Gold(III) fluoride

Gold(III) fluoride[1]
Names
IUPAC name
Gold(III) fluoride
Other names
Gold trifluoride
Auric fluoride
Identifiers
14720-21-9 Yes
ChEBI CHEBI:30077 Yes
ChemSpider 10790539 Yes
Jmol-3D images Image
PubChem 5460532
Properties
AuF3
Molar mass 253.962 g/mol
Appearance orange-yellow hexagonal crystals
Density 6.75 g/cm3
Melting point sublimes above 300°C
Structure
Crystal structure Hexagonal, hP24
Space group P6122, No. 178
Thermochemistry
Std enthalpy of
formation (ΔfHo298)
 -363.3 kJ/mol
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 Yes verify (what is: Yes/?)
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]

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, FL: 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 0080379419., p. 1184.
  3. ↑ F. W. B. Einstein, P. R. Rao, James Trotter and 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.