Lutetium(III) fluoride

Lutetium(III) fluoride is an inorganic compound with a chemical formula LuF₃.

Lutetium(III) fluoride

Names
Other names lutetium trifluoride
Identifiers
CAS Number	13760-81-1 Y
3D model (JSmol)	Interactive image
ChemSpider	75534
ECHA InfoCard	100.033.945
EC Number	237-355-8
PubChem CID	83712
UNII	I36LOL46B6 Y
CompTox Dashboard (EPA)	DTXSID8065614
InChI InChI=1S/3FH.Lu/h3*1H;/q;;;+3/p-3 Key: VIHLFTMKXFWYAS-UHFFFAOYSA-K
SMILES F[Lu](F)F
Properties
Chemical formula	LuF3
Molar mass	231.97g/mol[1]
Appearance	white powder[1]
Density	8.29 g/cm3[1]
Melting point	1,184[2] °C (2,163 °F; 1,457 K)
Boiling point	2200°C[1]
Solubility in water	n/a[1]
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H315, H319, H331, H335
Precautionary statements	P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P312, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P403+P233, P405, P501
Related compounds
Other anions	Lutetium(III) chloride Lutetium(III) bromide
Other cations	Scandium(III) fluoride Yttrium(III) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Production

Lutetium(III) fluoride can be produced by reacting lutetium oxide with hydrogen fluoride, or reacting lutetium chloride and hydrofluoric acid:^[3]

Lu₂O₃ + 6 HF → 2 LuF₃ + 3 H₂O

LuCl₃ + 3 HF → LuF₃ + 3 HCl

It can also be produced by reacting lutetium sulfide and hydrofluoric acid:^[4]

3 Lu
₂S
₃+ 20 HF + (2 + 2x) H
₂O → 2 (H
₃O)Lu
₃F
₁₀·xH
₂O↓ + 9 H
₂S↑ (x = 0.9)

(H₃O)Lu₃F₁₀ → 3 LuF₃ + HF↑ + H₂O↑

Lutetium oxide and nitrogen trifluoride react at 240 °C to produce LuOF. A second step happens below 460 °C to produce LuF₃.^[5]