Materials Data on EuZrSe3 by Materials Project
EuZrSe3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Eu2+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Eu–Se bond distances ranging from 3.16–3.40 Å. Zr4+ is bonded to six Se2- atoms to form edge-sharing ZrSe6 octahedra. There are a spread of Zr–Se bond distances ranging from 2.62–2.75 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to one Eu2+ and three equivalent Zr4+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to three equivalent Eu2+ and two equivalent Zr4+ atoms. In the third Se2- site, Se2- is bonded to four equivalent Eu2+ and one Zr4+ atom to form a mixture of distorted corner and edge-sharing SeEu4Zr square pyramids.