Hexafluorobenzene

• Perfluorobenzene
• Hexafluorobenzene

Colorless liquid

Liquid

1.612 g · cm -3 ( 25 ° C)

3.7-4.1 ° C

80-82 ° C

77 hPa ( 20 ° C)

Insoluble in water

1,377

Risk

-224.0 ± 2.0 kcal / mol

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Hexafluorobenzene ( C6F6 ), is an aromatic compound. The molecule is constructed as benzene, except that all the hydrogen atoms have been replaced by fluorine atoms. It is a colorless, flammable liquid and non-polar, therefore insoluble in water. Hexafluorobenzene has with its melting point of 3.7-4.1 ° C and its boiling point of 80-82 ° C hardly any difference to his substitution inverse, pure benzene. It is, inter alia, in the 19F NMR spectroscopy used.

Representation

Direct synthesis of hexafluorobenzene and benzene from fluorine is not possible. The synthetic route for example, via the reaction of anhydrous potassium fluoride with hexachlorobenzene in an autoclave at 450-500 ° C: