Europium(III)_nitrate

Europium(III) nitrate

Europium(III) nitrate

Chemical compound

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.

Quick Facts Names, Identifiers ...
Europium(III) nitrate hexahydrate under fluorescent lamp (left) and UV light (right).

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

  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. [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. [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. [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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