Gold(III) bromide

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. It is commonly referred to as gold(III) bromide, gold tribromide, and rarely but traditionally auric bromide, and sometimes as digold hexabromide. As is similar with the other gold halides, this compound is unique for being a coordination complex of a group 11 transition metal that is stable in an oxidation state of +3 whereas copper or silver complexes persist in oxidation states of +1 or +2.

Gold(III) bromide
Names
Other names
Auric bromide
Gold bromide
Gold(III) bromide
Gold tribromide
Digold hexabromide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.030.582
EC Number
  • 233-654-2
164245
PubChem CID
UNII
  • InChI=1S/Au.3BrH/h;3*1H/q+3;;;/p-3 Y
    Key: OVWPJGBVJCTEBJ-UHFFFAOYSA-K Y
  • InChI=1S/Au.3BrH/h;3*1H/q+3;;;/p-3
    Key: OVWPJGBVJCTEBJ-DFZHHIFOAK
  • Key: OVWPJGBVJCTEBJ-UHFFFAOYSA-K
SMILES
  • ionic form: [Au+3].[Br-].[Br-].[Br-]
  • covalent form: Br[Au-]1(Br)[Br+][Au-]([Br+]1)(Br)Br
Properties
AuBr3
Molar mass 436.679 g·mol−1
Appearance dark red to black crystals
Melting point 97.5 °C (207.5 °F; 370.6 K)
Slightly soluble
Hazards
GHS labelling:
Danger
H314
P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, P501
NFPA 704 (fire diamond)
3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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