Gold(III) oxide

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Gold(III) oxide
Names
IUPAC name
Gold(III) oxide
Other names
Gold trioxide, Gold sesquioxide, Auric oxide
Identifiers
3D model (
JSmol
)
ECHA InfoCard
 100.013.748 Edit this at Wikidata
UNII
  • InChI=1S/2Au.3O/q2*+3;3*-2
    Key: DDYSHSNGZNCTKB-UHFFFAOYSA-N
  • [O-2].[O-2].[O-2].[Au+3].[Au+3]
Properties
Au2O3
Molar mass 441.93
Appearance red-brown solid
Density 11.34 g/cm3 at 20 °C[1]
Melting point 298 °C (568 °F; 571 K)[2]
insoluble in water, soluble in hydrochloric and nitric acid
Structure
Orthorhombic, oF40
Fdd2, No. 43[1]
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
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) oxide (Au2O3) is an inorganic compound of gold and oxygen with the formula Au2O3. It is a red-brown solid that decomposes at 298 °C.[3]

According to

picometers.[1] The crystals can be prepared by heating amorphous hydrated gold(III) oxide with perchloric acid and an alkali metal perchlorate in a sealed quartz tube at a temperature of around 250 °C and a pressure of around 30 MPa.[4]

References

  1. ^
    doi:10.1107/S0567740879006622
    .
  2. ISSN 0009-2673
    .
  3. ISBN 978-0-08-037941-8
    .
  4. doi:10.1007/BF03215453
    .

External links


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