Tellurium Tetrachloride

Elemental tellurium is mainly used as an additive to copper, iron and steel, in vulcanising rubber, as a colouring agent in glass and ceramics and in some other applications. Tellurium Tetrachloride is a white to off-white crystalline powder with melting point of 224 degree C and boiling point of 380 degree C. Its density is 3.26 g/ml and decomposes when soluble in water.

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Detailed Description for Tellurium Tetrachloride

Elemental tellurium is mainly used as an additive to copper, iron and steel, in vulcanising rubber, as a colouring agent in glass, ceramics and in some other applications (ACG99, Bud96). Certain telluride alloys are employed in the semiconductor industry (ACG99). Tellurium tetrachloride is also used as a catalyst in several condensation reactions. Tellurium dioxide is also used in acousto-optical filters in astronomy and in lasers, as a catalyst in oxidation reactions, in electro-conductivity devices, as an additive in glass, in optical and photoacoustic devices. Tellurium trioxide is used as a catalyst in oxidation reactions.

 

Tellurium tetrachloride is the inorganic compound with the empirical formula TeCl4. The compound is unstable, subliming at 200°C at 0.1 mm Hg. Molten TeCl4 is ionic, dissociating into ions TeCl3+ and Te2Cl102.

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white to off-white crystalline powder

MELTING POINT

224 degree C (sublimes)

BOILING POINT

380 degree C

DENSITY

3.26 g/ml

SOLUBILITY IN WATER

Decomposes

 

Product Name

Tellurium Chloride

Appearance

white powder

Molecular Formula

TeCl4

Molecular Weight

269.4

Melting Point

224°C

Boiling Point

380°C(resolve)

Density

2.95 (g/mL,25°C)

Relative Density

3.260 (water = 1)

CAS No.

10026-07-0

EINECS No.

233-055-6


 

Applications:

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


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