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Contents

   



(Top)
  


1 Osmium(I) iodide  




2 Osmium(II) iodide  




3 Osmium(III) iodide  




4 Osmium(IV) iodide  




5 References  













Osmium iodides






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From Wikipedia, the free encyclopedia
  

Osmium iodide refers to compounds of osmium with the formula OsIn. Several have been mentioned in the literature, but only the triiodide has been verified by X-ray crystallography.[1][2]

Osmium(I) iodide

[edit]

Osmium(I) iodide is the iodide of osmium with the formula OsI. It is a metallic grey solid produced by the reaction of osmium tetroxide and hydroiodic acid heated in a water bath for 48 hours in a carbon dioxide atmosphere. This compound is amorphous.[2]

Osmium(II) iodide

[edit]

Osmium(II) iodide is the iodide of osmium with the formula OsI2. It is a black solid[3] produced by the reaction of osmium tetroxide and hydroiodic acid at 250 °C in nitrogen:[2]

OsO4 + HI → OsI2 + H2O

This compound decomposes in contact with water.[3]

Osmium(III) iodide

[edit]

Osmium(III) iodide is the iodide of osmium with the formula OsI3. This black solid is produced by heating hexaiodoosmic acid(H2OsI6).[2] This compound is insoluble in water.[3]

Osmium(IV) iodide

[edit]

What was claimed to be osmium(IV) iodide was produced by the reaction of osmic acid (H4OsO6) and hydroiodic acid.[4] However on attempted reproduction, this substance was found to be dihydroxonium hexaiodoosmate ((H3O+)2OsI62–). When heated this did not form a tetraiodo compound, and instead formed mono, di, and tri-iodo osmium compounds.[2]

References

[edit]
  1. ^ Köhler, J. (2014). "Halides: Solid-State Chemistry". Encyclopedia of Inorganic and Bioinorganic Chemistry. pp. 1–22. doi:10.1002/9781119951438.eibc0078.pub2. ISBN 9781119951438.
  • ^ a b c d e Fergusson, J. E.; Robinson, B. H.; Roper, W. R. (1962). "405. Iodides of osmium and rhenium". Journal of the Chemical Society (Resumed): 2113. doi:10.1039/JR9620002113.
  • ^ a b c George K. Schweitzer; Lester L. Pesterfield (2009). The Aqueous Chemistry of the Elements (Ebook). Oxford University Press. p. 321. ISBN 9780199742196. Retrieved 11 November 2021.
  • ^ "The Chemistry of Osmium". the Sciences. Vol. 35, no. 904supp. Scientific American. 1893. pp. 14453–14454. doi:10.1038/scientificamerican04291893-14453supp.

    • Retrieved from "https://en.wikipedia.org/w/index.php?title=Osmium_iodides&oldid=1211970376"
    Categories: 
    ●Osmium compounds
     ●Iodides
      


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