Europium(III) carbonate

Europium(III) carbonate
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 227-582-0
  • InChI=1S/3CH2O3.2Eu/c3*2-1(3)4;;/h3*(H2,2,3,4);;/q;;;2*+3/p-6
    Key: MBFNJTXDYDGXDL-UHFFFAOYSA-H
  • C(=O)([O-])[O-].C(=O)([O-])[O-].C(=O)([O-])[O-].[Eu+3].[Eu+3]
Properties
Eu2(CO3)3
Molar mass 483.961 g/mol
Appearance Solid
Melting point Decomposes
Insoluble
（1.94×10-6mol/L，30℃）[1]
Related compounds
Other cations
 Samarium(III) carbonate
Gadolinium(III) carbonate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Europium(III) carbonate is an inorganic compound with the chemical formula Eu2(CO3)3.

Preparation

Europium(III) carbonate can be obtained by mixing and heating an aqueous solution of ammonium carbonate and europium(III) chloride.[2] A saturated carbon dioxide ammonium carbonate solution (obtained from the reaction of hydrochloric acid and ammonium carbonate solution) can also precipitate europium carbonate from a europium salt solution.[3] Other preparation methods include the thermal decomposition of europium(III) acetate[4] and the reaction of a suspension of europium(III) oxide in water and supercritical carbon dioxide.[5]

Chemical properties

Europium(III) carbonate is soluble in acid and releases carbon dioxide:[1]

Eu2(CO3)3 + 6 H+ → 2 Eu+3 + 3 H2O + 3 CO2↑

Europium(III) carbonate decomposes at high temperatures to form europium(III) oxide:

Eu2(CO3)3 → Eu2O3 + 3 CO2↑

References

  1. ^ a b 《无机化学丛书》. 第七卷 钪 稀土元素. 易宪武 黄春晖 等编.科学出版社. P174. Carbonates. ISBN 978-7-03-030574-9
  2. ^ R.G. Charles (Jul 1965). "Rare-earth carbonates prepared by homogeneous precipitation". Journal of Inorganic and Nuclear Chemistry. 27 (7): 1489–1493. doi:10.1016/0022-1902(65)80008-2. Archived from the original on 2018-06-12. Retrieved 2020-04-23.
  3. ^ Perkovskaya, Yu. B.; Anoshina, N. P.; Sukhanova, I. M. Rare earth carbonates. Metody Polucheniya Khimicheskikh Reaktivov i Preparatov, 1967. 16: 104-109. ISSN: 0539-5143.
  4. ^ E.L. Head (Feb 1966). "Preparation of the carbonates of the rare earths from some of their organic acid salts". Inorganic and Nuclear Chemistry Letters. 2 (2): 33–37. doi:10.1016/0020-1650(66)80087-9. Archived from the original on 2018-06-18. Retrieved 2020-04-23.
  5. ^ Yanagihara, N.; Vemulapalli, K.; Fernando, Q. Synthesis of lanthanide carbonates using supercritical carbon dioxide. Kidorui, 1991. 18: 136-137. ISSN: 0910-2205.

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