Figure 7
Projection of the structure of β-K3NdSi6O15 along c from z = ¼ to ¾, showing the coordination geometry about K(4) and K(5) at z = ½. The z-coordinate of the nearest neighbors of oxygen in the z < ½ portion of the unit cell is indicated. Coordinates of atoms in the z > ½ portion of the cell are given by z′ = ½ − z. |