Materials Data on Eu(FeSi)2 by Materials Project
EuFe2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Eu2+ is bonded in a distorted body-centered cubic geometry to eight equivalent Si4- atoms. All Eu–Si bond lengths are 3.16 Å. Fe3+ is bonded to four equivalent Si4- atoms to form a mixture of edge and corner-sharing FeSi4 tetrahedra. All Fe–Si bond lengths are 2.27 Å. Si4- is bonded in a 9-coordinate geometry to four equivalent Eu2+, four equivalent Fe3+, and one Si4- atom. The Si–Si bond length is 2.79 Å.
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