Europium(III) nitrate
{{chembox
| Verifiedfields =
| Watchedfields =
| verifiedrevid =
| Name = Europium(III) nitrate
| ImageFile = Europium nitrate.jpg
| IUPACName = Europium trinitrate
|Section1={{Chembox Identifiers
| CASNo = 10138-01-9
| CASNo_Comment = (anhydrous)
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo2 = 10031-53-5
| CASNo2_Comment = (hexahydrate)
| CASNo2_Ref = {{cascite|correct|CAS}}
| PubChem = 54604362
| PubChem_Comment = (anhydrous)
| PubChem2 = 202256
| PubChem2_Comment = (hexahydrate)
| ChemSpiderID = 23353
| ChemSpiderID_Comment = (anhydrous)
| ChemSpiderID2 = 175150
| ChemSpiderID2_Comment = (hexahydrate)
| InChI=1S/Eu.3NO3.6H2O/c;3*2-1(3)4;;;;;;/h;;;;6*1H2/q+3;3*-1;;;;;;
| InChIKey = JVYYYCWKSSSCEI-UHFFFAOYSA-N
| SMILES = [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Eu+3]
}}
|Section2={{Chembox Properties
| Formula = Eu(NO3)3
| MolarMass = 337.985 g/mol
446.081 g/mol (hexahydrate)
| Solubility = Soluble
| MeltingPt_notes = (hexahydrate) decomposes
}}
|Section4={{Chembox Structure
| Coordination =
| CrystalStruct =
| SpaceGroup =
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|Section6={{Chembox Hazards
| GHSPictograms = {{GHS03}}{{GHS07}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|272|315|319|335}}
| PPhrases = {{P-phrases|210|220|221|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|370+378|403+233|405|501}}
}}
|Section8={{Chembox Related
| OtherAnions = Europium(III) phosphate
Europium(III) arsenate
| OtherCations = Samarium(III) nitrate
Gadolinium(III) nitrate
| OtherCompounds = Europium(II) nitrate
Europium(III) oxide
}}
}}
File:Europium nitrate UV comparison.jpg
Europium(III) nitrate is an inorganic compound with the formula {{chem2|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.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.
: Eu2O3 + 6 HNO3 → 2 Eu(NO3)3 + 3 H2O
Structure
Like all trinitrates of the lanthanides, dilute (<0.01 M) solutions of consists of the aquo complex {{chem2|[Eu(H2O)_{x}](3+)}} where x = 8 or 9. At higher concentrations, the binding of nitrate to Eu is observed.{{cite journal |doi=10.1016/j.molliq.2020.115005 |title=Structure of lanthanide nitrates in solution and in the solid state: DFT modelling of hydration effects |date=2021 |last1=Yatsenko |first1=Alexandr V. |last2=Gloriozov |first2=Igor P. |last3=Zhokhova |first3=Nelly I. |last4=Paseshnichenko |first4=Ksenia A. |last5=Aslanov |first5=Leonid A. |last6=Ustynyuk |first6=Yuri A. |journal=Journal of Molecular Liquids |volume=323 }}
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.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.