Materials Data on Er4Ge6Rh7 by Materials Project

Abstract

Er4Rh7Ge6 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. Er is bonded to six equivalent Rh and six equivalent Ge atoms to form ErGe6Rh6 cuboctahedra that share corners with twelve equivalent ErGe6Rh6 cuboctahedra, faces with six equivalent ErGe6Rh6 cuboctahedra, and faces with two equivalent RhGe6 octahedra. All Er–Rh bond lengths are 2.96 Å. All Er–Ge bond lengths are 3.02 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded to six equivalent Ge atoms to form RhGe6 octahedra that share faces with eight equivalent ErGe6Rh6 cuboctahedra. All Rh–Ge bond lengths are 2.67 Å. In the second Rh site, Rh is bonded in a 12-coordinate geometry to four equivalent Er and four equivalent Ge atoms. All Rh–Ge bond lengths are 2.59 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Er and five Rh atoms.