Materials Data on ErSi2Ni by Materials Project
ErNiSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Er is bonded in a 12-coordinate geometry to four equivalent Ni and ten Si atoms. All Er–Ni bond lengths are 3.02 Å. There are a spread of Er–Si bond distances ranging from 2.99–3.11 Å. Ni is bonded in a 9-coordinate geometry to four equivalent Er and five Si atoms. There are one shorter (2.25 Å) and four longer (2.32 Å) Ni–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 12-coordinate geometry to four equivalent Er, four equivalent Ni, and four equivalent Si atoms. All Si–Si bond lengths are 2.79 Å. In the second Si site, Si is bonded in a 9-coordinate geometry to six equivalent Er, one Ni, and two equivalent Si atoms. Both Si–Si bond lengths are 2.37 Å.