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Figure 1 The crystal structure of (Sr1.65Pb0.35)Al6O11 in a projection along [010]. AlO6 octahedra are yellow, AlO4 octahedra are red. Displacement ellipsoids are drawn at the 97% probability level. Bonds to the statistically occupied M2+ sites (M = Sr, Pb) were omitted for clarity. [Symmetry code: i) x + , y, z.] |