Materials Data on Yb(FeSi)2 by Materials Project
Yb(FeSi)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Yb2+ is bonded in a distorted body-centered cubic geometry to eight equivalent Si4- atoms. All Yb–Si bond lengths are 3.10 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 Yb2+, four equivalent Fe3+, and one Si4- atom. The Si–Si bond length is 2.59 Å.