Rhenium pentafluoride
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| ImageFile =
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| IUPACName =
| OtherNames = Rhenium(V) fluoride
| Section1 = {{Chembox Identifiers
| CASNo = 30937-52-1
| PubChem = 15796911
| ChemSpiderID =
| EINECS =
| DTXSID =
| SMILES = F[Re](F)(F)(F)F
| StdInChI = 1S/5FH.Re/h5*1H;/q;;;;;+5/p-5
| StdInChIKey = UKUWGTWCIFEMQK-UHFFFAOYSA-I
}}
| Section2 = {{Chembox Properties
| Re=1|F=5
| Appearance = yellow-green crystals
| Density = g/cm3
| Solubility = reacts with water
| MeltingPtC = 48
| BoilingPtC = 221.3
}}
| Section4 = {{Chembox Structure
| CrystalStruct = orthorhombic
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| Section7 = {{Chembox Hazards
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|Section6={{Chembox Related
| OtherCompounds = Osmium pentafluoride
}}
}}
Rhenium pentafluoride is a binary inorganic compound of rhenium and fluorine with the chemical formula {{chem2|ReF5}}.{{cite book |last1=Gutmann |first1=Viktor |title=Halogen Chemistry |date=2 December 2012 |publisher=Elsevier |isbn=978-0-323-14847-4 |page=192 |url=https://books.google.com/books?id=q0j8Imd8yQsC&dq=Rhenium+pentafluoride&pg=PA192 |access-date=6 April 2023 |language=en}} This is a salt of rhenium and hydrofluoric acid.{{cite book |last1=Hawkins |first1=Donald T. |title=Binary Fluorides: Free Molecular Structures and Force Fields A Bibliography (1957–1975) |date=6 December 2012 |publisher=Springer Science & Business Media |isbn=978-1-4684-6147-3 |page=50 |url=https://books.google.com/books?id=kOHgBwAAQBAJ&dq=Rhenium+pentafluoride&pg=PA50 |access-date=6 April 2023 |language=en}}
Synthesis
Rhenium pentafluoride can be synthesised by the reduction of rhenium hexafluoride with hydrogen, rhenium, or tungsten:
::{{chem2|2ReF6 + H2 -> 2ReF5 + 2HF}}
::{{chem2|5ReF6 + Re -> 6ReF5}}
::{{chem2|6ReF6 + W -> 6ReF5 + WF6}}
Physical properties
Rhenium pentafluoride forms yellow-green crystals{{cite book |last1=Colton |first1=Ray |title=The Chemistry of Rhenium and Technetium |date=1965 |publisher=Interscience Publishers |isbn=978-0-470-16650-5 |page=59 |url=https://books.google.com/books?id=F97QAAAAMAAJ&q=Rhenium+pentafluoride |access-date=6 April 2023 |language=en}} of orthorhombic crystal system, cell parameters a = 0.57 nm, b = 1.723 nm, c = 0.767 nm.
Rhenium pentafluoride reacts with water.
Rhenium pentafluoride is volatile. The compound consists of dimers of composition {{chem2|Re2F10}}.