Acta Cryst. (2004). E60, i1-i2  [ doi:10.1107/S1600536803027375 ]

Na₄Ni₅[(As_1-xP_x)O₄]₂[(As_2yP_2-2y)O₇]₂ (x = 0.27 and y = 0.295)

R. Ben Smail and T. Jouini

Abstract: Crystals of the title compound, tetrasodium pentanickel arsenic-phosphorus (2.64/3.36) docosaoxide, has been grown by a solid-state reaction and characterized by single-crystal X-ray diffraction. The structure is built up from corner- and edge-sharing (AsP)O₄ tetrahedra, (AsP)₂O₇ groups, NiO₆ octahedra and Ni₂O₉ units, giving rise to a polyhedral connectivity having tunnels running along the [001] direction. It is isostructural with Na₄Ni₅(PO₄)₂(P₂O₇)₂.

Online 12 December 2003

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