Praseodymium(III) iodate

Praseodymium(III) iodate
Identifiers
CAS Number	14945-15-4 anhydrous ; 56491-63-5 monohydrate ; 56491-62-4 pentahydrate ;
3D model (JSmol)	Interactive image;
EC Number	239-021-7;
PubChem CID	21149368;
CompTox Dashboard (EPA)	DTXSID80164270;
	InChI InChI=1S/3HIO3.Pr/c32-1(3)4;/h3(H,2,3,4);/q;;;+3/p-3 Key: CIFGBMZYGQOOKC-UHFFFAOYSA-K;
	SMILES [O-]I(=O)=O.[O-]I(=O)=O.[O-]I(=O)=O.[Pr+3];
Properties
Chemical formula	Pr(IO3)3
Molar mass	665.62
Density	4.89 g·cm-3 (pentahydrate)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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Praseodymium(III) iodate is an inorganic compound with the chemical formula Pr(IO₃)₃.

Preparation

Praseodymium(III) iodate can be obtained by reacting praseodymium(III) nitrate and potassium iodate in a hot aqueous solution:^[2]

Pr(NO₃)₃ + 3 KIO₃ → Pr(IO₃)₃ + 3 KNO₃

Properties

Praseodymium(III) iodate can be thermally decomposed as follows:^[3]

7 Pr(IO₃)₃ → Pr₅(IO₆)₃ + Pr₂O₃ + 9 I₂ + 21 O₂

References

^ Abrahams, S.C.; Bernstein, J.L.; Nassau, K. (Jan 1976). "Transition metal iodates. VII. Crystallographic and nonlinear optic survey of the 4f-iodates". Journal of Solid State Chemistry. 16 (1–2): 173–184. Bibcode:1976JSSCh..16..173A. doi:10.1016/0022-4596(76)90020-7.
^ Roy, Ajoy; Ghosh, Bijoy Prosad; Nag, K. (Jul 1981). "Phase transition behavior of rare earth iodates". Thermochimica Acta. 47 (1): 105–108. doi:10.1016/0040-6031(81)85012-5.
^ Ghosh, B. P.; Nag, K. (Jul 1985). "Thermal and dielectric properties of rare earth iodates". Journal of Materials Science. 20 (7): 2335–2344. Bibcode:1985JMatS..20.2335G. doi:10.1007/bf00556063. ISSN 0022-2461.

[1] Abrahams, S.C.; Bernstein, J.L.; Nassau, K. (Jan 1976). "Transition metal iodates. VII. Crystallographic and nonlinear optic survey of the 4f-iodates". Journal of Solid State Chemistry. 16 (1–2): 173–184. Bibcode:1976JSSCh..16..173A. doi:10.1016/0022-4596(76)90020-7.

[2] Roy, Ajoy; Ghosh, Bijoy Prosad; Nag, K. (Jul 1981). "Phase transition behavior of rare earth iodates". Thermochimica Acta. 47 (1): 105–108. doi:10.1016/0040-6031(81)85012-5.

[3] Ghosh, B. P.; Nag, K. (Jul 1985). "Thermal and dielectric properties of rare earth iodates". Journal of Materials Science. 20 (7): 2335–2344. Bibcode:1985JMatS..20.2335G. doi:10.1007/bf00556063. ISSN 0022-2461.

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