Europium(III) nitrate is an inorganic compound with the formula . The hexahydrate is a common salt. It forms colorless hygroscopic crystals.

Preparation

The salt is usually obtained by dissolving

europium(III) oxide Europium(III) oxide (Eu2O3), is a chemical compound of europium and oxygen. It is widely used as a red or blue phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors. It is also an agent for the manufac ...

(Eu₂O₃) in

nitric acid Nitric acid is the inorganic compound with the formula . It is a highly corrosive mineral acid. The compound is colorless, but older samples tend to be yellow cast due to decomposition into oxides of nitrogen. Most commercially available nitri ...

produces europium(III) nitrate. : 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 In chemistry, metal aquo complexes are coordination compounds containing metal ions with only water as a ligand. These complexes are the predominant species in aqueous solutions of many metal salts, such as metal nitrates, sulfates, and perchlorat ...

where x = 8 or 9. At higher concentrations, the binding of nitrate to Eu is observed.

Complexes

Europium(III) nitrate reacts with anions and other Lewis bases to form complexes. For example, with 1,3,5-

trimesic acid Trimesic acid, also known as benzene-1,3,5-tricarboxylic acid, is an organic compound with the formula C6H3(CO2H)3. It is one of three isomers of benzenetricarboxylic acid. A colorless solid, trimesic acid has some commercial value as a precursor ...

, europium metal-organic framework, a coordination polymer, under

hydrothermal Hydrothermal circulation in its most general sense is the circulation of hot water (Ancient Greek ὕδωρ, ''water'',Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon. revised and augmented throughout by Sir Henry Stuart Jones. with th ...

conditions.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.

References

{{Nitrates Europium(III) compounds category:nitrates