Materials Data on RbSb2PO8 by Materials Project

Abstract

RbSb2PO8 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Rb–O bond distances ranging from 2.88–3.42 Å. In the second Rb1+ site, Rb1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Rb–O bond distances ranging from 2.89–3.50 Å. There are four inequivalent Sb5+ sites. In the first Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with four SbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 49–50°. There are a spread of Sb–O bond distances ranging from 1.97–2.08 Å. In the second Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with two SbO6 octahedra, corners with two PO4 tetrahedra, and an edgeedge with one SbO6 octahedra. The corner-sharing octahedra tilt angles range from 49–50°. There are a spread of Sb–O bond distances ranging from 1.96–2.11 Å. In the third Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with four SbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 49–50°. There are a spread of Sb–O bond distances ranging from 1.97–2.08 Å. In the fourth Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with two SbO6 octahedra, corners with two PO4 tetrahedra, and an edgeedge with one SbO6 octahedra. The corner-sharing octahedra tilt angles range from 49–50°. There are a spread of Sb–O bond distances ranging from 1.96–2.12 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four SbO6 octahedra. The corner-sharing octahedra tilt angles range from 25–53°. There are a spread of P–O bond distances ranging from 1.54–1.56 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four SbO6 octahedra. The corner-sharing octahedra tilt angles range from 25–53°. There is one shorter (1.54 Å) and three longer (1.55 Å) P–O bond length. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Sb5+, and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+ and two Sb5+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+ and two Sb5+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Sb5+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Rb1+ and two Sb5+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Sb5+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Rb1+, one Sb5+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Sb5+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to two Rb1+ and two Sb5+ atoms. In the tenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Rb1+ and two Sb5+ atoms. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Rb1+, one Sb5+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Sb5+, and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Rb1+ and two Sb5+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Rb1+ and two Sb5+ atoms. In the fifteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+ and two Sb5+ atoms. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Sb5+, and one P5+ atom.