Acta Cryst. (2008). E64, i32  [ doi:10.1107/S1600536808012865 ]

Tetrapotassium diantimony(III) tin(IV) tetradecafluoride

A. V. Gerasimenko, E. B. Merkulov and T. I. Usol'tseva

Abstract: The title compound, K₄Sb₂SnF₁₄, is built from anionic layers, with an overall composition of [Sb₂SnF₁₄]^4- extending parallel to the ac plane, and K⁺ cations. The layers are made up from vertex-sharing centrosymmetric SnF₆ octahedra and Sb₂F₁₂ dimers. The Sn-F distances are in the range 1.9581 (14)-1.9611 (17) Å. The Sb polyhedra contain three short terminal Sb-F bonds [1.9380 (14)-2.0696 (15) Å], one short bridging bond [2.0609 (17) Å], one bridging bond of medium length [2.7516 (15) Å], and two longer bridging bonds [3.0471 (18) and 3.117 (2) Å]. The K⁺ ions are coordinated by F atoms with coordination numbers 10 and 8, and K-F bond lengths are in the range 2.6235 (16)-3.122 (2) Å.

Online 7 May 2008

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