 | |
 | |
| 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 | |
Othercations | Osmium(VIII) oxide |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Hassium tetroxide (alsohassium(VIII) oxide) is theinorganic compound with theformula HsO4. It is the highestoxide ofhassium, atransactinidetransition metal. It has little use outside of scientific interest, where it is often studied in comparison toosmium tetroxide andruthenium tetroxide, its lighter octavalentgroup 8 element analogs.
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 typicalcongener to osmium tetroxide. Hassium tetroxide is less volatile than osmium tetroxide.[2][3][4]
Hassium tetroxide can be obtained by reacting atomic hassium with oxygen at 600 °C.[3][2]
Hassium tetroxide can be combined withsodium hydroxide in an acid-base reaction, in which case it acts like the acid, to formsodium hassate(VIII):[5]