Figure 5
Star-shaped (exhibiting fivefold symmetry) cluster B (diameter 24 Å) along the periodic direction after refinement. (a) x5 = 0, (b) or , (c) and (d) projection of all layers. This cluster is better ordered than cluster A with one Mg split position on the x5 = 0 layer. The blue lines indicate CN 16 polyhedra and gold lines and dashed lines indicate two different CN 12 polyhedra types, one ideal (at the center) and five distorted (surrounding the ideal one). Dy: blue; Zn: red; Mg: green. |