Materials Data on EuCu(WO4)2 by Materials Project
EuCu(WO4)2 crystallizes in the triclinic P-1 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 2.41–2.75 Å. There are two inequivalent W6+ sites. In the first W6+ site, W6+ is bonded in a distorted octahedral geometry to six O2- atoms. There are a spread of W–O bond distances ranging from 1.82–2.17 Å. In the second W6+ site, W6+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of W–O bond distances ranging from 1.78–2.36 Å. Cu1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Cu–O bond distances ranging from 1.88–1.99 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Eu3+, one W6+, and one Cu1+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Eu3+ and one W6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Eu3+ and two W6+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Eu3+ and one W6+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Eu3+ and one W6+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to three W6+ and one Cu1+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Eu3+, one W6+, and one Cu1+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Eu3+ and two W6+ atoms.