Materials Data on TbCu5 by Materials Project
TbCu5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Tb is bonded in a distorted hexagonal planar geometry to eighteen Cu atoms. There are six shorter (2.89 Å) and twelve longer (3.24 Å) Tb–Cu bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded to four equivalent Tb and eight Cu atoms to form a mixture of edge, corner, and face-sharing CuTb4Cu8 cuboctahedra. There are four shorter (2.50 Å) and four longer (2.52 Å) Cu–Cu bond lengths. In the second Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Tb and nine Cu atoms. All Cu–Cu bond lengths are 2.89 Å.
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