Praseodymium(III) iodide

Last updated
Praseodymium(III) iodide
Unit cell of PuBr3.png
Names
Other names
Praseodymium triiodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.046 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 237-466-1
PubChem CID
  • InChI=1S/3HI.Pr/h3*1H;/q;;;+3/p-3
    Key: PVEVRIVGNKNWML-UHFFFAOYSA-K
  • I[Pr](I)I
Properties
PrI3
Molar mass 521.619 g/mol
683.75652 g/mol (nonahydrate)
Appearance hygroscopic green crystals
Density 5.8 g/cm3 [1]
Melting point 738 °C (1,360 °F; 1,011 K) [1]
Boiling point 1,380 °C (2,520 °F; 1,650 K)
213.9 g/100 mL [2]
Hazards
GHS labelling: [3]
GHS-pictogram-exclam.svg GHS-pictogram-silhouette.svg
Danger
H317, H360
P203, P261, P272, P280, P302+P352, P318, P321, P333+P313, P362+P364, P405, P501
Related compounds
Other anions
Praseodymium(III) fluoride
Praseodymium(III) chloride
Praseodymium(III) bromide
Other cations
Cerium(III) iodide
Neodymium(III) iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Praseodymium(III) iodide is an inorganic salt, consisting of the rare-earth metal praseodymium and iodine, with the chemical formula PrI3. It forms green crystals. [4] It is soluble in water. [5]

Contents

Preparation

Properties

Praseodymium(III) iodide forms green crystals, which are soluble in water. [5] It forms orthorhombic crystals which are hygroscopic. [1] It crystallizes in the PuBr3 type [6] [7] with space group Cmcm (No. 63) with a = 4.3281(6) Å, b = 14.003(6) Å and c = 9.988(3) Å. [8] It decomposes through an intermediate phase 2 PrI3·PrOI to a mixture of praseodymium oxyiodide and praseodymium oxide (5 PrOI·Pr2O3). [9]

Reactions

Pr2O3 + 6 HI + 15H2O → 2 PrI3·9H2O
2 PrI3 + Pr → 3 PrI2

See also

References

  1. 1 2 3 4 Haynes, William M. (2016-06-22). CRC Handbook of Chemistry and Physics. CRC Press. pp. 2016–2652. ISBN   978-1-4987-5429-3.
  2. Solubility_Table_Zh.PDF_version.pdf
  3. "Praseodymium triiodide". pubchem.ncbi.nlm.nih.gov.
  4. 1 2 Timofte, T.; Babai, A.; Meyer, G.; Mudring, A.-V. (2005). "Praseodymium triiodide nonahydrate". Acta Crystallogr. E . 61 (6): i94 –i95. Bibcode:2005AcCrE..61I..94T. doi:10.1107/S1600536805012857.
  5. 1 2 3 "Solubility_Table_Zh" (PDF). 27 August 2016.
  6. 1 2 Asprey, L. B.; Keenan, T. K.; Kruse, F. H. (1964). "Preparation and Crystal Data for Lanthanide and Actinide Triiodides". Inorg. Chem. 3 (8): 1137–1141. doi:10.1021/ic50018a015.
  7. Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN   978-0-19-965763-6.
  8. E. Warkentin, H. Bärnighausen (1979), "Die Kristallstruktur von Praseodymdiiodid (Modifikation V)", Zeitschrift für anorganische und allgemeine Chemie (in German), vol. 459, no. 1, pp. 187–200, doi:10.1002/zaac.19794590120
  9. Heiniö, Outi; Leskelä, Markku; Niinistö, Lauri; Tuhtar, Dinko; Sjöblom, Johan; Strand, T. G.; Sukhoverkhov, V. F. (1980). "Structural and Thermal Properties of Rare Earth Triiodide Hydrates". Acta Chemica Scandinavica . 34a: 207–211. doi: 10.3891/acta.chem.scand.34a-0207 . ISSN   0904-213X.
  10. Uchenye zapiski: Serii︠a︡ khimicheskikh nauk (S.M. Kirov adyna Azărbai̐jan Dȯvlăt Universiteti; 1977), trang 37. Truy cập 1 tháng 1 năm 2021.
  11. Russian Journal of Inorganic Chemistry, Tập 18,Phần 2 (British Library Lending Division with the cooperation of the Royal Society of Chemistry, 1973), trang 1655. Truy cập 1 tháng 1 năm 2021.
  12. Villars, Pierre; Cenzual, Karin; Gladyshevskii, Roman (24 July 2017). Handbook of Inorganic Substances 2017. Walter de Gruyter GmbH & Co KG. p. 5090. ISBN   978-3-11-043655-6.
  13. Gerlitzki, Niels; Meyer, Gerd; Mudring, Anja-Verena; Corbett, John D. (2004). "Praseodymium diiodide, PrI2, revisited by synthesis, structure determination and theory". J. Alloys Compd. 380 (1–2). Elsevier BV: 211–218. doi:10.1016/j.jallcom.2004.03.046. ISSN   0925-8388.