DOI: 10.17188/1747742
title: Materials Data on Rb2Th3Mg(MoO4)8 by Materials Project

description: Rb2MgTh3(MoO4)8 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are a spread of Rb–O bond distances ranging from 2.91–3.44 Å. Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MoO4 tetrahedra. There are a spread of Mg–O bond distances ranging from 2.07–2.16 Å. There are two inequivalent Th4+ sites. In the first Th4+ site, Th4+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Th–O bond distances ranging from 2.37–2.47 Å. In the second Th4+ site, Th4+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Th–O bond distances ranging from 2.35–2.54 Å. There are four inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.79 Å) and two longer (1.80 Å) Mo–O bond length. In the second Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share a cornercorner with one MgO6 octahedra. The corner-sharing octahedral tilt angles are 15°. There are a spread of Mo–O bond distances ranging from 1.78–1.83 Å. In the third Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.74–1.82 Å. In the fourth Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with two equivalent MgO6 octahedra. The corner-sharing octahedra tilt angles range from 13–36°. There are a spread of Mo–O bond distances ranging from 1.77–1.82 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one Th4+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+, one Th4+, and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Th4+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Th4+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Rb1+, one Th4+, and one Mo6+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Mg2+, and one Mo6+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Th4+ and one Mo6+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Th4+, and one Mo6+ atom. In the ninth O2- site, O2- is bonded in a distorted linear geometry to one Rb1+, one Mg2+, and one Mo6+ atom. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Th4+, and one Mo6+ atom. In the eleventh O2- site, O2- is bonded in a linear geometry to one Mg2+ and one Mo6+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Th4+ and one Mo6+ atom. In the thirteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Th4+ and one Mo6+ atom. In the fourteenth O2- site, O2- is bonded in a linear geometry to one Th4+ and one Mo6+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Th4+, and one Mo6+ atom. In the sixteenth O2- site, O2- is bonded in a single-bond geometry to one Rb1+ and one Mo6+ atom.