COF

COF is the abbreviation of:

Cradle of Filth

Cradle of Filth are a British extreme metal band that formed in Suffolk in 1991. The band's musical style evolved from black metal to a cleaner and more "produced" amalgam of gothic metal, symphonic black metal and other extreme metal styles. Their lyrical themes and imagery are heavily influenced by gothic literature, poetry, mythology and horror films.

The band has broken free from its original niche by courting mainstream publicity (often to the chagrin of its early fanbase), giving the band a "commercial" image. This increased accessibility has brought coverage from the likes of Kerrang! and MTV, along with frequent main stage appearances at major festivals such as Ozzfest, Download and even the mainstream Sziget Festival. They have sometimes been perceived as satanic by casual observers, even though their outright lyrical references to Satanism are few and far between; their use of satanic imagery has arguably always been more for shock value rather than any seriously held beliefs.

Cobalt(III) fluoride

Cobalt(III) fluoride is the inorganic compound with the formula CoF₃. This highly reactive, hygroscopic brown solid is used to synthesize organofluorine compounds. CoF₃ is a powerful fluorinating agent that leaves CoF₂ as the byproduct.

Preparation

CoF₃ is prepared in the laboratory by treating CoCl₂ with fluorine at 250 °C:

This conversion is a redox reaction: Co²⁺ and Cl⁻ are oxidized to Co³⁺ and Cl₂, respectively, while F₂ is reduced to F⁻. Cobalt(II) oxide (CoO) and cobalt(II) fluoride (CoF₂) can also be converted to cobalt(III) fluoride using fluorine.

Reactions

CoF₃ decomposes upon contact with water to give oxygen:

CoF₃ is hygroscopic, forming a dihydrate (CAS#54496-71-8). It reacts with fluoride sources to give the anion [CoF₆]³⁻, which is a rare example of a high-spin, octahedral cobalt(III) complex.

Applications

Used as slurry, CoF₃ converts hydrocarbons to the perfluorocarbons:

Such reactions are sometimes accompanied by rearrangements or other reactions. The related reagent KCoF₄ is more selective.