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Effect of temperature on the extraction of octahedral and tetrahedral cobalt(II) by 8-hydroxyquinoline and/or dibenzo-18-crown-6 or dibenzylamine

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Abstract

The extraction behavior of octahedral and tetrahedral cobalt(II) complexes from aqueous nitrate medium was studied in the system 8-hydroxyquinoline (HOX) and dibenzo-18-crown-6 (Db 18C6) or dibenzylamine (DBA) in chloroform at different temperatures to evaluate the thermodynamic functions as well as the equilibrium constants of each reaction. The stoichiometry of the extracted organic phase species were established to be Co(OX)2·Db18C6 for the octahedral cobalt and Co(OX)2·DBA for the tetrahedral cobalt.

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Authors and Affiliations

  1. Hot Laboratories Centre, Atomic Energy Authority, 13759, Cairo, Egypt

    F. A. Shehata, S. I. El-Dessouky & H. F. Aly

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  1. F. A. Shehata
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  2. S. I. El-Dessouky
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  3. H. F. Aly
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Shehata, F.A., El-Dessouky, S.I. & Aly, H.F. Effect of temperature on the extraction of octahedral and tetrahedral cobalt(II) by 8-hydroxyquinoline and/or dibenzo-18-crown-6 or dibenzylamine. J Radioanal Nucl Chem 240, 209–214 (1999). https://doi.org/10.1007/BF02349155

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  • DOI: https://doi.org/10.1007/BF02349155

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