Rhenium heptafluoride

Rhenium heptafluoride
Names
	IUPAC name rhenium heptafluoride, heptafluoridorhenium
Identifiers
CAS Number	17029-21-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	26323924 ;
PubChem CID	123369;
UNII	H54U6B0W52 ;
CompTox Dashboard (EPA)	DTXSID50168826 ;
	InChI InChI=1S/7FH.Re/h71H;/q;;;;;;;+7/p-7 Key: HFHBKXWKPQUYIA-UHFFFAOYSA-G ; InChI=1/7FH.Re/h71H;/q;;;;;;;+7/p-7/rF7Re/c1-8(2,3,4,5,6)7 Key: HFHBKXWKPQUYIA-KLJGHBABAK;
	SMILES F[Re](F)(F)(F)(F)(F)F;
Properties
Chemical formula	ReF7
Molar mass	319.196 g/mol
Appearance	Bright yellow crystalline solid
Density	4.3 g/cm3
Melting point	48.3 °C (118.9 °F; 321.4 K)
Boiling point	73.72 °C (164.70 °F; 346.87 K)
Solubility in water	Reacts
Vapor pressure	13.41 kPa
Structure
Crystal structure	triclinic, aP16
Space group	P1 (No. 2)
Thermochemistry
Enthalpy of fusion (ΔfH⦵fus)	7.53 kJ/mol
Enthalpy of vaporization (ΔfHvap)	30.77 kJ/mol
Related compounds
Related compounds	Osmium heptafluoride
	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

Rhenium heptafluoride is the compound with the formula ReF₇. It is a yellow low melting solid and is the only thermally stable metal heptafluoride. It has a distorted pentagonal bipyramidal structure similar to IF₇, which was confirmed by neutron diffraction at 1.5 K. The structure is non-rigid, as evidenced by electron diffraction studies.