Europium (III) nitrate
Crystal structure | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No drawing available | |||||||||||||
General | |||||||||||||
Surname | Europium (III) nitrate | ||||||||||||
other names |
Europium trinitrate |
||||||||||||
Ratio formula | Eu (NO 3 ) 3 | ||||||||||||
Brief description |
colorless solid (pentahydrate and hexahydrate) |
||||||||||||
External identifiers / databases | |||||||||||||
|
|||||||||||||
properties | |||||||||||||
Molar mass | |||||||||||||
Physical state |
firmly |
||||||||||||
density |
3.35 g cm −3 |
||||||||||||
Melting point |
317 ° C ( decomposition ) |
||||||||||||
solubility |
soluble in water (hexahydrate) |
||||||||||||
safety instructions | |||||||||||||
|
|||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Europium (III) nitrate (Eu [NO 3 ] 3 ) is an inorganic salt made from europium and nitric acid . The hexa hydrate (Eu [NO 3 ] 3 ∙ 6H 2 O) is the most common form which colorless hygroscopic crystals forms.
Extraction and presentation
Europium sesquioxide (Eu 2 O 3 ) is dissolved in nitric acid and then concentrated to dryness.
properties
The anhydrous europium (III) nitrate crystallizes in the Tb [NO 3 ] 3 type, monoclinically in the space group P 2 1 / c (space group no. 14) with the lattice parameters a = 1109.4 (1), b = 618 , 50 (8), c = 975.2 (1) pm , β = 93.034 (9) ° with four formula units per unit cell . Europium (III) nitrate begins to decompose at 317 ° C , which takes place in three steps to form europium sesquioxide.
First step (301–362 ° C):
Second step (428–461 ° C):
Third step (575–600 ° C):
The hexahydrate turns into a clear liquid at around 65 ° C (similar to other nitrate hexahydrates). This liquid begins to boil at around 112 ° C and immediately smells of gaseous nitric acid.
use
Europium (III) nitrate can react with 1,3,5-tricarboxybenzene (trimesic acid, TMA) and forms a europium metal-organic framework (Eu-MOF). Europium (III) nitrate can also be used to obtain EuPO 4 ∙ nH 2 O nanotubes . It is also used in the synthesis of light-emitting nanomaterials.
Individual evidence
- ↑ a b c Datasheet Europium (III) nitrate pentahydrate, 99.9% trace metals basis from Sigma-Aldrich , accessed on June 6, 2020 ( PDF ).
- ^ A b Robert A. Lewis: Hawley's Condensed Chemical Dictionary . John Wiley & Sons, 2016, ISBN 978-1-119-26784-3 , pp. 601 ( limited preview in Google Book search).
- ↑ a b Christina Heinrichs: Synthesis and characterization of anhydrous rare earth metal nitrates, acetates and oxyacetates . 1st edition. Publishing house Dr. Hut, Munich 2013, p. 1-243 .
- ↑ a b B. N. Ivanov-Emin, Yu N. Medvedev: The thermal decomposition of anhydrous lanthanide nitrates . In: Russian Journal of Inorganic Chemistry . tape 35 , no. 2 , 1990, p. 168-170 .
- ↑ Odent, Guy; Charetteur, Elisabeth; Duperray, Marie H .: Crystallization, radiocrystallographic characterization, and infrared absorption spectra of hexahydrates and pentahydrates of nitrates and lanthanides . In: Revue de Chimie Minerale . tape 12 , no. 1 , 1975, p. 17-23 .
- ↑ P. Melnikov, IV Arkhangelsky u. a .: Thermal properties of europium nitrate hexahydrate Eu (NO3) 3-6H2O. In: Journal of Thermal Analysis and Calorimetry. 128, 2017, p. 1353, doi : 10.1007 / s10973-016-6047-9 .
- ↑ Habimana, Fabien; Huo, Yanxia; Jiang, Sai; Ji, Shengfu: Synthesis of europium metal-organic framework (Eu-MOF) and its performance in adsorptive desulfurization . In: Adsorption . tape 22 , no. 8 , 2016, p. 1147-1155 , doi : 10.1007 / s10450-016-9838-1 .
- ↑ Tanase, Stefania; Mittelmeijer-Hazeleger, Marjo C .; Rothenberg, Gadi; Mathoniere, Corine; Jubera, Veronique; Smits, Jan MM; de Gelder, Rene: A facile building-block synthesis of multifunctional lanthanide MOFs . In: Journal of Materials Chemistry . tape 21 , no. 39 , 2011, ISSN 0959-9428 , p. 15544-15551 , doi : 10.1039 / c1jm12789f .
- ↑ Chitta Ranjan Patra, Gabashvili Alexandra, Sujata Patra, David Solomon Jacob, Aharon thoughts, Asher Landau, Yossi Gofer: Microwave approach for the synthesis of rhabdophane-typelanthanide orthophosphate (Ln = La, Ce, Nd, Sm, Eu, Gdand Tb) nanorods under solvothermal conditions . In: New J. Chem. Band 29 , 2005, pp. 733-739 , doi : 10.1039 / b415693e .
- ↑ Data sheet Europium (III) nitrate hexahydrate, REacton®, 99.9% (REO) from AlfaAesar, accessed on June 6, 2020 ( PDF )(JavaScript required) .