Lutetium(III) nitrate

Lutetium(III) nitrate is an inorganic compound, a salt of lutetium and nitric acid with the chemical formula Lu(NO₃)₃. The compound forms colorless crystals, dissolves in water, and also forms crystalline hydrates.^[1] The compound is poisonous.^[2]

Lutetium(III) nitrate

Names
Other names Lutetium trinitrate, Lutetium nitrate
Identifiers
CAS Number	10099-67-9^Y monohydrate: 100641-16-5
3D model (JSmol)	Interactive image trihydrate: Interactive image
ChemSpider	32749148 monohydrate: 17340627
ECHA InfoCard	100.030.206
EC Number	233-241-7
PubChem CID	24920 monohydrate: 16212852 trihydrate: 132279168 hexahydrate: 37480
CompTox Dashboard (EPA)	DTXSID60890641
InChI InChI=1S/Lu.3NO3/c;3*2-1(3)4/q+3;3*-1 Key: APRNQTOXCXOSHO-UHFFFAOYSA-N trihydrate: InChI=1S/Lu.3NO3.3H2O/c;3*2-1(3)4;;;/h;;;;3*1H2/q+3;3*-1;;; Key: HKTJSOAKUURDRI-UHFFFAOYSA-N
SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Lu+3] trihydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.[Lu+3]
Properties
Chemical formula	Lu(NO3)3
Molar mass	360.98
Appearance	Colorless solid
Solubility in water	Soluble
Hazards
GHS labelling:
Signal word	Warning
Related compounds
Related compounds	Terbium(III) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Dissolving lutetium oxide in nitric acid:

${\displaystyle {\mathsf {Lu_{2}O_{3}+6HNO_{3}\ {\xrightarrow {90^{o}C}}\ 2Lu(NO_{3})_{3}+3H_{2}O}}}$ 

To obtain anhydrous nitrate, the powdered metal is added to nitrogen dioxide dissolved in ethyl acetate:

${\displaystyle {\mathsf {Lu+3N_{2}O_{4}\ {\xrightarrow {77^{o}C}}\ Lu(NO_{3})_{3}+3NO}}}$ 

Physical properties

Lutetium(III) nitrate forms colorless hygroscopic crystals.

Soluble in water and ethanol.

Forms crystalline hydrates of the composition Lu(NO₃)₃•nH₂O, where n = 3, 4, 5, 6.^[3]

Chemical properties

The hydrated lutetium nitrate thermally decomposes to form LuONO₃ and decomposes to lutetium oxide upon further heating.^[4]

The compound forms ammonium hexafluoroluthenate with ammonium fluoride:

${\displaystyle {\mathsf {Lu(NO_{3})_{3}+6NH_{4}F\ \xrightarrow {} \ (NH_{4})_{3}[LuF_{6}]\downarrow +3NH_{4}NO_{3}}}}$ 

Applications

Lutetium(III) nitrate is used to obtain metallic lutetium and also as a chemical reagent.

It is used as a component of materials for the production of laser crystals.

References

1. Edelmann, Frank T.; Herrmann, Wolfgang A. (14 May 2014). Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 6, 1997: Volume 6: Lanthanides and Actinides. Georg Thieme Verlag. p. 23. ISBN 978-3-13-179221-1. Retrieved 19 August 2021.
2. Sr, Richard J. Lewis (13 June 2008). Hazardous Chemicals Desk Reference. John Wiley & Sons. p. 847. ISBN 978-0-470-18024-2. Retrieved 19 August 2021.
3. "Lutetium(III) nitrate hydrate". Sigma Aldrich. Retrieved 19 August 2021.
4. Melnikov, P.; Arkhangelsky, I. V.; Nascimento, V. A.; de Oliveira, L. C. S.; Guimaraes, W. R.; Zanoni, L. Z. (February 2018). "Thermal decomposition of lutetium nitrate trihydrate Lu(NO3)3·3H2O". Journal of Thermal Analysis and Calorimetry. 131 (2): 1269–1276. doi:10.1007/s10973-017-6644-2. S2CID 102784333.