Materials Data on ErPt5 by Materials Project
ErPt5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Er3+ is bonded in a distorted hexagonal planar geometry to eighteen Pt+0.60- atoms. There are six shorter (3.08 Å) and twelve longer (3.48 Å) Er–Pt bond lengths. There are two inequivalent Pt+0.60- sites. In the first Pt+0.60- site, Pt+0.60- is bonded to four equivalent Er3+ and eight Pt+0.60- atoms to form a mixture of face, edge, and corner-sharing PtEr4Pt8 cuboctahedra. There are four shorter (2.67 Å) and four longer (2.72 Å) Pt–Pt bond lengths. In the second Pt+0.60- site, Pt+0.60- is bonded in a 12-coordinate geometry to three equivalent Er3+ and nine Pt+0.60- atoms. All Pt–Pt bond lengths are 3.08 Å.
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