Dysprosium(III) oxalate

Last updated
Dysprosium(III) oxalate
Dysprosium oxalate.svg
Names
IUPAC name
Dysprosium(III) oxalate
Other names
  • Didysprosium trioxalate
  • Dysprosium sesquioxalate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.011.604 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 212-763-9
  • decahydrate:677-838-4
PubChem CID
  • InChI=1S/3C2H2O4.2Dy/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6
    Key: KACTUDRDWYCYMT-UHFFFAOYSA-H
  • decahydrate:InChI=1S/3C2H2O4.2Dy.10H2O/c3*3-1(4)2(5)6;;;;;;;;;;;;/h3*(H,3,4)(H,5,6);;;10*1H2/q;;;2*+3;;;;;;;;;;/p-6
    Key: ULOOLRKTTNPQEM-UHFFFAOYSA-H
  • C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].[Dy+3].[Dy+3]
  • decahydrate:C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].O.O.O.O.O.O.O.O.O.O.[Dy+3].[Dy+3]
Properties
Dy2(C2O4)3
Molar mass 589.06 g/mol
Appearancewhite powder
Melting point 40 °C (104 °F; 313 K) (decahydrate)
Hazards
GHS labelling:
GHS-pictogram-exclam.svg
Warning
H302, H312
P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, P501
Related compounds
Other cations
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Dysprosium(III) oxalate is an inorganic compound with the chemical formula Dy2(C2O4)3. It forms hydrates, with the decahydrate Dy2(C2O4)3·10H2O being commonly encountered. [1] The anhydrous form is amorphous and unstable, decomposing to dysprosium(III) oxide at 610°C. [2] It is insoluble in water. [3]

Contents

Preparation

Dysprosium(III) oxalate, as well as other lanthanide oxalates, can be prepared through "homogeneous precipitation induced by acid-catalyzed oxamic acid hydrolysis". [4] Dysprosium(III) nitrate in dilute nitric acid is mixed with an excess of oxamic acid and the mixture is heated at 40°C until all oxamic acid dissolves. [4] The temperature is then raised to 85°C and the solution is left for 7 hours, causing large crystals of dysprosium(III) oxalate to form as the oxalic acid is slowly generated. [4]

Uses

Phosphor materials

Under 364 nm UV light, dysprosium oxalate nanocrystals emit blue (480 nm), yellow (572 nm) and red (655 nm) light. [5] As a result, they are suitable for white light emitting diodes (WLEDs) and offer advantages such as high luminescence efficiency, color repeatability, and low manufacturing cost over other technologies utilizing multiple components to achieve white light. [5] They can be prepared by microwave-assisted co-precipitation using dysprosium nitrate hexahydrate, oxalic acid dihydrate, and ethylene glycol. [5]

Metal organic frameworks

Several dysprosium oxalate metal organic frameworks (MOFs) have been synthesized. [6] For example, the nine-coordinated 2D compound [Dy(C2O4)1.5(H2O)3]n·2nH2O can be prepared through a hydrothermal reaction of sodium oxalate and dysprosium(III) perchlorate hexahydrate. [6] In addition, the 3D compound {[Dy(C2O4)1.5phen]·0.5H2O}n can be prepared through a hydrothermal reaction involving dysprosium(III) nitrate pentahydrate, oxalic acid, and phen (1,10-Phenanthroline). [7] These dysprosium-based MOFs are of research interest in the field of single-molecule magnets (SMMs). [7]

References

  1. "Dysprosium(III) oxalate decahydrate, REacton , 99.9% (REO), Thermo Scientific 25 g | Buy Online | Thermo Scientific Alfa Aesar | Fisher Scientific". www.fishersci.at. Retrieved 2025-06-18.
  2. Hussein, G. A. M.; Kroenke, W. J.; Goda, B.; Miyaji, K. (1997-01-01). "Formation of dysprosium oxide from the thermal decomposition of hydrated dysprosium acetate and oxalate Thermoanalytical and microscopic studies" . Journal of Analytical and Applied Pyrolysis. 39 (1): 35–51. Bibcode:1997JAAP...39...35H. doi:10.1016/S0165-2370(96)00961-8. ISSN   0165-2370.
  3. Perry, D. L. (1995). Handbook of Inorganic Compounds. CRC Press. pp. 152–154. ISBN   978-0-8493-8671-8.
  4. 1 2 3 Uríková, Daniela Veronika; Kampitakis, Giannis; Císařová, Ivana; Alemayehu, Adam; Kloda, Matouš; Zákutná, Dominika; Lang, Kamil; Demel, Jan; Tyrpekl, Václav (2025-03-03). "Lanthanide Oxalates: From Single Crystals to 2D Functional Honeycomb Nanosheets". Inorganic Chemistry. 64 (8): 3686–3695. doi:10.1021/acs.inorgchem.4c04293. ISSN   0020-1669. PMC   11881034 . PMID   39964120.
  5. 1 2 3 Alexander, Dinu; Thomas, Kukku; Manju Gopinath, R. J.; Joy, Monu; Biju, P. R.; Unnikrishnan, N. V.; Joseph, Cyriac (2019-10-05). "Novel white light emitting dysprosium oxalate nanocrystals: Competing luminescence quenching by the features of Dy-Oxalate layered structure" . Journal of Alloys and Compounds. 804: 252–261. doi:10.1016/j.jallcom.2019.06.219. ISSN   0925-8388.
  6. 1 2 Zhang, Sheng; Ke, Hongshan; Liu, Xiangyu; Wei, Qing; Xie, Gang; Chen, Sanping (2015-10-01). "A nine-coordinated dysprosium (III) compound with an oxalate-bridged dysprosium (III) layer exhibiting two slow magnetic relaxation processes" . Chemical Communications. 51 (82): 15188–15191. doi:10.1039/C5CC05694B. ISSN   1364-548X. PMID   26327427.
  7. 1 2 Liu, Cai-Ming; Zhang, De-Qing; Zhu, Dao-Ben (2016-03-22). "A 3D MOF constructed from dysprosium (III) oxalate and capping ligands: ferromagnetic coupling and field-induced two-step magnetic relaxation" . Chemical Communications. 52 (26): 4804–4807. doi:10.1039/C6CC00498A. ISSN   1364-548X. PMID   26961387.