Materials Data on Eu2Se3 by Materials Project

Eu2Se3 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. there are two inequivalent Eu3+ sites. In the first Eu3+ site, Eu3+ is bonded to six Se2- atoms to form a mixture of corner and edge-sharing EuSe6 octahedra. The corner-sharing octahedral tilt angles are 7°. There are a spread of Eu–Se bond distances ranging from 2.92–2.97 Å. In the second Eu3+ site, Eu3+ is bonded to six Se2- atoms to form a mixture of corner and edge-sharing EuSe6 octahedra. The corner-sharing octahedra tilt angles range from 6–7°. There are a spread of Eu–Se bond distances ranging from 2.95–3.02 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to four Eu3+ atoms. In the second Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to four Eu3+ atoms.