Materials Data on ErFeGe2 by Materials Project
ErFeGe2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Er is bonded in a 10-coordinate geometry to four equivalent Fe and ten Ge atoms. All Er–Fe bond lengths are 3.18 Å. There are a spread of Er–Ge bond distances ranging from 3.11–3.29 Å. Fe is bonded in a 5-coordinate geometry to four equivalent Er and five Ge atoms. There are a spread of Fe–Ge bond distances ranging from 2.26–2.38 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six equivalent Er, one Fe, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.57 Å. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Er and four equivalent Fe atoms.
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