Summary
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1.
A spectrophotometric and pH study of the reaction of uranyl oxalate complexes with H2O2 led to the establishment of the formation of new complex anions (UO2O4(OO)2− and (UO2(OO) (C2O4) 6−4 and to the calculation of the equilibrium constants of the reactions in which these are formed.
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2.
Solid phases of composition (NH4)2(UO2)2(OO)(C2O4)2·XH2O and (HOOUO2C2O4NH4·XH2O were isolated. We did not succeed in isolating a solid phase of composition R6(UO2)2(OO)(C2O4)4] because of its high solubility.
Literature cited
A. A. Grinberg, B. V. Ptitsyn, and N. E. Tekster, Trans. Radium Inst. Acad. Sci. USSR 7, 74 (1956).
L. J. Heidt, J. Phys. Chem. 46, 624 (1942).
A. M. Gurevich, L. D. Preobrazhenskaya, and E. V. Komarov, J. Inorg. Chem. 2, 2307 (1957).
J. J. Katz and E. Rabinowitch, The Chemistry of Uranium (Russian translation), (Foreign Lit. Press, Moscow, 1954).
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Komarov, E.V., Gurevich, A.M. Reaction of uranyl oxalate complexes with hydrogen peroxide. Russ Chem Bull 8, 520–522 (1959). https://doi.org/10.1007/BF00917712
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DOI: https://doi.org/10.1007/BF00917712