Materials Data on LiCr2(MoO4)3 by Materials Project
LiCr2(MoO4)3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Li1+ is bonded to five O2- atoms to form LiO5 trigonal bipyramids that share corners with five MoO4 tetrahedra, edges with two equivalent CrO6 octahedra, and an edgeedge with one LiO5 trigonal bipyramid. There are a spread of Li–O bond distances ranging from 2.03–2.29 Å. There are three inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with five CrO6 octahedra. The corner-sharing octahedra tilt angles range from 20–57°. There are a spread of Mo–O bond distances ranging from 1.77–1.84 Å. In the second Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with four CrO6 octahedra and corners with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 18–57°. There are a spread of Mo–O bond distances ranging from 1.76–1.84 Å. In the third Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with three CrO6 octahedra and corners with three equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 6–52°. There are a spread of Mo–O bond distances ranging from 1.76–1.88 Å. There are two inequivalent Cr+2.50+ sites. In the first Cr+2.50+ site, Cr+2.50+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six MoO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 2.02–2.21 Å. In the second Cr+2.50+ site, Cr+2.50+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six MoO4 tetrahedra and edges with two equivalent LiO5 trigonal bipyramids. There are a spread of Cr–O bond distances ranging from 1.99–2.04 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mo6+ and two equivalent Cr+2.50+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Cr+2.50+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Cr+2.50+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Mo6+, and one Cr+2.50+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Cr+2.50+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mo6+ and one Cr+2.50+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Cr+2.50+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Cr+2.50+ atom. In the tenth O2- site, O2- is bonded in a linear geometry to one Mo6+ and one Cr+2.50+ atom. In the eleventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to two equivalent Li1+, one Mo6+, and one Cr+2.50+ atom. In the twelfth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Mo6+, and one Cr+2.50+ atom.