Erbium(III) selenate

erbium(III) selenate
Identifiers
CAS Number	anhydrous: 20148-60-1 ; octahydrate: 26299-44-5 ;
3D model (JSmol)	anhydrous: Interactive image; octahydrate: Interactive image;
PubChem CID	anhydrous: 154726256; octahydrate: 154704137;
	InChI InChI=1S/2Er.3H2O4Se/c;;31-5(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;;31-5(2,3)4;;;;;;;;/h;;3(H2,1,2,3,4);81H2/q2*+3;;;;;;;;;;;/p-6 Key: XXAGZLDPUWOOJR-UHFFFAOYSA-H;
	SMILES 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
Chemical formula	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). Infobox references

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

^ ^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.
^ 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)
^ 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.
^ "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.

[Ina-1] 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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