Materials Data on TlCr(MoO4)2 by Materials Project
CrTl(MoO4)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with three equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 14–34°. There are a spread of Mo–O bond distances ranging from 1.76–1.82 Å. In the second Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with three equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 32–34°. There is one shorter (1.74 Å) and three longer (1.82 Å) Mo–O bond length. Cr3+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six MoO4 tetrahedra. There are a spread of Cr–O bond distances ranging from 1.97–2.02 Å. Tl1+ is bonded in a 1-coordinate geometry to eleven O2- atoms. There are a spread of Tl–O bond distances ranging from 2.72–3.43 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mo6+, one Cr3+, and one Tl1+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+, one Cr3+, and two equivalent Tl1+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+, one Cr3+, and two equivalent Tl1+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Mo6+ and one Tl1+ atom. In the fifth O2- site, O2- is bonded in a linear geometry to one Mo6+ and one Cr3+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Mo6+ and two equivalent Tl1+ atoms.