Figure 1
The structure of Rb2M5Pn4 (M = Zn or Cd; Pn = As or Sb), viewed (a) down the b direction and (b) down the a direction. (c) Combined ball-and-stick and polyhedral representations of [M4Pn4] units capped by M3 atoms. The large circles (blue in the electronic version of the paper) are Rb atoms, the medium circles (green) are M atoms and the small circles (pink) are Pn atoms. Structural fragments translated by 1/2a + 1/2b are shown in grey. The unit cell is outlined by dashed lines (red). Wireframe polyhedra are M1Pn4 tetrahedra, and dark (orange) and light (cyan) polyhedra are M2Pn4 and M3Pn4 tetrahedra, respectively. |