TUNGSTEN TETRACHLORIDE Chemical Properties

Melting point:

decomposes [CRC10]

Boiling point:

338.99°C (estimate)

Density 

4,624 g/cm³

solubility 

reacts with H2O

form 

Powder

color 

gray

Specific Gravity

4.624

Sensitive 

moisture sensitive

Safety Information

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-27-28-36/37/39-45

RIDADR 

UN 3260 8/PG 2

WGK Germany 

3

HazardClass 

8

PackingGroup 

III

MSDS

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TUNGSTEN TETRACHLORIDE Usage And Synthesis

Description

Tungsten(IV) chloride, WCl4, is a black diamagnetic solid with a polymeric structure. It contains linear chains of tungsten atoms each in octahedral geometry. Of the six chloride ligands linked to each W center, four are bridging ligands. The W- W separations are alternatingly bonding (2.688 A? ) and nonbonding (3.787 A? ). WCl4 is typically produced by reducing WCl6. Many reductants have been reported, including red phosphorus, tungsten hexacarbonyl, gallium, tin, and antimony. The latter is reported to be optimal.
3WCl6+2Sb→3WCl4 +2SbCl3

Chemical Properties

gray powder(s); sensitive to moisture; decomposes if heated; diamagnetic; obtained by reduction of WCl6 with Al [KIR83] [STR93]

Uses

The product may be used as one of the precursor reactant for the preparation of highly conductive tungsten diselenide nanosheets.

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