Polytypism and oxo-tungstate polyhedra polymerization in novel complex uranyl tungstates

Dalton Trans. 2012 Jul 28;41(28):8512-4. doi: 10.1039/c2dt31000g. Epub 2012 Jun 18.


Three new uranyl tungstates, α-, β-Cs(2)[(UO(2))(2)(W(2)O(9))], and Rb(6)[(UO(2))(7)(WO(5))(2)(W(3)O(13))O(2)], have been obtained by high temperature solid state reactions. All three compounds display novel structure topologies: α- and β-Cs(2)[(UO(2))(2)(W(2)O(9))] are based upon layers with a new topology that can be related to the uranophane topology; Rb(6)[(UO(2))(7)(WO(5))(2)(W(3)O(13))O(2)] is a rare example of a non-molecular inorganic phase with layers containing oxo-tungstate trimers. The structural relationship between α- and β-Cs(2)[(UO(2))(2)(W(2)O(9))] can be assigned to polytypism.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Molecular Structure
  • Polymerization
  • Tungsten Compounds / chemical synthesis*
  • Tungsten Compounds / chemistry
  • Uranium Compounds / chemical synthesis*
  • Uranium Compounds / chemistry


  • Tungsten Compounds
  • Uranium Compounds