Europium(III) carbonate

Europium(III) carbonate
Identifiers
CAS Number	5895-48-7 anhydrous ; 13265-19-5 trihydrate ; 86546-99-8 hydrate ;
3D model (JSmol)	Interactive image;
ChemSpider	144969 ;
EC Number	227-582-0;
PubChem CID	165371;
CompTox Dashboard (EPA)	DTXSID40890604 ;
	InChI InChI=1S/3CH2O3.2Eu/c32-1(3)4;;/h3(H2,2,3,4);;/q;;;2*+3/p-6 Key: MBFNJTXDYDGXDL-UHFFFAOYSA-H;
	SMILES C(=O)([O-])[O-].C(=O)([O-])[O-].C(=O)([O-])[O-].[Eu+3].[Eu+3];
Properties
Chemical formula	Eu2(CO3)3
Molar mass	483.961 g/mol
Appearance	Solid
Melting point	Decomposes
Solubility in water	Insoluble; （1.94×10-6mol/L，30℃）
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). Infobox references

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

^ ^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
^ 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.
^ 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.
^ 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.
^ Yanagihara, N.; Vemulapalli, K.; Fernando, Q. Synthesis of lanthanide carbonates using supercritical carbon dioxide. Kidorui, 1991. 18: 136-137. ISSN: 0910-2205.

[wj-1] 《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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