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KMID : 1059519950390070538
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Journal of the Korean Chemical Society
1995 Volume.39 No. 7 p.538 ~ p.542
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A Study on Complexation of Dioxouranium(Ⅵ) Ion with Hydrazide Schiff Base Ligands
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Cha Bun-Hee
Hur Young-Ae
Choi Kyu-Seong
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Abstract
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The stability constant and the thermodynamic parameters of the hydrazide Schiff base ligands such as N,N'-oxalylbis(salicylaldehydehydrazone)(OBSH), N,N'-malonylbis(salicylaldehydehydrazone)(MBSH), and N,N'-succinylbis(salicylaldehydehydrazone)(SBSH) with dioxouranium(Ⅵ) ion have been determined by potentiometry in 95% DMF solution at various temperatures. The order of stability constants increased SBSH < MBSH < OBSH, and the complexation of dioxouranium(Ⅵ) ion with OBSH ligand was exothermic, but with MBSH, SBSH ligand were endothermic reactions. And the order of ΔS increased OBSH < MBSH < SBSH.
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KEYWORD
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