Materials Data on K2(TeO4)3 by Materials Project

Abstract

K2(TeO4)3 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.72–3.12 Å. There are two inequivalent Te sites. In the first Te site, Te is bonded to six O atoms to form corner-sharing TeO6 octahedra. The corner-sharing octahedra tilt angles range from 48–50°. There are a spread of Te–O bond distances ranging from 1.90–2.01 Å. In the second Te site, Te is bonded to six O atoms to form a mixture of edge and corner-sharing TeO6 octahedra. The corner-sharing octahedra tilt angles range from 48–50°. There are a spread of Te–O bond distances ranging from 1.88–2.03 Å. There are six inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to two equivalent K and one Te atom. In the second O site, O is bonded in a distorted trigonal non-coplanar geometry to two equivalent K and one Te atom. In the third O site, O is bonded in a distorted water-like geometry to one K and one Te atom. In the fourth O site, O is bonded in a 3-coordinate geometry to one K and two equivalent Te atoms. In the fifth O site, O is bonded in a distorted trigonal non-coplanar geometry to one K and two Te atoms. In the sixth O site, O is bonded in a 2-coordinate geometry to one K and two Te atoms.