Materials Data on Eu2CoO4 by Materials Project
Eu2CoO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Eu3+ sites. In the first Eu3+ site, Eu3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.42–2.86 Å. In the second Eu3+ site, Eu3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Eu–O bond distances ranging from 2.33–2.96 Å. Co2+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Co–O bond distances ranging from 1.82–1.89 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to four Eu3+ and one Co2+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to four Eu3+ and one Co2+ atom. In the third O2- site, O2- is bonded in a 5-coordinate geometry to four Eu3+ and one Co2+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Eu3+ and one Co2+ atom.