Gold(III) fluoride

Gold(III) fluoride^[1]
Names
	IUPAC name Gold(III) fluoride
	Other names Gold trifluoride; Auric fluoride
Identifiers
CAS Number	14720-21-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30077 ;
ChemSpider	10790539 ;
PubChem CID	5460532;
CompTox Dashboard (EPA)	DTXSID10933057 ;
	InChI InChI=1S/Au.3FH/h;31H/q+3;;;/p-3 Key: NIXONLGLPJQPCW-UHFFFAOYSA-K ; InChI=1/Au.3FH/h;31H/q+3;;;/p-3 Key: NIXONLGLPJQPCW-DFZHHIFOAD;
	SMILES [Au+3].[F-].[F-].[F-];
Properties
Chemical formula	AuF3
Molar mass	253.961779 g·mol−1
Appearance	orange-yellow hexagonal crystals
Density	6.75 g/cm3
Melting point	sublimes above 300°C
Solubility in water	Reacts
Magnetic susceptibility (χ)	+74·10−6 cm3/mol
Structure
Crystal structure	Hexagonal, hP24
Space group	P6122, No. 178
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-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). verify (what is ?) Infobox references

Gold(III) fluoride, Au F₃, is an orange solid that sublimes at 300 °C.^[4] It is a powerful fluorinating agent. It is very sensitive to moisture, yielding gold(III) hydroxide and hydrofluoric acid.

Preparation

AuF₃ can be prepared by reacting AuCl₃ with F₂ or BrF₃.^[3]

The crystal structure of AuF₃ consists of spirals of square-planar AuF₄ units.^[5]


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

^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–59. ISBN 0-8493-0594-2.
^ Victor Lenher (1903). "Fluoride of Gold.1". Journal of the American Chemical Society. 25 (11): 1136–1138. doi:10.1021/ja02013a004.
^ ^a ^b Inis C. Tornieporth-Oetting; Thomas M. Klapötke (1995). "Laboratory Scale Direct Synthesis of Pure AuF3". Chemische Berichte. 128 (9): 957–958. doi:10.1002/cber.19951280918.
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8., p. 1184.
^ 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.

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