Copper(I) fluoride

Copper(I) fluoride
Names
	IUPAC name Copper(I) fluoride
	Systematic IUPAC name Fluorocopper
	Other names Cuprous fluoride
Identifiers
CAS Number	13478-41-6 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	2341261 ;
PubChem CID	3084153;
CompTox Dashboard (EPA)	DTXSID50158944 ;
	InChI InChI=1S/Cu.FH/h;1H/q+1;/p-1 Key: BMRUOURRLCCWHB-UHFFFAOYSA-M ; InChI=1/Cu.FH/h;1H/q+1;/p-1 Key: BMRUOURRLCCWHB-REWHXWOFAQ;
	SMILES F[Cu]; [Cu]F;
Properties
Chemical formula	CuF
Molar mass	82.544 g·mol−1
Density	7.1 g cm−3
Structure
Crystal structure	sphalerite
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
NFPA 704 (fire diamond)	3 0 0
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m3 (as Cu)
REL (Recommended)	TWA 1 mg/m3 (as Cu)
IDLH (Immediate danger)	TWA 100 mg/m3 (as Cu)
Related compounds
Other anions	Copper(I) chloride; Copper(I) bromide; Copper(I) iodide
Other cations	Silver(I) fluoride; Gold(I) fluoride
Related compounds	Copper(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

Copper(I) fluoride or cuprous fluoride is an inorganic compound with the chemical formula CuF. Its existence is uncertain. It was reported in 1933 to have a sphalerite-type crystal structure. Modern textbooks state that CuF is not known, since fluorine is so electronegative that it will always oxidise copper to its +2 oxidation state. Complexes of CuF such as [(Ph₃P)₃CuF] are, however, known and well characterised.

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