Tellurium hexafluoride

Tellurium (VI ) fluoride

Colorless gas with a repulsive, disgusting smell

Gaseous

• 4.006 g · cm -3 ( -191 ° C)
• 2.499 g · cm -3 ( liquid at -10 ° C under pressure)

-38.9 ° C

-1319 KJ · mol -1

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Tellurium hexafluoride ( TeF6 ) is an inorganic chemical compound of the elements tellurium and fluorine. Tellurium is present in its highest oxidation state VI. Under normal conditions, tellurium hexafluoride is a colorless, poisonous gas.

Representation

Similar to selenium hexafluoride can tellurium hexafluoride from the elements produce ( direct synthesis ).

It may Vedas also represented by fluorination of tellurium dioxide with bromine trifluoride.

Properties

Physical Properties

Tellurium hexafluoride is physically interesting because of its relatively high density in gaseous form. Its critical temperature is 83.3 ° C, the triple point temperature of -37.7 ° C.

Chemical Properties

In contrast to its sulfur analogue tellurium hexafluoride is not inert. TeF6 is hydrolyzed in water to telluric H6TeO6.