Copper(I) fluoride

Chemical compound From Wikipedia, the free encyclopedia

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.[3] Modern textbooks state that CuF is not known,[4] since fluorine is so electronegative that it will always oxidise copper to its +2 oxidation state.[5] Complexes of CuF such as [(Ph3P)3CuF] are, however, known and well characterised.[6]

Quick Facts Names, Identifiers ...
Copper(I) fluoride
Names
IUPAC name
Copper(I) fluoride
Systematic IUPAC name
Fluorocopper[1]
Other names
Cuprous fluoride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/Cu.FH/h;1H/q+1;/p-1 Y
    Key: BMRUOURRLCCWHB-UHFFFAOYSA-M Y
  • InChI=1/Cu.FH/h;1H/q+1;/p-1
    Key: BMRUOURRLCCWHB-REWHXWOFAQ
  • F[Cu]
  • [Cu]F
Properties
CuF
Molar mass 82.544 g·mol−1
Density 7.1 g cm−3
Structure
sphalerite
Hazards
GHS labelling:
GHS06: ToxicGHS09: Environmental hazard
Warning
NFPA 704 (fire diamond)
ThumbHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 1 mg/m3 (as Cu)[2]
REL (Recommended)
TWA 1 mg/m3 (as Cu)[2]
IDLH (Immediate danger)
TWA 100 mg/m3 (as Cu)[2]
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).
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Synthesis and reactivity

Unlike other copper(I) halides like copper(I) chloride, copper(I) fluoride tends to disproportionate into copper(II) fluoride and copper in a one-to-one ratio at ambient conditions, unless it is stabilised through complexation as in the example of [Cu(N2)F].[7]

2CuF → Cu + CuF2

See also

References

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