Cerium(IV) selenate

Cerium(IV) selenate

Identifiers
CAS Number	anhydrous: 131362-39-5  Y tetrahydrate: 65627-67-0  Y
3D model (JSmol)	anhydrous: Interactive image tetrahydrate: Interactive image
InChI InChI=1S/Ce.2H2O4Se/c;2*1-5(2,3)4/h;2*(H2,1,2,3,4)/q+4;;/p-4 Key: KFWCNHLRVFJXRB-UHFFFAOYSA-J
SMILES anhydrous:[Ce+4].[O-][Se](=O)(=O)[O-].[O-][Se]([O-])(=O)=O tetrahydrate:[Ce+4].[O-][Se](=O)(=O)[O-].[O-][Se]([O-])(=O)=O.O.O.O.O
Properties
Chemical formula	Ce(SeO4)2
Appearance	yellow crystals [1]
Density	3.41 g·cm−3
Solubility in water	insoluble
Related compounds
Other anions	cerium(IV) sulfate
Other cations	lanthanum(III) selenate praseodymium(III) selenate thorium(IV) selenate
Related compounds	cerium(III) selenate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cerium(IV) selenate is an inorganic compound with the chemical formula Ce(SeO₄)₂.

Preparation

Cerium(IV) selenate can be obtained by reacting cerium(IV) hydroxide with hot selenic acid, and the tetrahydrate can be crystallized from the solution. ^[2]

Properties

Cerium(IV) selenate has a space group of Pbca, and its unit cell parameters are a = 9.748 Å, b = 9.174 Å, and c = 13.740 Å. ^{[1] [3]}

The tetrahydrate has orthorhombic space group Fddd with unit cell dimensions a = 27.31, b = 12.38, c = 5.736 Å. ^[2]

It hydrolyzes when exposed to water and can be reduced to trivalent cerium using hydrogen peroxide. ^[4]

References

1. Gschneidner, Karl A.; Bünzli, Jean-Claude G.; Pecharsky, Vitalij K. (2005). Handbook on the physics and chemistry of rare earths. Amsterdam: Elsevier. ISBN   978-0-444-52028-9.
2. M. A. Nabar, V. R. Ajgaonkar (1978-02-01). "Studies on selenates. III. Crystal chemical data for zirconium and cerium selenate tetrahydrates" . Journal of Applied Crystallography. 11 (1): 56–57. Bibcode:1978JApCr..11...56N. doi:10.1107/S0021889878012686. ISSN   0021-8898. Archived from the original on 2018-06-03. Retrieved 2020-04-23.
3. Iskhakova, L. D.; Kozlova, N. P.; Marugin, V. V. Crystal structure of cerium selenate (Ce(SeO₄)₂). Kristallografiya, 1990. 35 (5): 1089-1093. ISSN: 0023-4761.
4. Meyer, Julius; Schulz, Franziska (1931-01-07). "Zur Kenntnis der Ceriselenate" . Zeitschrift für anorganische und allgemeine Chemie. 195 (1): 127–128. Bibcode:1931ZAACh.195..127M. doi:10.1002/zaac.19311950114. ISSN   0863-1786.