Materials Data on EuTiAgO4 by Materials Project
AgEuTiO4 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. Eu3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Eu–O bond distances ranging from 2.29–2.81 Å. Ti4+ is bonded in a 5-coordinate geometry to five O2- atoms. There is one shorter (1.80 Å) and four longer (1.93 Å) Ti–O bond length. Ag1+ is bonded to five equivalent O2- atoms to form a mixture of distorted edge and corner-sharing AgO5 square pyramids. There are a spread of Ag–O bond distances ranging from 2.37–2.74 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Eu3+ and two equivalent Ti4+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Eu3+ and two equivalent Ti4+ atoms. In the third O2- site, O2- is bonded in a 5-coordinate geometry to five equivalent Eu3+ atoms. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Ti4+ and five equivalent Ag1+ atoms.