Materials Data on ErRh5 by Materials Project
ErRh5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Er is bonded in a distorted hexagonal planar geometry to eighteen Rh atoms. There are six shorter (3.02 Å) and twelve longer (3.40 Å) Er–Rh bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded to four equivalent Er and eight Rh atoms to form a mixture of edge, face, and corner-sharing RhEr4Rh8 cuboctahedra. There are four shorter (2.61 Å) and four longer (2.64 Å) Rh–Rh bond lengths. In the second Rh site, Rh is bonded in a 12-coordinate geometry to three equivalent Er and nine Rh atoms. All Rh–Rh bond lengths are 3.02 Å.
36 MATERIALS SCIENCE↗