Materials Data on YCu5 by Materials Project
Cu5Y crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Y is bonded in a 6-coordinate geometry to eighteen Cu atoms. There are six shorter (2.91 Å) and twelve longer (3.24 Å) Y–Cu bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Y and six equivalent Cu atoms. All Cu–Cu bond lengths are 2.50 Å. In the second Cu site, Cu is bonded to four equivalent Y and eight Cu atoms to form a mixture of face, edge, and corner-sharing CuY4Cu8 cuboctahedra. All Cu–Cu bond lengths are 2.52 Å.
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