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Antimony pentafluoride
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<p>Antimony pentafluoride is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula <a href="/facts/Antimony/YsA7lVgT">Sb</a><a href="/facts/Fluoride/LpqNMzwa">F</a>5. This colourless, viscous liquid is a strong <a href="/facts/Lewis_acid/qlLqRvg2">Lewis acid</a> and a component of the <a href="/facts/Superacid/dg82EcNa">superacid</a> <a href="/facts/Fluoroantimonic_acid/HfSxCACr">fluoroantimonic acid</a>, formed upon mixing liquid <a href="/facts/Hydrogen_fluoride/XfQxlqR6">HF</a> with liquid SbF5 in 1:1 ratio. It is notable for its strong Lewis acidity and the ability to react with almost all known compounds. </p>