Acta Cryst. (2005). E61, i52-i54  [ doi:10.1107/S1600536805007245 ]

Reinvestigation of NH₄[Co(H₂O)₆]PO₄ based on single-crystal data

B. El Bali, R. Essehli, F. Capitelli and M. Lachkar

Abstract: The structure of the title compound, ammonium hexaaquacobalt(II) orthophosphate, known from powder data, has been refined based on single-crystal data. The compound crystallizes in the struvite [NH₄Mg(H₂O)₆PO₄] structure type and is isotypic with the homologous nickel phase. The framework is built of NH₄⁺, [Co(H₂O)₆]²⁺ and PO₄^3- ions stacked in two kinds of ribbons parallel to (010). Co^II atoms are well separated in the framework, with the shortest CoCo distance being over 6  Å.

Online 25 March 2005

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