Materials Data on Tm(FeB)2 by Materials Project
Tm(FeB)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tm is bonded in a 8-coordinate geometry to eight equivalent Fe and eight equivalent B atoms. All Tm–Fe bond lengths are 2.92 Å. All Tm–B bond lengths are 2.72 Å. Fe is bonded to four equivalent Tm and four equivalent B atoms to form a mixture of edge, face, and corner-sharing FeTm4B4 tetrahedra. All Fe–B bond lengths are 2.11 Å. B is bonded in a 9-coordinate geometry to four equivalent Tm, four equivalent Fe, and one B atom. The B–B bond length is 2.33 Å.