Materials Data on TmCu4Ag by Materials Project
TmAgCu4 crystallizes in the cubic F-43m space group. The structure is three-dimensional. Tm is bonded in a 12-coordinate geometry to four equivalent Ag and twelve equivalent Cu atoms. All Tm–Ag bond lengths are 3.07 Å. All Tm–Cu bond lengths are 2.94 Å. Ag is bonded in a 4-coordinate geometry to four equivalent Tm and twelve equivalent Cu atoms. All Ag–Cu bond lengths are 2.94 Å. Cu is bonded to three equivalent Tm, three equivalent Ag, and six equivalent Cu atoms to form a mixture of edge, face, and corner-sharing CuTm3Cu6Ag3 cuboctahedra. There are three shorter (2.49 Å) and three longer (2.52 Å) Cu–Cu bond lengths.
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