Materials Data on Cs3H(SeO4)2 by Materials Project

Abstract

Cs3H(SeO4)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Cs–O bond distances ranging from 3.24–3.55 Å. In the second Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to six O2- atoms. There are two shorter (3.14 Å) and four longer (3.23 Å) Cs–O bond lengths. H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.23 Å. Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.66–1.74 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 water-like geometry to one Cs1+, one H1+, and one Se6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one Se6+ atom.