Materials Data on ErSiRh2 by Materials Project

Abstract

ErRh2Si crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are three inequivalent Er sites. In the first Er site, Er is bonded in a 9-coordinate geometry to one Er and nine equivalent Rh atoms. The Er–Er bond length is 3.19 Å. There are three shorter (2.98 Å) and six longer (3.10 Å) Er–Rh bond lengths. In the second Er site, Er is bonded in a 9-coordinate geometry to one Er and nine equivalent Rh atoms. The Er–Er bond length is 3.19 Å. There are three shorter (2.98 Å) and six longer (3.10 Å) Er–Rh bond lengths. In the third Er site, Er is bonded in a 6-coordinate geometry to two Er, twelve equivalent Rh, and six Si atoms. All Er–Rh bond lengths are 3.31 Å. All Er–Si bond lengths are 3.21 Å. Rh is bonded in a 12-coordinate geometry to five Er, four equivalent Rh, and three Si atoms. There are two shorter (2.77 Å) and two longer (2.78 Å) Rh–Rh bond lengths. There are two shorter (2.41 Å) and one longer (2.53 Å) Rh–Si bond lengths. There are three inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to three equivalent Er and six equivalent Rh atoms. In the second Si site, Si is bonded in a 9-coordinate geometry to three equivalent Er and six equivalent Rh atoms. In the third Si site, Si is bonded in a distorted cuboctahedral geometry to six equivalent Rh atoms.