Materials Data on SmCu4Ag by Materials Project
SmAgCu4 crystallizes in the cubic F-43m space group. The structure is three-dimensional. Sm is bonded in a 12-coordinate geometry to four equivalent Ag and twelve equivalent Cu atoms. All Sm–Ag bond lengths are 3.12 Å. All Sm–Cu bond lengths are 2.99 Å. Ag is bonded in a 4-coordinate geometry to four equivalent Sm and twelve equivalent Cu atoms. All Ag–Cu bond lengths are 2.99 Å. Cu is bonded to three equivalent Sm, three equivalent Ag, and six equivalent Cu atoms to form a mixture of corner, edge, and face-sharing CuSm3Cu6Ag3 cuboctahedra. There are three shorter (2.53 Å) and three longer (2.57 Å) Cu–Cu bond lengths.
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