Tl₂MoO₄at 350K

Abstract

The structure of the title compound, dithallium molybdate, is isotypical with the glaserite structure and Tl 2 WO 4 . The Mo ion is coordinated tetrahedrally by oxygen, with bond lengths ranging from 1.699(16) to 1.725 (16) A, and angles between 107.6(4) and 111.3(4)°. The shortest O-O edge length is 2.83 (2) A. Three independent Tl ions are observed in the structure. The coordination polyhedron around T11 can be described as a distorted octahedron, with Tl-O distances of 2.769(10) A. T12 has a coordination number of 12, with six O atoms at a distance of 2.941 (10) A and the remaining six at a distance of 3.622 (10) A. The polyhedron around T13 is formed by ten O atoms, with distances ranging between 2.467 (16) and 3.682 (16) A. The observed bond distances in Tl 2 MoO 4 are in good agreement with those in Tl 2 WO 4 .