Cerium(III) selenate

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| ImageFile =File:2.svgFile:Ce3+.svg
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| Section1 = {{Chembox Identifiers

| CASNo = 13454-73-4

| CASNo_Ref = {{cascite|correct|CAS}}

| index_label= anhydrous

| CASNo2 = 23653-34-1

| CASNo2_Ref = {{cascite|correct|CAS}}

| index2_label = pentahydrate

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| PubChem = 20432114

| StdInChI=1S/2Ce.3H2O4Se/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6

| StdInChIKey = IRJPWWVGQHXWSR-UHFFFAOYSA-H

| SMILES = [O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[Ce+3].[Ce+3]

| SMILES2 = [O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[O-][Se](=O)(=O)[O-].[Ce+3].[Ce+3].O.O.O.O.O

}}

| Section2 = {{Chembox Properties

| Formula = Ce₂(SeO₄)₃

| MolarMass = 709.121

| Appearance =

| Density = 4.456g/cm³ (octahydrate)化学化工物性数据手册（无机卷）.刘光启 等主编.化学工业出版社.16.2 硒酸盐.P₅₆₉

| Solubility = 39.5g(0 °C)
2.51(100 °C)

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| Section3 = {{Chembox Structure

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| Section7 = {{Chembox Hazards

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| Section8 = {{Chembox Related

| OtherAnions = cerium(III) sulfate

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Cerium(III) selenate is an inorganic compound with the chemical formula {{Chem2|Ce2(SeO4)3}}. It can be obtained by reacting selenic acid and cerium(III) carbonate, and the solvent is evaporated to precipitate crystals.{{Citation |last=Wickleder |first=Mathias S. |title=Oxo-Selenates of rare earth elements |date=2005 |url=http://dx.doi.org/10.1016/s0168-1273(05)35002-1 |series=Handbook on the Physics and Chemistry of Rare Earths |volume=35 |pages=45–105 |access-date=2023-12-05 |publisher=Elsevier|doi=10.1016/s0168-1273(05)35002-1 |isbn=978-0-444-52028-9 |url-access=subscription }} 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.{{Cite journal |last1=OVANESYAN |first1=S. M. |last2=ISKHAKOVA |first2=L. D. |last3=TRUNOV |first3=V. K. |date=1987-06-30 |title=ChemInform Abstract: Synthesis and Crystal Structure of CsLn(SeO4)2·4 H2O. |url=http://dx.doi.org/10.1002/chin.198726005 |journal=ChemInform |volume=18 |issue=26 |doi=10.1002/chin.198726005 |issn=0931-7597|url-access=subscription }}