Materials Data on CoTe2O5 by Materials Project
CoTe2O5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share edges with two equivalent CoO6 octahedra and an edgeedge with one TeO5 square pyramid. There are a spread of Co–O bond distances ranging from 2.06–2.23 Å. There are three inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded to five O2- atoms to form distorted TeO5 square pyramids that share edges with two equivalent CoO6 octahedra. There are a spread of Te–O bond distances ranging from 1.92–2.27 Å. In the second Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.91–2.48 Å. In the third Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. All Te–O bond lengths are 1.92 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Co2+ and two Te4+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Te4+ atoms. In the third O2- site, O2- is bonded in a trigonal non-coplanar geometry to two equivalent Co2+ and one Te4+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Co2+ and one Te4+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Co2+ and one Te4+ atom. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to one Co2+ and two Te4+ atoms.