Materials Data on NaEr(ReO5)4 by Materials Project
NaEr(ReO5)4 crystallizes in the tetragonal P-4n2 space group. The structure is three-dimensional. Na is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.56 Å) and four longer (2.65 Å) Na–O bond lengths. Er is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.27 Å) and four longer (2.38 Å) Er–O bond lengths. Re is bonded in a tetrahedral geometry to four O atoms. There is three shorter (1.74 Å) and one longer (1.81 Å) Re–O bond length. There are five inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Re atom. In the second O site, O is bonded in a distorted single-bond geometry to one Na and one Re atom. In the third O site, O is bonded in a single-bond geometry to one Er atom. In the fourth O site, O is bonded in a distorted bent 150 degrees geometry to one Na and one Re atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to one Er and one Re atom.