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Figure 1
(left) Crystal structures of Cr5B3. The purple and green displacement ellipsoids correspond to Cr and B atoms, respectively. Displacement ellipsoids are drawn at the 99% probability level. (right) Coordination polyhedra for each site, Cr11B5 16-vertex Frank–Kasper cluster around Cr1 on 16l site (z = 0.15), Cr8B6 rhombic dodeca­hedron around Cr2 on 4c site (z = 0), Cr10 bicapped square anti­prism around B1 on 4a site (z = 1/4), and Cr8B tricapped trigonal prism around B2 on 8h sites (z = 0).

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