Gold(III) chloride

Gold(III) chloride


Crystal structure of AuCl3
Names
IUPAC name
Gold(III) trichloride
Other names
Auric chloride
Gold trichloride
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.033.280 Edit this at Wikidata
RTECS number
  • MD5420000
UNII
  • InChI=1S/Au.3ClH/h;3*1H/q+3;;;/p-3 checkY
    Key: RJHLTVSLYWWTEF-UHFFFAOYSA-K checkY
  • InChI=1/Au.3ClH/h;3*1H/q+3;;;/p-3
    Key: RJHLTVSLYWWTEF-DFZHHIFOAC
  • Cl[Au-]1(Cl)[Cl+][Au-]([Cl+]1)(Cl)Cl
Properties
AuCl3
(exists as Au2Cl6)
Molar mass 606.6511 g/mol
Appearance Red crystals (anhydrous); golden, yellow crystals (monohydrate)[1]
Density 4.7 g/cm3
Melting point 160 °C (320 °F; 433 K) (decomposes)
68 g/100 ml (20 °C)
Solubility soluble in ether and ethanol, slightly soluble in liquid ammonia, insoluble in benzene
−112·10−6 cm3/mol
Structure
monoclinic
P21/C
a = 6.57 Å, b = 11.04 Å, c = 6.44 Å
α = 90°, β = 113.3°, γ = 90°[2]
Square planar
Thermochemistry
−117.6 kJ/mol[3]
Hazards[4]
Occupational safety and health (OHS/OSH):
Main hazards
Irritant
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
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).
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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.

  1. ^ Cite error: The named reference wiberg_holleman was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference crys was invoked but never defined (see the help page).
  3. ^ Haynes, William M.; Lide, David R.; Bruno, Thomas J., eds. (2016). CRC Handbook of Chemistry and Physics: A Ready-reference Book of Chemical and Physical Data (95th ed.). Boca Raton, Florida. p. 5-5. ISBN 978-1-4987-5428-6. OCLC 930681942.{{cite book}}: CS1 maint: location missing publisher (link)
  4. ^ "Gold Chloride". American Elements. Retrieved July 22, 2019.