Hassium tetroxide

Hassium tetroxide
Stick model hassium tetroxide
Names
Preferred IUPAC name
Hassium tetraoxide
Systematic IUPAC name
Tetraoxohassium
Other names
Hassium(VIII) oxide
Identifiers
3D model (JSmol)
  • InChI=1S/4O.Hs
    Key: ZEDIDOIMNXPGSR-UHFFFAOYSA-N
  • O=[Hs](=O)(=O)=O
Properties
HsO4
Molar mass 334 g·mol−1
Structure[1]
tetrahedral (predicted)
Related compounds
Other cations
 Osmium(VIII) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Hassium tetroxide (also hassium(VIII) oxide) is the inorganic compound with the formula HsO4. It is the highest oxide of hassium, a transactinide transition metal. It has little use outside of scientific interest, where it is often studied in comparison to osmium tetroxide and ruthenium tetroxide, its lighter octavalent group 8 element analogs.

Physical properties

Because of the extreme cost and difficulty of producing hassium, hassium tetroxide has never been obtained in macroscopic amounts, as only a few molecules have ever been synthesized. As a result, many of its physical properties are experimentally uncharacterized and unknown. However, most research available generally shows hassium tetroxide to behave like a typical congener to osmium tetroxide. Hassium tetroxide is less volatile than osmium tetroxide.[2][3][4]

Synthesis

Hassium tetroxide can be obtained by reacting atomic hassium with oxygen at 600 °C.[3][2]

Hs + 2 O2 → HsO4

Reactions

Hassium tetroxide can be combined with sodium hydroxide in an acid-base reaction, in which case it acts like the acid, to form sodium hassate(VIII):[5]

HsO4 + 2 NaOH → Na2[HsO4(OH)2]

References

  1. ^ Gulzari, Malli L. (2002). "Dramatic relativistic effects in atomization energy and volatility of the superheavy Hassium tetroxide and OsO4". Journal of Chemical Physics. 117 (23): 10441–10443. Bibcode:2002JChPh.11710441M. doi:10.1063/1.1527057.
  2. ^ a b "Chemistry of Hassium" (PDF). Gesellschaft für Schwerionenforschung. 2002. Archived from the original (PDF) on 2012-03-11. Retrieved 2019-06-30.
  3. ^ a b Düllmann, Ch. E.; Brüchle, W.; Dressler, R.; et al. (August 2002). "Chemical investigation of hassium (element 108)". Nature. 418 (6900): 859–862. Bibcode:2002Natur.418..859D. doi:10.1038/nature00980. PMID 12192405. S2CID 4412944.
  4. ^ Hoffman, Lee & Pershina 2006, pp. 1714–1715.
  5. ^ von Zweidorf, A.; Angert, R.; Brüchle, W.; et al. (2003). "Final result of the CALLISTO-experiment: Formation of sodium hassate(VIII)" (PDF). Advances in Nuclear and Radiochemistry. Vol. 3. Forschungszentrum Jülich. pp. 141–143. ISBN 978-3-89336-362-9. Retrieved 2023-07-11.

Sources