Europium(III) iodate

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| CASNo = 14732-18-4

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| PubChem = 44146080

| InChI=1S/Eu.3HIO3/c;3*2-1(3)4/h;3*(H,2,3,4)/q+3;;;/p-3

| InChIKey = HQQLAVIUDCPDOA-UHFFFAOYSA-K

| EC_number = 238-791-1

| SMILES = [O-]I(=O)=O.[O-]I(=O)=O.[O-]I(=O)=O.[Eu+3] }}

| Section2 = {{Chembox Properties

| Formula = Eu(IO₃)₃

| MolarMass = 676.67 g/mol

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Europium(III) iodate is an inorganic compound with the chemical formula Eu(IO₃)₃. It can be produced by hydrothermal reaction of europium(III) nitrate or europium(III) oxide and iodic acid in water at 230 °C. It can be thermally decomposed as follows:{{Cite journal |last=Ghosh |first=B. P. |last2=Nag |first2=K. |date=Jul 1985 |title=Thermal and dielectric properties of rare earth iodates |url=http://dx.doi.org/10.1007/bf00556063 |journal=Journal of Materials Science |volume=20 |issue=7 |pages=2335–2344 |doi=10.1007/bf00556063 |issn=0022-2461}}

:{{chem2|7 Eu(IO3)3 → Eu5(IO6)3 + Eu2O3 + 9 I2 + 21 O2}}

It reacts hydrothermally with iodine pentoxide and molybdenum trioxide at 200 °C to obtain Eu(MoO₂)(IO₃)₄(OH).{{Cite journal |last=Shehee |first=Thomas C. |last2=Sykora |first2=Richard E. |last3=Ok |first3=Kang M. |last4=Halasyamani |first4=P. Shiv |last5=Albrecht-Schmitt |first5=Thomas E. |date=2003-01-01 |title=Hydrothermal Preparation, Structures, and NLO Properties of the Rare Earth Molybdenyl Iodates, RE (MoO 2 )(IO 3 ) 4 (OH) [ RE = Nd, Sm, Eu] |url=https://pubs.acs.org/doi/10.1021/ic025992j |journal=Inorganic Chemistry |language=en |volume=42 |issue=2 |pages=457–462 |doi=10.1021/ic025992j |issn=0020-1669}}