Rhenium trioxide

Rhenium trioxide
Names
	IUPAC name Rhenium trioxide
	Other names Rhenia
Identifiers
CAS Number	1314-28-9 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.013.845
EC Number	215-228-8;
PubChem CID	102110;
UNII	FET0Y2C413 ;
CompTox Dashboard (EPA)	DTXSID0061662 ;
	InChI InChI=1S/3O.Re;
	SMILES O=[Re](=O)=O;
Properties
Chemical formula	ReO3
Molar mass	234.205 g/mol
Appearance	Deep red crystals
Density	6.92 g/cm3
Melting point	400 °C (752 °F; 673 K) (decomposes)
Magnetic susceptibility (χ)	+16.0·10−6 cm3/mol
Refractive index (nD)	1.68
Structure
Crystal structure	Cubic, cP4
Space group	Pm3m, No. 221
Lattice constant	a = 374.8 pm
	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 trioxide or rhenium(VI) oxide is an inorganic compound with the formula ReO₃. It is a red solid with a metallic lustre that resembles copper in appearance. It is the only stable trioxide of the Group 7 elements (Mn, Tc, Re).