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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Rb(TeO3)2 by Materials Project

Rb(TeO3)2 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Rb is bonded to six equivalent O atoms to form RbO6 octahedra that share corners with twelve equivalent TeO6 octahedra. The corner-sharing octahedral tilt angles are 68°. All Rb–O bond lengths are 3.21 Å. Te is bonded to six equivalent O atoms to form TeO6 octahedra that share corners with six equivalent RbO6 octahedra and corners with six equivalent TeO6 octahedra. The corner-sharing octahedra tilt angles range from 43–68°. All Te–O bond lengths are 2.00 Å. O is bonded in a 3-coordinate geometry to one Rb and two equivalent Te atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RbY(TeO3)2 by Materials Project

RbY(TeO3)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Rb–O bond distances ranging from 3.00–3.15 Å. Y3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.26–2.32 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There is two shorter (1.89 Å) and one longer (1.90 Å) Te–O bond length. In the second Te4+ site, Te4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.88 Å) and two longer (1.89 Å) Te–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Y3+ and one Te4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+, one Y3+, and one Te4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Rb1+, one Y3+, and one Te4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Rb1+, one Y3+, and one Te4+ atom.

36 MATERIALS SCIENCE↗