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Chemistry of the CARBEX process: Identification of absorption bands of the ligands in the electronic spectra of aqueous solutions of Na4[UO2(O2)CO3)2]

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Abstract

On the basis of consideration of dissociation, hydration, association, and ligand exchange, the assignment of absorption bands in the electronic spectra of aqueous solutions of the Na4[UO2(O2)CO3)2] complex has been performed. It has been demonstrated that the absorption in the range 190–400 nm is caused by the oxygen atoms of the O 2-2 and CO 2-3 groups and hydration water molecules of dissociated and neutral complex species Na3[UO2(O2)(CO3)2]–, Na2[UO2(O2)(CO3)2]2–, and Na4[UO2(O2)(CO3)2].

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, Moscow, 125047, Russia

    A. V. Boyarintsev, S. I. Stepanov, A. A. Chekhlov & A. M. Chekmarev

  2. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119071, Russia

    A. Yu. Tsivadze

Authors
  1. A. V. Boyarintsev
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  2. S. I. Stepanov
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  3. A. A. Chekhlov
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  4. A. M. Chekmarev
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  5. A. Yu. Tsivadze
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Corresponding author

Correspondence to S. I. Stepanov.

Additional information

Original Russian Text © A.V. Boyarintsev, S.I. Stepanov, A.A. Chekhlov, A.M. Chekmarev, A.Yu. Tsivadze, 2016, published in Doklady Akademii Nauk, 2016, Vol. 469, No. 5, pp. 571–576.

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Boyarintsev, A.V., Stepanov, S.I., Chekhlov, A.A. et al. Chemistry of the CARBEX process: Identification of absorption bands of the ligands in the electronic spectra of aqueous solutions of Na4[UO2(O2)CO3)2]. Dokl Chem 469, 227–232 (2016). https://doi.org/10.1134/S0012500816080024

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  • DOI: https://doi.org/10.1134/S0012500816080024

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