Redetermination of the cubic struvite analogue Cs[Mg(OH2)6](AsO4)

Redetermination of the cubic struvite analogue Cs[Mg(OH2)6](AsO4)

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In contrast to the previous refinement from photographic data [Ferrari et al.(1955).Gazz.

Chim.Ital.84, 169–174], the present redetermination of the title compound, caesium hexaaquamagnesium arsenate(V), revealed the Cs atom to be on bostik universal primer pro Wyckoff position 4d instead of Wyckoff position 4b of space group Foverline{4}3m.

The structure can be derived from the halite structure.The centres of the complex [Mg(OH2)6] octahedra and the AsO4 tetrahedra (both with overline{4}3m symmetry) are on the respective Na and Cl elliot pecan tree for sale positions.The building units are connected to each other by O—H.

O hydrogen bonds.The Cs+ cations (overline{4}3m symmetry) are located in the voids of this arrangement and exhibit a regular cuboctahedral 12-coordination to the O atoms of the water molecules.The O atom bonded to As has 2mm site symmetry (Wyckoff position 24f) and the water-molecule O atom has m site symmetry (Wyckoff position 48h).