On the knowledge of two thallium-tellurochromites [TlCrTe2 and TlCr5Te8]

The title compounds were prepared and their crystal structures determined. TlCrTe2 is hexagonal (a = 4.016 Å, c = 7.927 Å) having a CdI2 derived pseudo-intercalation structure. The single crystal refinement of TlCr5Te8 (monoclinic TlV5S8 type, a = 20.241 Å, b = 3.9141 Å, c = 9.481 Å, β = 104.65 °) revealed a disorder of thallium in a split position within the channels of the [Cr5Te8] framework.