Materials Data on NaErCu2F8 by Materials Project
NaErCu2F8 crystallizes in the tetragonal I422 space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight equivalent F1- atoms. All Na–F bond lengths are 2.43 Å. Er3+ is bonded in a 8-coordinate geometry to eight equivalent F1- atoms. All Er–F bond lengths are 2.27 Å. Cu2+ is bonded in a square co-planar geometry to four equivalent F1- atoms. All Cu–F bond lengths are 1.92 Å. F1- is bonded in a distorted trigonal planar geometry to one Na1+, one Er3+, and one Cu2+ atom.
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