Misplaced Pages

Gold(III) oxide

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

This is an old revision of this page, as edited by Skovtur (talk | contribs) at 10:52, 23 March 2023 (Orthorombic -> Orthorhombic). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Revision as of 10:52, 23 March 2023 by Skovtur (talk | contribs) (Orthorombic -> Orthorhombic)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)
Gold(III) oxide
Names
IUPAC name Gold(III) oxide
Other names Gold trioxide, Gold sesquioxide, Auric oxide
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.013.748 Edit this at Wikidata
PubChem CID
UNII
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2Au.3O/q2*+3;3*-2Key: DDYSHSNGZNCTKB-UHFFFAOYSA-N
SMILES
  • ....
Properties
Chemical formula Au2O3
Molar mass 441.93
Appearance red-brown solid
Density 11.34 g/cm at 20 °C
Melting point 298 °C (568 °F; 571 K)
Solubility in water insoluble in water, soluble in hydrochloric and nitric acid
Structure
Crystal structure Orthorhombic, oF40
Space group Fdd2, No. 43
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 , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

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.

According to X-ray crystallography, Au2O3 features square planar gold centers with both 2- and 3-coordinated oxides. The four Au-O bond distances range from 193 to 207 picometers. 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.

References

  1. ^ Jones, P. G.; Rumpel, H.; Schwarzmann, E.; Sheldrick, G. M.; Paulus, H. (1979). "Gold(III) oxide". Acta Crystallographica Section B. 35 (6): 1435. doi:10.1107/S0567740879006622.
  2. Kawamoto, Daisuke; Ando, Hiroaki; Ohashi, Hironori; Kobayashi, Yasuhiro; Honma, Tetsuo; Ishida, Tamao; Tokunaga, Makoto; Okaue, Yoshihiro; Utsunomiya, Satoshi; Yokoyama, Takushi (2016-11-15). "Structure of a Gold(III) Hydroxide and Determination of Its Solubility". Bulletin of the Chemical Society of Japan. 89 (11). The Chemical Society of Japan: 1385–1390. doi:10.1246/bcsj.20160228. ISSN 0009-2673.
  3. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  4. Jones, Peter G.; Rumpel, Horst; Sheldrick, George M.; Schwarzmann, Einhard (1980). "Gold(III) oxide and oxychloride" (open access). Gold Bulletin. 13 (2): 56. doi:10.1007/BF03215453.

External links

Oxygen compounds
Gold compounds
Gold(-I)
Gold(I)
Organogold(I) compounds
  • (AuC6H2(CH3)3)5
  • (C2H5)3PAuSC5H5O(CO2CH3)3CH2OCOCH3
  • AuSC5H5O(OH)3CH2OH
  • NaAuSCH2CHOHCH2SO3
  • BrAuSC4H8
  • ClAuSC4H8
  • ClAuS(CH3)2
  • ClAuP(C6H5)3
  • Na2AuSCHCO2CH2CO2
  • NaAuSCHCO2CH2CO2H
    • Gold(II)
    Gold(I,III)
    Gold(III)
    Aurates(III)
  • HAuCl4
  • NaAuCl4
  • HAuBr4
  • HAu(NO3)4
  • ClO2Au(ClO4)4
  • NaAuO2
    • Gold(V)
    Gold(VI)


    Stub icon

    This inorganic compound–related article is a stub. You can help Misplaced Pages by expanding it.

    Categories: