| |
| |
| Names | |
|---|---|
|
Preferred IUPAC name
Hassium tetraoxide | |
|
Systematic IUPAC name
Tetraoxohassium | |
| Other names
Hassium(VIII) oxide
| |
| Identifiers | |
3D model (
JSmol)
|
|
| |
| |
| 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
- ^ 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.
- ^ a b "Chemistry of Hassium" (PDF). Gesellschaft für Schwerionenforschung. 2002. Archived from the original (PDF) on 2012-03-11. Retrieved 2019-06-30.
- ^ 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.
- ^ Hoffman, Lee & Pershina 2006, pp. 1714–1715.
- ^ 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
- Hoffman, D. C.; Lee, D. M.; Pershina, V. (2006). "Transactinides and the future elements". In Morss, L. R.; Edelstein, N. M.; Fuger, J. (eds.). The Chemistry of the Actinide and Transactinide Elements. Vol. 3 (3rd ed.). Dordrecht, The Netherlands: Springer. pp. 1652–1752. ISBN 1-4020-3555-1.