Materials Data on KEuPO4 by Materials Project
KEuPO4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.67–3.14 Å. Eu2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Eu–O bond distances ranging from 2.59–3.06 Å. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+, two equivalent Eu2+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, three equivalent Eu2+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+, two equivalent Eu2+, and one P5+ atom.