Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)


inorganic compounds



Acta Cryst. (2013). E69, i37    [ doi:10.1107/S1600536813013664 ]

K(MoO2)4O3(AsO4)

R. Jouini, M. F. Zid and A. Driss

Abstract: A new compound with a non-centrosymmetric structure, potassium tetrakis[dioxomolybdenum(IV)] arsenate trioxide, K(MoO2)4O3(AsO4), has been synthesized by a solid-state reaction. The [(MoO2)4O3(AsO4)]+ three-dimensional framework consists of single arsenate AsO4 tetrahedra, MoO6 octahedra, MoO5 bipyramids and bioctahedral units of edge-sharing Mo2O10 octahedra. The [Mo2O8][infinity] octahedral chains running along the a-axis direction are connected through their corners to the AsO4 tetrahedra, MoO6 octahedra and MoO5 bipyramids, so as to form large tunnels propagating along the a axis in which the K+ cations are located. This structure is compared with compounds containing M2O10 (M = Mo, V, Fe) dimers and with those containing M2O8 (M = V) chains.


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