Electronic Resource
New York, NY
:
Wiley-Blackwell
Journal für Praktische Chemie/Chemiker-Zeitung
38 (1968), S. 280-288
ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Interaction of uranyl ions with catechol has been investigated by the potentiometric and spectrophotometric techniques. Potentiometric titrations of uranyl nitrate with caustic potash in presence of catechol exhibited a sharp inflexion at 2⅔ moles of alkali der mole of the metal ion. At the initial stages of the titration, the reaction was shown to proceed as: \documentclass{article}\pagestyle{empty}\begin{document}$$ \rm{UO}_2^{2 + } + \rm{C}_6 \rm{H}_4 \left({\rm{OH}} \right)_2 \rightleftharpoons \rm{UO}_2 \rm{C}_6 \rm{H}_4 \rm{O}_2 + 2\rm{H}^ + . $$\end{document} The equilibrium constant of the reaction was found to be 2.88 · 10-7 giving a value of 3.87·1014 for the formation constant of the chelate. Equilibrium constant of the reaction: \documentclass{article}\pagestyle{empty}\begin{document}$$ \rm{2UO}_2^{2 + } + 2\rm{H}_2 \rm{A} \rightleftharpoons \left({\rm{UO}_2 \rm{A}_2 } \right)_{\rm2} + 4\rm{H}^ + . $$\end{document} has been found to be 1.00·10-10. The binuclear chelate species have been found to polymerize further through hydrolytic reactions.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19680380507
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