Materials Data on Be4AlCr by Materials Project
Be4CrAl is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Be is bonded to six equivalent Be, three equivalent Cr, and three equivalent Al atoms to form a mixture of edge, face, and corner-sharing BeBe6Al3Cr3 cuboctahedra. There are three shorter (2.15 Å) and three longer (2.21 Å) Be–Be bond lengths. All Be–Cr bond lengths are 2.56 Å. All Be–Al bond lengths are 2.56 Å. Cr is bonded in a 12-coordinate geometry to twelve equivalent Be and four equivalent Al atoms. All Cr–Al bond lengths are 2.67 Å. Al is bonded in a 12-coordinate geometry to twelve equivalent Be and four equivalent Cr atoms.
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