Characteristic

Gold(III) bromide is a dark-red to black crystalline solid.It has the empirical formula AuBr3, but exists primarily as a dimer with the molecular formula Au2Br6 in which two gold atoms are bridged by two bromine atoms.

Chemical formula:AuBr₃

Molar mass:436.69 g/mol

Appearance:dark red to black crystalline

Melting point:97.5 °C (207.5 °F; 370.6 K)

Application

Gold(III) bromide is used as a catalyst in a variety of reactions. It catalyzes the reaction between an enynal unit and carbonyl compounds to form a six-membered cyclic compound. Another catalytic use of gold tribromide is in the nucleophilic substitution reaction of propargylic alcohols, with the gold complex acting as an alcohol-activating agent to facilitate the substitution. It can be used as a testing reagent for the presence of ketamine.