Tetrabromoauric acid
# Tetrabromoauric acid

Tetrabromoauric acid is an inorganic compound with the formula $H[AuBr_4].$ It is the bromide analog of chloroauric acid. It is generated analogously, by reacting a mixture of hydrobromic and nitric acids with elemental gold. The oxidation state of gold in $H[AuBr_4]$ and $[AuBr_4]^−$ anion is +3. The salts of $H[AuBr_4]$ (tetrabromoauric(III) acid) are tetrabromoaurates(III), containing $[AuBr_4]^−$ anions (tetrabromoaurate(III) anions), which have square planar molecular geometry.

