Materials Data on Nd2(SeO4)3 by Materials Project
Nd2(SeO4)3 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.37–2.61 Å. There are two inequivalent Se6+ sites. In the first Se6+ site, Se6+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.69–1.78 Å. In the second Se6+ site, Se6+ is bonded in a tetrahedral geometry to four O2- atoms. All Se–O bond lengths are 1.67 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Nd3+ and one Se6+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Nd3+ and one Se6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Nd3+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Nd3+ and one Se6+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Nd3+ and one Se6+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Nd3+ and one Se6+ atom.