Materials Data on CdSeO4 by Materials Project

Abstract

CdSeO4 crystallizes in the orthorhombic Pmn2_1 space group. The structure is three-dimensional. Cd2+ is bonded in a 4-coordinate geometry to seven O2- atoms. There are a spread of Cd–O bond distances ranging from 2.28–2.98 Å. Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.67 Å) and two longer (1.69 Å) Se–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Cd2+ and one Se6+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Cd2+ and one Se6+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cd2+ and one Se6+ atom.