 | Acta Crystallographica Section B Acta Crystallographica Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS |
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![[Figure 2]](eb5055fig2mag.jpg)
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Figure 2
(a) The partial structure of Ge atoms in (NH4)2Ge[6][Ge[4]6O15] projected on the ac plane. The skeleton of Ge[4] atoms, with stoichiometry [Ge2O5]2−, is represented by cyan spheres connected by yellow lines. The Ge[6] atoms, as dark blue spheres, are connected to the Ge[4] network by red lines. (b) The Ge-subarray of the tetrahedral [Ge2O5]2− network showing the threefold connectivity of the Ge atoms converted into Ψ-As atoms, according to the Zintl–Klemm concept. The lilac spheres here represent the N atoms located in the tunnels formed by such networks. (c) Perspective view of one of the networks showing the tunnel where the Ge[6] and NH4+ cations reside. (d) The same network as in (c) in which the GeO4 tetrahedra have been drawn in. |
![[Figure 2]](eb5055fig2.jpg)
| STRUCTURAL SCIENCE CRYSTAL ENGINEERING MATERIALS |
ISSN: 2052-5206
