Materials Data on ErMnSi2 by Materials Project
ErMnSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Er is bonded in a 10-coordinate geometry to ten Si atoms. There are a spread of Er–Si bond distances ranging from 3.08–3.16 Å. Mn is bonded in a 5-coordinate geometry to five Si atoms. There are a spread of Mn–Si bond distances ranging from 2.27–2.31 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a distorted single-bond geometry to six equivalent Er, one Mn, and two equivalent Si atoms. Both Si–Si bond lengths are 2.49 Å. In the second Si site, Si is bonded in a 4-coordinate geometry to four equivalent Er and four equivalent Mn atoms.
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