Materials Data on SmUAl4 by Materials Project
USmAl4 is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to four equivalent Sm and twelve equivalent Al atoms. All U–Sm bond lengths are 3.41 Å. All U–Al bond lengths are 3.26 Å. Sm is bonded in a 12-coordinate geometry to four equivalent U and twelve equivalent Al atoms. All Sm–Al bond lengths are 3.26 Å. Al is bonded to three equivalent U, three equivalent Sm, and six equivalent Al atoms to form a mixture of face, edge, and corner-sharing AlSm3U3Al6 cuboctahedra. There are three shorter (2.77 Å) and three longer (2.80 Å) Al–Al bond lengths.
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