Materials Data on RbEu(WO4)2 by Materials Project
RbEuW2O8 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded in a 12-coordinate geometry to ten O2- atoms. There are a spread of Rb–O bond distances ranging from 2.95–3.14 Å. Eu3+ is bonded in a 6-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.37–2.85 Å. W6+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 42°. There are a spread of W–O bond distances ranging from 1.83–2.18 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Rb1+ and two equivalent W6+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, two equivalent Eu3+, and one W6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+, one Eu3+, and two equivalent W6+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Eu3+, and one W6+ atom.