Abstract
Abstract The cesium polytelluridostannate(IV) Cs2SnTe4 has been prepared by methanolothermal reaction of Cs2CO3 with Sn and Te at 190 °C. The crystal structure contains chain anions 1 ∞[SnTe2- 4] in which individual SnTe4 tetrahedra are linked via Te -Te bonds of length 2.814(3) Å. Weak Te∙∙∙Te secondary bonds of length 3.631(3)-3.663(3) Å connect neighbouring chains into a framework structure. Nine Te atoms from three chain anions participate in the coordination sphere of the cesium cation.
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