Materials Data on Al3Fe2Si by Materials Project
Fe2Al3Si crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Fe is bonded in a 9-coordinate geometry to six equivalent Al and three equivalent Si atoms. There are three shorter (2.47 Å) and three longer (2.64 Å) Fe–Al bond lengths. All Fe–Si bond lengths are 2.37 Å. Al is bonded in a 2-coordinate geometry to four equivalent Fe and two equivalent Si atoms. Both Al–Si bond lengths are 2.67 Å. Si is bonded to six equivalent Fe and six equivalent Al atoms to form face-sharing SiAl6Fe6 cuboctahedra.
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