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Uranium(IV) polyoxotungstophosphates

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Abstract

Two tris(oxouranium)-substituted Keggin and Dawson sandwich-type tungstophosphate heteropolyanions Na12[(UO)3(H2O)6(PW9O34)2]·21 H2O (1) and Na18[(UO)3(H2O)6(P2W15O56)2]·27 H2O (2) have been prepared by reaction of uranium sulphate with [PW9O34]9− and [P2W15O56]12−, respectively, in aqueous media at 4.7 pH. The products were characterized by elemental and thermal analyses, IR, UV-Vis spectroscopy and magnetical susceptibility. The results of these studies suggest that the compounds obtained from Keggin and Dawson trilacunary anions are 2∶3 sandwich-type complexes and both exhibit a square antiprismatic stereochemistry for uranium(IV) with retention of polyoxometallate parent structure.

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Authors and Affiliations

  1. Chemistry Department, “Babeş-Bolyai” University, RO-3400, Cluj-Napoca, Romania

    M. Rusu, Gh. Marcu & C. Roşu

  2. Pharmacy Department, “Iuliu Haţieganu” University, RO-3400, Cluj-Napoca, Romania

    D. Rusu

  3. Inorganic Chemistry Department, Institut of Chemistry “Raluca Ripan”, RO-3400, Cluj-Napoca, Romania

    A.-R. Tomsa

Authors
  1. M. Rusu
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  2. Gh. Marcu
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  3. D. Rusu
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  4. C. Roşu
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  5. A.-R. Tomsa
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Rusu, M., Marcu, G., Rusu, D. et al. Uranium(IV) polyoxotungstophosphates. J Radioanal Nucl Chem 242, 467–472 (1999). https://doi.org/10.1007/BF02345579

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  • DOI: https://doi.org/10.1007/BF02345579

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