Tellurium (II) Chloride (TeCl2)-Beads introduce:
Tellurium tetrachloride is the inorganic compound with the empirical formula TeCl4. The compound is volatile, subliming at 200 °C at 0.1 mmHg.
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
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.
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