. H., Jones G. A., Indust. Eng. Chem. Analyt. Ed.16, 111 (1944).
Job P., Compt. Rond. (Paris)180, 928 (1925).
Etaiw S. H., Issa I. M., El-Assy N. B., J. Inorg. Nucl. Chem.43, 303 (1981).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Abu-Zuhri, A.Z. Spectrophotometric studies and analytical application of Ce(III) chelates with 1-(2-pyridylazo)-2-naphthol (PAN). Monatsh Chem 115, 57–64 (1984). https://doi.org/10.1007/BF00798421
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00798421