Gold(III) fluoride

{{Other uses|Gold fluoride}}

{{Chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 443849917

| ImageFile = AuF3structure.jpg

| Reference =

{{cite book | last = Lide | first = David R. | year = 1998

| title = Handbook of Chemistry and Physics

| edition = 87 | location = Boca Raton, Florida

| publisher = CRC Press

| isbn = 0-8493-0594-2 | pages = 4–59}}

| IUPACName = Gold(III) fluoride

| OtherNames = Gold trifluoride
Auric fluoride

|Section1={{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 10790539

| InChI = 1/Au.3FH/h;3*1H/q+3;;;/p-3

| InChIKey = NIXONLGLPJQPCW-DFZHHIFOAD

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/Au.3FH/h;3*1H/q+3;;;/p-3

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = NIXONLGLPJQPCW-UHFFFAOYSA-K

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 14720-21-9

| PubChem = 5460532

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 30077

| SMILES = [Au+3].[F-].[F-].[F-]

}}

|Section2={{Chembox Properties

| Au = 1 | F = 3

| Appearance = orange-yellow hexagonal crystals

| Density = 6.75 g/cm3

| MeltingPt = sublimes above 300 °C

| BoilingPt =

| Solubility = Reacts{{cite journal |author1=Victor Lenher |title=Fluoride of Gold |journal=Journal of the American Chemical Society |date=1903 |volume=25 |issue=11 |pages=1136–1138 |doi=10.1021/ja02013a004 |url=https://zenodo.org/record/1707291 |language=en}}

| MagSus = +74·10−6 cm3/mol }}

|Section3={{Chembox Structure

| CrystalStruct = Hexagonal, hP24

| SpaceGroup = P6122, No. 178

}}

|Section5={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt = }}

|Section6={{Chembox Thermochemistry

| DeltaHf = −363.3 kJ/mol

| DeltaHc =

| Entropy =

| HeatCapacity = }}

|Section8={{Chembox Related

| OtherAnions = Gold(III) chloride
Gold(III) bromide

| OtherCations = Silver fluoride
Copper(II) fluoride
Mercury(II) fluoride}}

}}

Gold(III) fluoride is an inorganic compound of gold and flourine with the molecular formula {{chem2|auto=1|AuF3}}. It is an orange solid that sublimes at 300 °C.{{Greenwood&Earnshaw}}, p. 1184. 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.{{cite journal |author1=Inis C. Tornieporth-Oetting |author2=Thomas M. Klapötke |title=Laboratory Scale Direct Synthesis of Pure AuF3 |journal=Chemische Berichte |date=1995 |volume=128 |issue=9 |pages=957–958 |doi=10.1002/cber.19951280918 |language=en}}

Structure

The crystal structure of AuF3 consists of spirals of square-planar AuF4 units.{{cite journal |author1=F. W. B. Einstein |author2=P. R. Rao |author3=James Trotter |author4=Neil Bartlett | title = The crystal structure of gold trifluoride | year = 1967 | journal = Journal of the Chemical Society A: Inorganic, Physical, Theoretical | volume = 4 | pages = 478–482 | doi = 10.1039/J19670000478 }}

class="wikitable" style="margin:1em auto; text-align:center;"

|100px

200px80px100px70px
AuF3 unit cellneighbouring (AuF3)n helicesdistorted octahedral coordination of gold by six fluorinestop-down view of an (AuF3)n helixside view of an (AuF3)n helix

References

{{Reflist}}