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Figure 1 The crystal structure of NaSr(PO4)(H2O)9 in a projection approximately along [001]. Sr atoms are represented as blue spheres and O atoms as white spheres; NaO6 octahedra are given in yellow and AsO4 tetrahedra in red. For clarity, Sr—O bonds are omitted and only one orientation of the disordered AsO4 group is given. Ellipsoids are drawn at the 90% probability level. |