Tl2MoO4 at 350 K

The structure of the title compound, dithallium molybdate, is isotypical wi th the glaserite structure and Tl2WO4. The Mo ion is coordinated tetrahedra lly by oxygen, with bond lengths ranging from 1.699(16) to 1.725(16) Angstr om, and angles between 107.6(4) and 111.3(4)degrees. The shortest O-O edge length is 2.83 (2) Angstrom. Three independent Tl ions are observed in the structure. The coordination polyhedron around Tll can be described as a dis torted octahedron, with Tl-O distances of 2.769 (10) Angstrom. Tl2 has a co ordination number of 12, with six O atoms at a distance of 2.941(10) Angstr om and the remaining six at a distance of 3.622 (10) Angstrom. The polyhedr on around Tl3 is formed by ten O atoms, with distances ranging between 2.46 7(16) and 3.682(16) Angstrom. The observed bond distances in Tl2MoO4 are in good agreement with those in Tl2WO4.