Materials Data on TmFeGe2 by Materials Project
TmFeGe2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tm is bonded in a 6-coordinate geometry to four equivalent Fe and ten Ge atoms. All Tm–Fe bond lengths are 3.13 Å. There are a spread of Tm–Ge bond distances ranging from 3.08–3.28 Å. Fe is bonded in a 5-coordinate geometry to four equivalent Tm and five Ge atoms. There are one shorter (2.25 Å) and four longer (2.38 Å) Fe–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six equivalent Tm, one Fe, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.56 Å. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Tm and four equivalent Fe atoms.
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