Gold(III) fluoride

Gold(III) fluoride

Names
IUPAC name Gold(III) fluoride
Other names Gold trifluoride Auric fluoride
Identifiers
CAS Number	14720-21-9 Y
ChEBI	CHEBI:30077 Y
ChemSpider	10790539 Y
Jmol 3D model	Interactive image
PubChem	5460532
InChI InChI=1S/Au.3FH/h;3*1H/q+3;;;/p-3 Y Key: NIXONLGLPJQPCW-UHFFFAOYSA-K Y InChI=1/Au.3FH/h;3*1H/q+3;;;/p-3 Key: NIXONLGLPJQPCW-DFZHHIFOAD
SMILES [Au+3].[F-].[F-].[F-]
Properties
Chemical formula	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
Vapor pressure	{{{value}}}
Thermochemistry
Std enthalpy of formation (ΔfHo298)	-363.3 kJ/mol
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. 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.

100px	200px	80px	100px	70px
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