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". 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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Names

IUPAC name Gold(III) fluoride
Other names Gold trifluoride Auric fluoride
Identifiers
CAS Number	14720-21-9^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30077^Y
ChemSpider	10790539^Y
PubChem CID	5460532
CompTox Dashboard (EPA)	DTXSID10933057
InChI InChI=1S/Au.3FH/h;31H/q+3;;;/p-3^Y Key: NIXONLGLPJQPCW-UHFFFAOYSA-K^Y 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^[2]^[3]
Magnetic susceptibility (χ)	+74·10⁻⁶ cm³/mol
Structure
Crystal structure	Hexagonal, hP24
Space group	P6₁22, No. 178
Thermochemistry
Std enthalpy of formation (Δ_fH^⦵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). N verify (what is ^YN ?) Infobox references