rhenium heptafluoride

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 437422490

| ImageFile = ReF7 structure.png

| ImageSize =

| IUPACName = rhenium heptafluoride, heptafluoridorhenium

| OtherNames =

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 17029-21-9

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = H54U6B0W52

| PubChem = 123369

| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}

| ChemSpiderID = 26323924

| SMILES = F[Re](F)(F)(F)(F)(F)F

| InChI = 1/7FH.Re/h7*1H;/q;;;;;;;+7/p-7/rF7Re/c1-8(2,3,4,5,6)7

| InChIKey = HFHBKXWKPQUYIA-KLJGHBABAK

| StdInChI_Ref = {{stdinchicite|changed|chemspider}}

| StdInChI = 1S/7FH.Re/h7*1H;/q;;;;;;;+7/p-7

| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}

| StdInChIKey = HFHBKXWKPQUYIA-UHFFFAOYSA-G

}}

|Section2={{Chembox Properties

| Formula = ReF₇

| MolarMass = 319.196 g/mol

| Appearance = Bright yellow crystalline solid

| Density = 4.3 g/cm³

| MeltingPtC = 48.3

| BoilingPtC = 73.72

| Solubility = Reacts

| VaporPressure = 13.41 kPa{{cite journal |journal= Journal of Inorganic and Nuclear Chemistry|author1=J.G.Malm |author2=H.Selig |title=The vapour-pressures and other properties of ReF6 and ReF7 |date=1961 |volume=20 |issue=3 |pages=189–197 |doi=10.1016/0022-1902(61)80267-4 |language=English}}

}}

|Section3={{Chembox Structure

| CrystalStruct = triclinic, aP16

| SpaceGroup = P{{overline|1}} (No. 2)

}}

| Section4 = {{Chembox Thermochemistry

| DeltaHfus = 7.53 kJ/mol

| DeltaHvap = 30.77 kJ/mol

}}

|Section6={{Chembox Related

| OtherCompounds = Osmium heptafluoride

}}

}}

Rhenium heptafluoride is the compound with the formula ReF₇. It is a yellow low melting solid and is the only thermally stable metal heptafluoride.{{Greenwood&Earnshaw}} It has a distorted pentagonal bipyramidal structure similar to IF₇, which was confirmed by neutron diffraction at 1.5 K.{{cite journal | doi = 10.1126/science.263.5151.1265 | title = Crystal and Molecular Structures of Rhenium Heptafluoride | year = 1994 |author1=Vogt T. |author2=Fitch A. N. |author3=Cockcroft J. K. | journal = Science | volume = 263 | pages = 1265–7 | pmid = 17817431 | issue = 5151| bibcode = 1994Sci...263.1265V | s2cid = 20013073 }} The structure is non-rigid, as evidenced by electron diffraction studies.{{cite journal | doi = 10.1063/1.1674318 | title = Electron Diffraction Study of Rhenium Fluorides. II. Structure, Pseudorotation, and Anharmonic Coupling of Modes in ReF7 | year = 1970 |author1=Jacob, E. Jean |author2=Bartell, L.S.J. | journal = The Journal of Chemical Physics | volume = 53 | pages = 2235 | issue = 6| bibcode = 1970JChPh..53.2235J | url = https://deepblue.lib.umich.edu/bitstream/2027.42/70852/2/JCPSA6-53-6-2235-1.pdf | hdl = 2027.42/70852 | hdl-access = free }}