Materials Data on CeFeSi2 by Materials Project
CeFeSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ce is bonded in a 4-coordinate geometry to four equivalent Fe and ten Si atoms. There are two shorter (3.06 Å) and two longer (3.09 Å) Ce–Fe bond lengths. There are a spread of Ce–Si bond distances ranging from 3.11–3.16 Å. Fe is bonded in a 4-coordinate geometry to four equivalent Ce and four equivalent Si atoms. There are two shorter (2.28 Å) and two longer (2.30 Å) Fe–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six equivalent Ce and three Si atoms. There are two shorter (2.34 Å) and one longer (2.46 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 9-coordinate geometry to four equivalent Ce, four equivalent Fe, and one Si atom.