Tellurium (II) Chloride (TeCl2)-Powder

Characteristic




Tellurium tetrachloride is the inorganic compound with the empirical formula TeCl4. The compound is volatile, subliming at 200 °C at 0.1 mmHg.




Chemical formula：[TeCl4]4

Molar mass：1077.64 g/mol

Appearance：hygroscopic pale yellow solid   (if fused, maroon liquid)

Density：3.26 g/cm3, solid

Melting point：224 °C (435 °F; 497 K)

Boiling point：380 °C (716 °F; 653 K)

Crystal structure：Monoclinic, mS80




Application




TeCl4 is of occasional interest in organic synthesis. It adds to alkenes to give Cl-C-C-TeCl3 derivatives, wherein the Te can be subsequently removed with sodium sulfide. Electron-rich arenes react to give aryl Te compounds. Thus, anisole gives TeCl2(C6H4OMe)2, which can be reduced to the diaryl telluride.