%0 Journal Article
%T Na2MoO2As2O7
%A Raja Jouini
%A Mohamed Faouzi Zid
%A Ahmed Driss
%J Acta Crystallographica Section E
%D 2012
%I International Union of Crystallography
%R 10.1107/s1600536812048167
%X Disodium molybdenum dioxide diarsenate, Na2MoO2As2O7, has been synthesized by a solid-state reaction. The structure is built up from MoAs2O12 linear units sharing corners to form a three-dimensional framework containing tunnels running along the a-axis direction in which the Na+ cations are located. In this framework, the AsV atoms are tetrahedrally coordinated and form an As2O7 group. The MoVI atom is displaced from the center of an octahedron of O atoms. Two Na+ cations are disordered about inversion centres. Structural relationships between different compounds: A2MoO2As2O7 (A = K, Rb), AMOP2O7 (A = Na, K, Rb; M = Mo, Nb) and MoP2O7 are discussed.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536812048167