Erbium(III) selenate

erbium(III) selenate
Identifiers
3D model (JSmol)
  • 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.

References

  1. ^ a b 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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