Materials Data on ErMgSn by Materials Project
MgErSn crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Mg is bonded in a distorted square co-planar geometry to four equivalent Sn atoms. All Mg–Sn bond lengths are 3.08 Å. Er is bonded to five equivalent Sn atoms to form a mixture of distorted corner and edge-sharing ErSn5 square pyramids. There are one shorter (3.10 Å) and four longer (3.13 Å) Er–Sn bond lengths. Sn is bonded in a 9-coordinate geometry to four equivalent Mg and five equivalent Er atoms.
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