Materials Data on Cs2SeO4 by Materials Project
Cs2SeO4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 1-coordinate geometry to ten O2- atoms. There are a spread of Cs–O bond distances ranging from 3.10–3.62 Å. In the second Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Cs–O bond distances ranging from 3.11–3.58 Å. Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.67–1.69 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one Se6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to five Cs1+ and one Se6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to five Cs1+ and one Se6+ atom.