Materials Data on Eu2SO6 by Materials Project

Abstract

Eu2O2SO4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Eu3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.32–2.79 Å. S6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.48 Å) and two longer (1.50 Å) S–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Eu3+ atoms to form a mixture of distorted corner and edge-sharing OEu4 tetrahedra. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Eu3+ and one S6+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to two equivalent Eu3+ and one S6+ atom.