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Protactinium triiodide

From Wikipedia, the free encyclopedia
Protactinium triiodide
Names
IUPAC name
Protactinium triiodide
Other names
Protactinium(III) iodide
Identifiers
3D model (JSmol)
  • InChI=1S/3HI.Pa/h3*1H;/q;;;+3/p-3
    Key: CTZOGZYRIBUUIZ-UHFFFAOYSA-K
  • I[Pa](I)I
Properties
I3Pa
Molar mass611.74929 g·mol−1
Appearancedark brown solid
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Protactinium triiodide is an inorganicchemical compound with the chemical formulaPaI3.[1][2]

Synthesis

[edit]

The compound can be obtained fromPaI5 by heating at 350-380 °C in a continuously pumping vacuum.[3][4]

Physical properties

[edit]

PaI3 forms a dark brown solid.[3] The compound has aPaBr3 crystal structure.[3]

References

[edit]
  1. ^"WebElements Periodic Table » Protactinium » protactinium triiodide". webelements.com. Retrieved29 September 2025.
  2. ^Brown, D. (1968).Halides of the Lanthanides and Actinides. Wiley. p. 272.ISBN 978-0-470-10840-6. Retrieved29 September 2025.
  3. ^abcMacintyre, Jane E. (23 July 1992).Dictionary of Inorganic Compounds.CRC Press. p. 3502.ISBN 978-0-412-30120-9. Retrieved29 September 2025.
  4. ^Protactinium: The metal. Alloys. Compounds. Solution chemistry.Springer-Verlag. 1977. p. 70.ISBN 978-0-387-93355-9. Retrieved29 September 2025.
Pa(II)
Pa(III)
Pa(IV)
Pa(V)
Salts and covalent derivatives of theiodide ion
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