Gold(III) fluoride
{{Other uses|Gold fluoride}}
{{Chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 443849917
| ImageFile = AuF3structure.jpg
{{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;" | 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 |
References
{{Reflist}}
External links
- {{Commons category inline}}
{{Gold compounds}}
{{fluorides}}
{{DEFAULTSORT:Gold(Iii) Fluoride}}
Category:Gold–halogen compounds
{{inorganic-compound-stub}}