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Mixed ligand complexes of benzimidazole and pyrimidine hydroxy azo dyes with some transition metals and glycine,DL-alanine, orDL-leucine

Ternäre Komplexe von Hydroxyphenylazoverbindungen mit einigen Übergangsmetallen und Glycin,DL-Alanin oderDL-Leucin

  • Anorganische Und Physikalische Chemie
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Summary

The overall formation constants of ternary complexes of Cu(II), Zn(II), and Cd(II) with glycine (Gly),DL-alanine (Ala), orDL-leucine (Leu) as primary and 2-(o-hydroxyphenylazo)-2-cyanomethyl benzimidazole (ABI) and 5-(o-hydroxyphenylazo) barbituric acid (ABA) as secondary ligands as well as those of the binary systems have been investigated potentiometrically in 40% (v/v) EtOH. The stability of the ternary complexes is compared quantitatively with that of the corresponding binary complexes. The concentration distribution of the species formed in solution was evaluated; they were characterized by means of IR and1H NMR spectroscopy.

Zusammenfassung

Die Bildungskonstanten der ternären Komplexe von Cu(II), Zn(II) und Cd(II) mit Glycin (Gly),DL-Alanin (Ala) oderDL-Leucin (Leu) als Primärliganden und 2-(o-Hydroxyphenylazo)-2-cyanomethyl-benzimidazol (ABI) bzw. 5-(o-Hydroxyphenylazo)-barbitursäure (ABA) als Sekundärliganden wurden wurden ebenso wie jene binärer Systeme potentiometrisch in 40% (v/v) Ethanol bestimmt. Die Stabilität der ternären Komplexe wird mit jener der binären verglichen. Die Konzentration der verschiedenen Spezies in Lösung sowie ihre IR- und1H-HMR-Spektren wurden gemessen.

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Authors and Affiliations

  1. Chemistry Department, Faculty of Science, South Valley University, Aswan, Egypt

    A. H. Amrallah, N. A. Abdalla & E. Y. El-Haty

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  1. A. H. Amrallah
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  2. N. A. Abdalla
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  3. E. Y. El-Haty
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Amrallah, A.H., Abdalla, N.A. & El-Haty, E.Y. Mixed ligand complexes of benzimidazole and pyrimidine hydroxy azo dyes with some transition metals and glycine,DL-alanine, orDL-leucine. Monatsh Chem 128, 1073–1084 (1997). https://doi.org/10.1007/BF00807557

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  • DOI: https://doi.org/10.1007/BF00807557

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