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Figure 2 Structure motifs in Li13Si4: (a) perspective view along the crystallographic c-axis of the unit cell of Li13Si4 (atoms of the asymmetric unit are labeled), (b) isolated Si atoms, and (c) Si—Si dumbbells located in different ab-planes (c = 0, 1 and c = 1/2, respectively). Ellipsoids are drawn at a 80% probability level (Li = red, Si = blue; only the major component of Li6 is shown). |