Ammonium hexafluorophosphate is the

inorganic compound In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...

with the formula NH₄PF₆. It is a white water-soluble, hygroscopic solid. The compound is a salt consisting of the

ammonium The ammonium cation is a positively-charged polyatomic ion with the chemical formula or . It is formed by the protonation of ammonia (). Ammonium is also a general name for positively charged or protonated substituted amines and quaternary a ...

cation and hexafluorophosphate anion. It is commonly used as a source of the hexafluorophosphate anion, a weakly coordinating anion. It is prepared by combining neat ammonium fluoride and phosphorus pentachloride. Alternatively it can also be produced from

phosphonitrilic chloride Hexachlorophosphazene is an inorganic compound with the formula . The molecule has a cyclic, unsaturated backbone consisting of alternating phosphorus and nitrogen centers, and can be viewed as a trimer of the hypothetical compound . Its classi ...

: :PCl₅ + 6 NH₄F → NH₄PF₆ + 5 NH₄Cl :PNCl₂ + 6 HF → NH₄PF₆ + 2 HCl

References

Ammonium compounds Hexafluorophosphates {{inorganic-compound-stub