Samarium(III) oxalate

Last updated
Samarium(III) oxalate
Samarium(III) oxalate.svg
Names
Other names
Tris(oxalato)disamarium, Samarium oxalate,
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 221-844-8
PubChem CID
  • InChI=1S/3C2H2O4.2Sm/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6
    Key: DABIZUXUJGHLMW-UHFFFAOYSA-H
  • C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].[Sm+3].[Sm+3]
Properties
C6O12Sm2
Molar mass 564.77 g·mol−1
AppearanceYellow crystals
Insoluble
Hazards
GHS labelling:
GHS-pictogram-exclam.svg
Warning
H302, H312
P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, 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).

Samarium(III) oxalate is an inorganic compound, a salt of samarium and oxalic acid with the formula Sm2(C2O4)3. [1] The compound does not dissolve in water, forms a crystalline hydrate with yellow crystals. [2]

Contents

Synthesis

Precipitation of soluble samarium salts with oxalic acid: [3]

Also a reaction of samarium nitrate and oxalic acid in an aqueous solution:

Physical properties

Samarium(III) oxalate forms a crystalline hydrate of the composition Sm2(C2O4)3 • 10H2O with yellow crystals.

Chemical properties

Decomposes on heating: [4]

Crystalline hydrate Sm2(C2O4)3 • 10H2O decomposes stepwise. [5]

References

  1. Bulletin of the Research Council of Israel: Chemistry. Section A. Weizmann Science Press of Israel. 1959. p. 174. Retrieved 8 August 2021.
  2. "Samarium(III) oxalate hydrate ≥99.99% | Sigma-Aldrich". Sigma Aldrich . Retrieved 8 August 2021.
  3. Sanuki, Sumiko; Sugiyama, Akio; Tunekawa, Minoru; Kadomachi, Kiyotaka; Arai, Koichi (1994). "Precipitation Stripping of Samarium Oxalate from Organic Solution Containing Acid Type Extractant by Oxalic Acid". Journal of the Japan Institute of Metals. 58 (11): 1271–1278. doi: 10.2320/jinstmet1952.58.11_1271 . Retrieved 8 August 2021.
  4. Wendlandt, W. W. (1 March 1959). "Thermal Decomposition of Rare Earth Metal Oxalates" . Analytical Chemistry . 31 (3): 408–410. doi:10.1021/ac60147a024. ISSN   0003-2700 . Retrieved 8 August 2021.
  5. Hussein, G.A.M.; Buttrey, D.J.; Desanto, P.; Abd-Elgaber, A.A.; Roshdy, Heba; Myhoub, Ali Y.Z. (3 June 2003). "Formation and characterization of samarium oxide generated from different precursors" . Thermochimica Acta. 402 (1–2): 27–36. doi:10.1016/S0040-6031(02)00535-X. ISSN   0040-6031 . Retrieved 8 August 2021.