KSbF

KSbF, also known as potassium antimonide, is an inorganic chemical compound with the formula KSb. It is a salt formed between potassium, a highly electropositive alkali metal, and antimony, a metalloid with properties between metals and nonmetals. KSbF is a gray solid under standard conditions and is known for its reactivity. It belongs to the group of alkali metal antimonides, which are characterized by the presence of the Sb^3- anion. This anion is highly basic and can act as a nucleophile.

The synthesis of KSbF typically involves the reaction of elemental potassium with elemental antimony, often under inert atmosphere conditions due to the high reactivity of potassium and the potential for oxidation. Alternatively, it can be prepared by reacting potassium hydride with antimony. KSbF is soluble in liquid ammonia, where it dissociates to some extent. In the presence of protic solvents like water, KSbF will readily hydrolyze, producing potassium hydroxide and stibine (SbH3), a highly toxic and flammable gas. Due to its instability in air and moisture, KSbF is usually handled and stored under an inert atmosphere. Its primary applications are in research settings, particularly in studies of alkali metal compounds and the chemistry of antimony.