Materials Data on Li2Co3SbO8 by Materials Project
Li2Co3SbO8 is Spinel-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with three equivalent SbO6 octahedra and corners with nine equivalent CoO6 octahedra. The corner-sharing octahedra tilt angles range from 57–63°. There is three shorter (1.95 Å) and one longer (2.03 Å) Li–O bond length. Co3+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six equivalent LiO4 tetrahedra, edges with two equivalent SbO6 octahedra, and edges with four equivalent CoO6 octahedra. There is two shorter (1.94 Å) and four longer (1.95 Å) Co–O bond length. Sb5+ is bonded to six equivalent O2- atoms to form SbO6 octahedra that share corners with six equivalent LiO4 tetrahedra and edges with six equivalent CoO6 octahedra. All Sb–O bond lengths are 2.02 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, two equivalent Co3+, and one Sb5+ atom. In the second O2- site, O2- is bonded to one Li1+ and three equivalent Co3+ atoms to form distorted corner-sharing OLiCo3 tetrahedra.