Figure 1 Projection along [010] of a fraction of the crystal structure of Nd2W2O9, showing one sheet of [NdO9] polyhedra that lies parallel to the a-c plane, and one layer of isolated chains of alternately edge- and corner-sharing [WO6] octahedra. Large purple and violet spheres denote Nd1 and Nd2 atoms, respectively, smaller orange spheres denote W atoms. Oxygen atoms are indicated by the corners of the coordination polyhedra and are not drawn.  [article HTML]