Materials Data on Cs2Zr(SiO3)3 by Materials Project

Abstract

Cs2Zr(SiO3)3 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. Cs1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Cs–O bond distances ranging from 3.24–3.35 Å. Zr4+ is bonded to six equivalent O2- atoms to form ZrO6 octahedra that share corners with six equivalent SiO4 tetrahedra. All Zr–O bond lengths are 2.12 Å. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent ZrO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 30°. There are a spread of Si–O bond distances ranging from 1.62–1.68 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent Cs1+, one Zr4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cs1+ and two equivalent Si4+ atoms.