Gold(III) chloride

Gold(III) chloride
	; Ball-and-stick model of AuCl3
	; Crystal structure of AuCl3
Names
	IUPAC name Gold(III) trichloride
	Other names Auric chloride; Gold trichloride
Identifiers
CAS Number	13453-07-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30076 ;
ChemSpider	24244 ;
ECHA InfoCard	100.033.280
PubChem CID	26030;
RTECS number	MD5420000;
UNII	15443PR153 ;
CompTox Dashboard (EPA)	DTXSID4044379 ;
	InChI InChI=1S/Au.3ClH/h;31H/q+3;;;/p-3 Key: RJHLTVSLYWWTEF-UHFFFAOYSA-K ; InChI=1/Au.3ClH/h;31H/q+3;;;/p-3 Key: RJHLTVSLYWWTEF-DFZHHIFOAC;
	SMILES Cl[Au-]1(Cl)[Cl+][Au-]([Cl+]1)(Cl)Cl;
Properties
Chemical formula	AuCl3; (exists as Au2Cl6)
Molar mass	606.6511 g/mol
Appearance	Red crystals (anhydrous); golden, yellow crystals (monohydrate)
Density	4.7 g/cm3
Melting point	160 °C (320 °F; 433 K) (decomposes)
Solubility in water	68 g/100 ml (20 °C)
Solubility	soluble in ether and ethanol, slightly soluble in liquid ammonia, insoluble in benzene
Magnetic susceptibility (χ)	−112·10−6 cm3/mol
Structure
Crystal structure	monoclinic
Space group	P21/C
Lattice constant	a = 6.57 Å, b = 11.04 Å, c = 6.44 Å α = 90°, β = 113.3°, γ = 90°
Coordination geometry	Square planar
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−117.6 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P305+P351+P338
Related compounds
Other anions	Gold(III) fluoride; Gold(III) bromide
Other cations	Gold(I) chloride; Silver(I) chloride; Platinum(II) chloride; Mercury(II) chloride
Supplementary data page
	Gold(III) chloride (data page)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Gold(III) chloride, traditionally called auric chloride, is an inorganic compound of gold and chlorine with the molecular formula Au₂Cl₆. The "III" in the name indicates that the gold has an oxidation state of +3, typical for many gold compounds. It has two forms, the monohydrate (AuCl₃·H₂O) and the anhydrous form, which are both hygroscopic and light-sensitive solids. This compound is a dimer of AuCl₃. This compound has a few uses, such as an oxidizing agent and for catalyzing various organic reactions.

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