The channel structure of trithallium penta-anti-m-on-ate(V), Tl 3 Sb 5 O 14 .

Single crystals of Tl 3 Sb 5 O 14 were grown by solid-state reaction in a corundum crucible under air (1273 K, 12 h). The structure was determined by single-crystal X-ray diffraction. It is isotypic to the K 3 Sb 5 O 14 , Rb 3 Sb 5 O 14 and Cs 3 Sb 5 O 14 analogues with ortho-rhom-bic Pbam symmetry and cell parameters a = 24.2899 (9) Å, b = 7.1931 (3) Å, c = 7.4182 (3) Å. The Sb atoms form irregular [SbO 6 ] octa-hedra, which are linked via edges and corners into a triperiodic network. The Tl + ions are located in distinct channels of the network extending along [010] and [001].