Europium(III) nitrate

Europium(III) nitrate
Names
	IUPAC name Europium trinitrate
Identifiers
CAS Number	10138-01-9 (anhydrous) ; 10031-53-5 (hexahydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	23353 (anhydrous); 175150 (hexahydrate);
ECHA InfoCard	100.030.333
PubChem CID	54604362 (anhydrous); 202256 (hexahydrate);
CompTox Dashboard (EPA)	DTXSID80890643 ;
	InChI InChI=1S/Eu.3NO3.6H2O/c;32-1(3)4;;;;;;/h;;;;61H2/q+3;3*-1;;;;;; Key: JVYYYCWKSSSCEI-UHFFFAOYSA-N;
	SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Eu+3];
Properties
Chemical formula	Eu(NO3)3
Molar mass	337.985 g/mol; 446.081 g/mol (hexahydrate)
Melting point	65 °C (149 °F; 338 K) (hexahydrate) decomposes
Solubility in water	Soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H315, H319, H335
Precautionary statements	P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
Related compounds
Other anions	Europium(III) phosphate; Europium(III) arsenate
Other cations	Samarium(III) nitrate; Gadolinium(III) nitrate
Related compounds	Europium(II) nitrate; Europium(III) oxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Europium(III) nitrate is an inorganic compound with the formula Eu(NO₃)₃·x(H₂O). The hexahydrate is a common salt. It forms colorless hygroscopic crystals.

Preparation

The salt is usually obtained by dissolving europium(III) oxide (Eu₂O₃) in nitric acid produces europium(III) nitrate.^[2]

Eu₂O₃ + 6 HNO₃ → 2 Eu(NO₃)₃ + 3 H₂O

Structure

Like all trinitates of the lanthanides, dilute (<0.01 M) solutions of consists of the aquo complex [Eu(H₂O)_x]³⁺ where x = 8 or 9. At higher concentrations, the binding of nitrate to Eu is observed.^[3]

Complexes

Europium(III) nitrate reacts with anions and other Lewis bases to form complexes. For example, with 1,3,5-trimesic acid, europium metal-organic framework, a coordination polymer, under hydrothermal conditions.^[4]

References

^ Melnikov, P.; Arkhangelsky, I. V.; Nascimento, V. A.; De Oliveira, L. C. S.; Silva, A. F.; Zanoni, L. Z. (2017). "Thermal properties of europium nitrate hexahydrate Eu(NO3)3·6H2O" (PDF). Journal of Thermal Analysis and Calorimetry. 128 (3): 1353–1358. doi:10.1007/s10973-016-6047-9. S2CID 99674207.
^ Odent, Guy; Charetteur, Elisabeth; Duperray, Marie H. Crystallization, radiocrystallographic characterization, and infrared absorption spectra of hexahydrates and pentahydrates of nitrates and lanthanides. Revue de Chimie Minerale, 1975. 12 (1): 17-23.
^ Yatsenko, Alexandr V.; Gloriozov, Igor P.; Zhokhova, Nelly I.; Paseshnichenko, Ksenia A.; Aslanov, Leonid A.; Ustynyuk, Yuri A. (2021). "Structure of lanthanide nitrates in solution and in the solid state: DFT modelling of hydration effects". Journal of Molecular Liquids. 323. doi:10.1016/j.molliq.2020.115005.
^ Habimana, Fabien; Huo, Yanxia; Jiang, Sai; Ji, Shengfu. Synthesis of europium metal-organic framework (Eu-MOF) and its performance in adsorptive desulfurization. Adsorption, 2016. 22 (8): 1147-1155. DOI:10.1007/s10450-016-9838-1.

[1] Melnikov, P.; Arkhangelsky, I. V.; Nascimento, V. A.; De Oliveira, L. C. S.; Silva, A. F.; Zanoni, L. Z. (2017). "Thermal properties of europium nitrate hexahydrate Eu(NO3)3·6H2O" (PDF). Journal of Thermal Analysis and Calorimetry. 128 (3): 1353–1358. doi:10.1007/s10973-016-6047-9. S2CID 99674207.

[2] Odent, Guy; Charetteur, Elisabeth; Duperray, Marie H. Crystallization, radiocrystallographic characterization, and infrared absorption spectra of hexahydrates and pentahydrates of nitrates and lanthanides. Revue de Chimie Minerale, 1975. 12 (1): 17-23.

[3] Yatsenko, Alexandr V.; Gloriozov, Igor P.; Zhokhova, Nelly I.; Paseshnichenko, Ksenia A.; Aslanov, Leonid A.; Ustynyuk, Yuri A. (2021). "Structure of lanthanide nitrates in solution and in the solid state: DFT modelling of hydration effects". Journal of Molecular Liquids. 323. doi:10.1016/j.molliq.2020.115005.

[4] Habimana, Fabien; Huo, Yanxia; Jiang, Sai; Ji, Shengfu. Synthesis of europium metal-organic framework (Eu-MOF) and its performance in adsorptive desulfurization. Adsorption, 2016. 22 (8): 1147-1155. DOI:10.1007/s10450-016-9838-1.

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