Materials Data on Dy2(SeO4)3 by Materials Project
Dy2(SeO4)3 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Dy3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Dy–O bond distances ranging from 2.27–2.56 Å. There are two inequivalent Se6+ sites. In the first Se6+ site, Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.66–1.71 Å. In the second Se6+ site, Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.66 Å) and two longer (1.70 Å) Se–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Dy3+ and one Se6+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Dy3+ and one Se6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Dy3+ and one Se6+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Dy3+ and one Se6+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one Dy3+ and one Se6+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Dy3+ and one Se6+ atom.