:Copper(I) fluoride

{{Chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 477000666

| ImageFile =

| ImageSize =

| ImageName =

| IUPACName = Copper(I) fluoride

| SystematicName = Fluorocopper{{Cite web|title = Copper Monofluoride - PubChem Public Chemical Database|url = https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=3084153&loc=ec_rcs|work = The PubChem Project|location = USA|publisher = National Center for Biotechnology Information}}

| OtherNames = Cuprous fluoride

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|changed|??}}

| CASNo = 13478-41-6

| PubChem = 3084153

| ChemSpiderID = 2341261

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

| SMILES = F[Cu]

| SMILES2 = [Cu]F

| StdInChI = 1S/Cu.FH/h;1H/q+1;/p-1

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

| InChI = 1/Cu.FH/h;1H/q+1;/p-1

| StdInChIKey = BMRUOURRLCCWHB-UHFFFAOYSA-M

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

| InChIKey = BMRUOURRLCCWHB-REWHXWOFAQ

}}

|Section2={{Chembox Properties

| Cu=1 | F=1

| Density = 7.1 g cm⁻³

}}

|Section3={{Chembox Structure

| CrystalStruct = sphalerite

}}

|Section4 = {{Chembox Hazards

|NFPA-H = 3

|NFPA-F = 0

|NFPA-R = 0

| GHSPictograms = {{GHS06}}{{GHS09}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|}}

| PPhrases = {{P-phrases|}}

| PEL = TWA 1 mg/m³ (as Cu){{PGCH|0150}}

| REL = TWA 1 mg/m³ (as Cu)

| IDLH = TWA 100 mg/m³ (as Cu)

}}

| Section8 = {{Chembox Related

| Related_ref =

| OtherAnions =Copper(I) chloride
Copper(I) bromide
Copper(I) iodide

| OtherCations =Silver(I) fluoride
Gold(I) fluoride

| OtherFunction =

| OtherFunction_label =

| OtherCompounds =Copper(II) fluoride

}}

}}

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.{{ cite journal | journal = Z. anorg. allg. Chem. | volume = 210 | issue = 3 | pages = 269–272 | year = 1933 | title = Kristallstrukturen von Fluoriden. II. HgF, HgF₂, CuF und CuF₂ | first1 = F. | last1 = Ebert | first2 = H. | last2 = Woitinek | doi = 10.1002/zaac.19332100307 }} Modern textbooks state that CuF is not known,{{Housecroft3rd|pages=737–738}} since fluorine is so electronegative that it will always oxidise copper to its +2 oxidation state.{{Greenwood&Earnshaw2nd|pages=1183–1185}} Complexes of CuF such as [(Ph₃P)₃CuF] are, however, known and well characterised.{{ cite journal | journal = Inorg. Chim. Acta | volume = 52 | year = 1981 | pages = 153–159 | title = Coordination Stabilised Copper(I) Fluoride. Crystal and Molecular Structure of Fluorotris(triphenylphosphine)copper(I)·Ethanol (1/2), Cu(PPh₃)₃F·2EtOH | first1 = D. J. | last1 = Gulliver | first2 = W. | last2 = Levason | first3 = M. | last3 = Webster | doi = 10.1016/S0020-1693(00)88590-4 }}