Materials Data on Eu2MoO6 by Materials Project
Eu2O3.MoO3 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 8-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.32–2.57 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 2.33–2.81 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 2.29–2.75 Å. Mo6+ is bonded in a distorted trigonal bipyramidal geometry to five O2- atoms. There are a spread of Mo–O bond distances ranging from 1.80–2.25 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Eu3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Eu3+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Eu3+ and one Mo6+ 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 OEu3Mo tetrahedra. In the fifth O2- site, O2- is bonded to three Eu3+ and one Mo6+ atom to form a mixture of distorted edge and corner-sharing OEu3Mo tetrahedra. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Eu3+ and one Mo6+ atom.