Hexafluoroacetone

It is a colourless, hygroscopic, nonflammable, highly reactive gas characterized by a musty odour.

[2] According to electron diffraction, HFA and acetone adopt very similar structures, the C-O distance being only longer in the fluorinated compound (124.6 vs 121.0 pm), possibly due to steric effects.

[5] It has also be prepared from hexafluoropropylene oxide, which will rearrange to give HFA when heated in the presence of a Lewis acid such as AlCl3.

[7] In the first step KF catalyzes the reaction of the alkene with elemental sulfur to give the 1,3-dithietane dimer of hexafluorothioacetone.

[8] Hexafluoroacetone is used in the production of hexafluoroisopropanol: It is also used as a precursor to hexafluoroisobutylene,[4] a monomer used in polymer chemistry, and as a building block in the synthesis of midaflur, bisphenol AF, 4,4′-(hexafluoroisopropylidene)diphthalic anhydride, and alitame.

Hexafluoropropanone skeletal structure
Hexafluoropropanone skeletal structure
Hexafluoropropanone 3D structure
Hexafluoropropanone 3D structure
NFPA 704 four-colored diamond Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas Flammability 0: Will not burn. E.g. water Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus Special hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
Hexafluoroacetone imine is an unusual primary ketimine that is isolable.
Ammonia adduct of hexafluoroacetone