Synthesis and structural assessment of ammonium and caesium difluorodioxoperoxouranates(VI), A2[UO2(O2)F2](A = NH4 or Cs), and alkali-metal difluorodioxoperoxouranate(VI) monohydrates,A2[UO2(O2)F2].H2O (A = K or Rb)

Bhattacharjee, Manabendra N. ; Chaudhuri, Mihir K. ; Purkayastha, Ranendra N. Dutta (1985) Synthesis and structural assessment of ammonium and caesium difluorodioxoperoxouranates(VI), A2[UO2(O2)F2](A = NH4 or Cs), and alkali-metal difluorodioxoperoxouranate(VI) monohydrates,A2[UO2(O2)F2].H2O (A = K or Rb) Journal of the Chemical Society, Dalton Transactions (2). pp. 409-411. ISSN 0300-9246

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Official URL: http://www.rsc.org/publishing/journals/DT/article....

Related URL: http://dx.doi.org/10.1039/DT9850000409

Abstract

The product obtained by treating an aqueous solution of UO2(NO3)2.6H2O with NH4OH or KOH reacts with AF (A = NH4, Rb, or Cs) or KF, 30% H2O2, and a very small amount of 40% HF, in the mol ratio UO2(NO3)2.6H2O:AF:H2O2 of 1:4:110.8, at pH 6.5-7 to afford ammonium and caesium difluorodioxoperoxouranates(VI), A2[UO2(O2) F2](A = NH4 or Cs), and potassium and rubidium difluorodioxoperoxouranate(VI) monohydrates, A2[UO2(O2)F2].H2O (A = K or Rb). The i.r. spectra suggest that the peroxo-ligand is bonded to the UO22+ centre in a triangular bidentate (C2v,) manner.

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