Plutonium(IV) iodate

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| OtherNames = Plutonium tetraiodate

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| CASNo = 13778-14-8

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

| StdInChIKey = KZCPVUXVUIMYAF-UHFFFAOYSA-J

| SMILES = [O-]I(=O)=O.[O-]I(=O)=O.[O-]I(=O)=O.[O-]I(=O)=O.[Pu+4]

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| Section2 = {{Chembox Properties

| Formula = Pu(IO₃)₄

| MolarMass = 943.61

| Appearance = Green to brown transition depending on crystal angleTravis Henry Bray. [https://etd.auburn.edu/handle/10415/1153?show=full Crossroads and Terminations in Transuranium Chemistry]. Auburn University, 2008.

| Density = 6.074 g·cm⁻³（−80 °C）

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Plutonium(IV) iodate is an inorganic compound with the chemical formula Pu(IO₃)₄, it is a salt which decomposes into plutonium(IV) oxide above 540 °C. It can be generated in the reaction of plutonium(IV) nitrate and iodic acid, but this method cannot obtain a pure product;Dawson, J. K.; Elliott, R. M. [https://www.osti.gov/servlets/purl/4361681 The thermogravimetry of some plutonium compounds]. Atomic Energy Research Estab. (Gt. Brit.), 1957. Another preparation method is the reaction of plutonium(IV) nitrate or plutonium(IV) chloride with potassium iodate and dilute nitric acid.{{Cite journal |last=Zolotov |first=Yu. A. |date=Oct 2006 |title=News in Zhurnal Analiticheskoi Khimii |url=http://dx.doi.org/10.1134/s1061934806100017 |journal=Journal of Analytical Chemistry |volume=61 |issue=10 |pages=935 |doi=10.1134/s1061934806100017 |issn=1061-9348}} It can crystallize in the tetragonal crystal system with space group P4₂/n.{{Cite journal |last1=Bray |first1=Travis H. |last2=Ling |first2=Jie |last3=Choi |first3=Eun Sang |last4=Brooks |first4=James S. |last5=Beitz |first5=James V. |last6=Sykora |first6=Richard E. |last7=Haire |first7=Richard G. |last8=Stanbury |first8=David M. |last9=Albrecht-Schmitt |first9=Thomas E. |date=2007-04-30 |title=Critical Role of Water Content in the Formation and Reactivity of Uranium, Neptunium, and Plutonium Iodates under Hydrothermal Conditions: Implications for the Oxidative Dissolution of Spent Nuclear Fuel |url=https://pubs.acs.org/doi/10.1021/ic070170d |journal=Inorganic Chemistry |language=en |volume=46 |issue=9 |pages=3663–3668 |doi=10.1021/ic070170d |pmid=17397146 |issn=0020-1669}}