Erbium(III) selenate

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erbium(III) selenate
2.svg Er3+.svg 3.svg Selenate Structural Formula A V2.svg
Identifiers
3D model (JSmol)
PubChem CID
  • InChI=1S/2Er.3H2O4Se/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6
    Key: MOBNMXCYOYNHIL-UHFFFAOYSA-H
  • octahydrate:InChI=1S/2Er.3H2O4Se.8H2O/c;;3*1-5(2,3)4;;;;;;;;/h;;3*(H2,1,2,3,4);8*1H2/q2*+3;;;;;;;;;;;/p-6
    Key: XXAGZLDPUWOOJR-UHFFFAOYSA-H
  • anhydrous:[O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[Er+3].[Er+3]
  • octahydrate:O.O.O.O.O.O.O.O.[O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[Er+3].[Er+3]
Properties
Er2O12Se3
Molar mass 763.419 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Erbium(III) selenate is an inorganic compound, with the chemical formula Er2(SeO4)3. It exists as an anhydrate or an octahydrate.

Preparation and properties

Monoclinic erbium(III) selenate octahydrate can be crystallized from the solution when dissolving erbium oxide in selenic acid: [1]

Er2O3 + 3 H2SeO4 + 5 H2O → Er2(SeO4)3·8H2O

Erbium(III) selenate octahydrate is first dehydrated by heating to obtain the anhydrous form, and then heated continuously to obtain erbium selenite and finally erbium(III) oxide. [1] [2]

It can crystallize with M2SeO4 in aqueous solution to form double salts, such as K3Er(SeO4)3·nH2O [3] and NH4Er(SeO4)2·3H2O, [4] etc.

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Holmium(III) selenate is an inorganic compound with the chemical formula Ho2(SeO4)3. It exists in the anhydrous form and as an octahydrate. It can be obtained by dissolving holmium(III) oxide in selenic acid solution and evaporating and crystallizing it. It co-crystallizes with other selenates in solution to obtain complex salts such as K3Ho(SeO4)3·nH2O, NH4Ho(SeO4)2·3H2O and CH3NH3Ho(SeO4)2·5H2O.

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Cerium(III) selenate is an inorganic compound with the chemical formula Ce2(SeO4)3. It can be obtained by reacting selenic acid and cerium(III) carbonate, and the solvent is evaporated to precipitate crystals. The double salt CsCe(SeO4)2·4H2O can be obtained from mixing cerium(III) selenate and cesium selenate in an aqueous solution, and then evaporating and crystallizing the solution.

Caesium selanate is an inorganic compound, with the chemical formula of Cs2SeO4. It can form colourless crystals of the orthorhombic crystal system.

References

  1. 1 2 Ina Krügermann, Mathias S. Wickleder (2004-09-01). "Crystal Structure and Thermal Behaviour of Er2(SeO4)3 · 8H2O". Zeitschrift für Naturforschung B. 59 (9): 958–962. doi:10.1515/znb-2004-0902. ISSN   1865-7117. S2CID   197635373 . Retrieved 2020-05-29.
  2. ↑ Bohumil Hajek, Nadezda Novotna, Jarmila Hradilova (Aug 1979). "Studies of thermal decompositions and infrared spectra of the rare earth selenate octahydrates Ln2(SeO4)3· 8H2O (Ln = Y,Tb,Dy,Ho,Er,Tm,Yb,Lu)". Journal of the Less Common Metals. 66 (2): 121–136. doi:10.1016/0022-5088(79)90222-4 . Retrieved 2020-05-29.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ↑ M.A. Nabar, Veena R. Naik (Jul 1998). "Studies on selenates XIII: Synthesis and crystal chemical characterisation of K3Ln(SeO4)3.nH2O". Journal of Alloys and Compounds. 275–277: 54–57. doi:10.1016/S0925-8388(98)00273-4. Archived from the original on 2018-06-28. Retrieved 2020-05-29.
  4. ↑ "Zhurnal Neorganicheskoi Khimii (Inorganic Chemistry) is 50". Russian Journal of Inorganic Chemistry. 51 (5): 844–845. May 2006. doi:10.1134/s0036023606050287. ISSN   0036-0236. S2CID   189775040.
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