Materials Data on Eu2WO6 by Materials Project

Abstract

Eu2WO6 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Eu3+ sites. In the first Eu3+ site, Eu3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.36–2.53 Å. In the second Eu3+ site, Eu3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.33–2.79 Å. In the third Eu3+ site, Eu3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.30–2.72 Å. W6+ is bonded in a distorted trigonal bipyramidal geometry to five O2- atoms. There are a spread of W–O bond distances ranging from 1.83–2.13 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Eu3+ and one W6+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Eu3+ and one W6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Eu3+ and one W6+ atom. In the fourth O2- site, O2- is bonded to four Eu3+ atoms to form OEu4 tetrahedra that share corners with six OEu4 tetrahedra and edges with four OEu3W tetrahedra. In the fifth O2- site, O2- is bonded to three Eu3+ and one W6+ atom to form a mixture of edge and corner-sharing OEu3W tetrahedra. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Eu3+ and one W6+ atom.