Acta Cryst. (2002). E58, i93-i94  [ doi:10.1107/S1600536802016963 ]

Decaammonium dodecatungstate nonahydrate, (NH₄)₁₀[H₂W₁₂O₄₂]·9H₂O: anionic `isomorphism'

G. J. Gainsford, S. V. Chong, B. Ingham and J. L. Tallon

Abstract: The title salt crystallizes in an almost identical cell to that of (NH₄)₆[H₆W₁₂O₄₂]·10H₂O [Averbuch-Pouchot, Tordjman, Durif & Guitel (1979). Acta Cryst. B35, 1675-1677]. While the centrosymmetric anion coordinates are isomorphous, refinement confirms the different ammonium cation and water content, even though the H atoms cannot be unambiguously determined.

Online 27 September 2002

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