DOE OSTI2020
Mn3Co3(TeO8)2 is beta Vanadium nitride-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are three inequivalent Mn+5.33+ sites. In the first Mn+5.33+ site, Mn+5.33+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, and edges with four CoO6 octahedra. The corner-sharing octahedra tilt angles range from 48–50°. There are a spread of Mn–O bond distances ranging from 1.91–2.03 Å. In the second Mn+5.33+ site, Mn+5.33+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, edges with two equivalent MnO6 octahedra, and edges with two equivalent CoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–51°. There are a spread of Mn–O bond distances ranging from 1.91–2.03 Å. In the third Mn+5.33+ site, Mn+5.33+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with two equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, edges with two equivalent MnO6 octahedra, and edges with two equivalent CoO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of Mn–O bond distances ranging from 1.93–2.25 Å. There are three inequivalent Co+2.67+ sites. In the first Co+2.67+ site, Co+2.67+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, edges with two equivalent MnO6 octahedra, and edges with two equivalent CoO6 octahedra. The corner-sharing octahedra tilt angles range from 51–52°. There are a spread of Co–O bond distances ranging from 1.90–2.11 Å. In the second Co+2.67+ site, Co+2.67+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, edges with two equivalent MnO6 octahedra, and edges with two equivalent CoO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of Co–O bond distances ranging from 1.91–2.11 Å. In the third Co+2.67+ site, Co+2.67+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, and edges with four MnO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Co–O bond distances ranging from 1.89–2.13 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded to six O2- atoms to form TeO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four MnO6 octahedra, an edgeedge with one MnO6 octahedra, and edges with two CoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–51°. There are a spread of Te–O bond distances ranging from 1.92–2.02 Å. In the second Te4+ site, Te4+ is bonded to six O2- atoms to form TeO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four CoO6 octahedra, an edgeedge with one CoO6 octahedra, and edges with two MnO6 octahedra. The corner-sharing octahedra tilt angles range from 48–52°. There are a spread of Te–O bond distances ranging from 1.91–2.02 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Co+2.67+ and one Te4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Mn+5.33+ and two Co+2.67+ atoms. In the fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Mn+5.33+ and two Co+2.67+ atoms. In the fifth O2- site, O2- is bonded in a trigonal non-coplanar geometry to two Mn+5.33+ and one Co+2.67+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the seventh O2- site, O2- is bonded in a distorted T-shaped geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the eighth O2- site, O2- is bonded in a distorted T-shaped geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Co+2.67+ and one Te4+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Mn+5.33+ and one Te4+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the twelfth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the thirteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Mn+5.33+ and one Co+2.67+ atom. In the fourteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom. In the fifteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Mn+5.33+ and one Te4+ atom. In the sixteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mn+5.33+, one Co+2.67+, and one Te4+ atom.