Thorium(IV) and uranium(VI) complexes with some heterocyclic azo dyes in absolute ethanol |
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Authors: | P Askalani F M Mikhail |
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Institution: | (1) The American University in Cairo, Cairo, Egypt;(2) The Hot laboratory, A. E. E., Cairo, Egypt |
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Abstract: | Thorium(IV) and uranium(VI) chelate complexes with PAN, PAR, TAN and TAR have been studied in absolute ethanol. The uranyl
ion forms complexes with PAN, PAR, TAN and TAR in the metal to ligand molar ratio of 1:1. Thorium(IV) forms complexes with
PAR, TAR and TAN in the molar ratio of 1:2. In case of Th(IV)-PAN complexes the molar ratio is 1:2.4. The stability constants
for all the above complexes have been worked out using the mole ratio method. The kinetics of aquation of Th(IV)-PAN complexes
indicate that PAN acts as a tridentate ligand. |
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Keywords: | |
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