Gold(III) fluoride

Summary

Gold(III) fluoride[1]
AuF3structure.jpg
Names
IUPAC name
Gold(III) fluoride
Other names
Gold trifluoride
Auric fluoride
Identifiers
  • 14720-21-9 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:30077 checkY
ChemSpider
  • 10790539 checkY
  • 5460532
  • DTXSID10933057 Edit this at Wikidata
  • InChI=1S/Au.3FH/h;3*1H/q+3;;;/p-3 checkY
    Key: NIXONLGLPJQPCW-UHFFFAOYSA-K checkY
  • InChI=1/Au.3FH/h;3*1H/q+3;;;/p-3
    Key: NIXONLGLPJQPCW-DFZHHIFOAD
  • [Au+3].[F-].[F-].[F-]
Properties
AuF3
Molar mass 253.961779 g·mol−1
Appearance orange-yellow hexagonal crystals
Density 6.75 g/cm3
Melting point sublimes above 300°C
Insoluble
+74·10−6 cm3/mol
Structure
Hexagonal, hP24
P6122, No. 178
Thermochemistry
-363.3 kJ/mol
Related compounds
Other anions
Gold(III) chloride
Gold(III) bromide
Other cations
Silver fluoride
Copper(II) fluoride
Mercury(II) fluoride
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

Gold(III) fluoride, AuF3, is an orange solid that sublimes at 300 °C.[2] It is a powerful fluorinating agent.

Preparation

AuF3 can be prepared by reacting AuCl3 with F2 or BrF3.

Structure

The crystal structure of AuF3 consists of spirals of square-planar AuF4 units.[3]

Gold-trifluoride-unit-cell-3D-balls.png Gold-trifluoride-3D-balls.png Gold-trifluoride-coordination-3D-balls.png Gold-trifluoride-spiral-top-faded-3D-balls.png Gold-trifluoride-spiral-side-3D-balls.png
AuF3 unit cell neighbouring (AuF3)n helices distorted octahedral coordination of gold by six fluorines top-down view of an (AuF3)n helix side view of an (AuF3)n helix

References

  1. ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–59. ISBN 0-8493-0594-2.
  2. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8., p. 1184.
  3. ^ F. W. B. Einstein; P. R. Rao; James Trotter; Neil Bartlett (1967). "The crystal structure of gold trifluoride". Journal of the Chemical Society A: Inorganic, Physical, Theoretical. 4: 478–482. doi:10.1039/J19670000478.

External links

  • Media related to Gold trifluoride at Wikimedia Commons