Lutetium(III) oxide

Lutetium(III) oxide
Names
	Other names Lutetium oxide, Lutetium sesquioxide
Identifiers
CAS Number	12032-20-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	140183;
ECHA InfoCard	100.031.591
EC Number	234-764-3;
PubChem CID	159406;
CompTox Dashboard (EPA)	DTXSID60894260 ;
	InChI InChI=1S/2Lu.3O/q2+3;3-2 Key: UGBIHFMRUDAMBY-UHFFFAOYSA-N;
	SMILES [Lu+3].[O-2].[O-2].[Lu+3].[O-2];
Properties
Chemical formula	Lu2O3
Molar mass	397.932 g/mol
Melting point	2,490 °C (4,510 °F; 2,760 K)
Boiling point	3,980 °C (7,200 °F; 4,250 K)
Solubility in other solvents	Insoluble
Band gap	5.5 eV
Structure
Crystal structure	Bixbyite
Space group	Ia3 (No. 206)
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	448.9 kcal/mol
Gibbs free energy (ΔfG⦵)	427.5 kcal/mol
Related compounds
Other anions	Lutetium(III) chloride
Other cations	Scandium(III) oxide; Yttrium(III) oxide
Supplementary data page
	Lutetium(III) oxide (data page)
	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

Lutetium(III) oxide, a white solid, is a cubic compound of lutetium sometimes used in the preparation of specialty glasses. It is also called lutecia. It is a lanthanide oxide, also known as a rare earth.