Dihydroxydisulfane
 |
|
| Names | |
|---|---|
| Other names
Hydrogen disulfanediolate; Dihydroxidodisulfur; Disulfanediol
|
|
| Identifiers | |
|
3D model (JSmol)
|
|
| ChEBI | |
| ChemSpider | |
| 164020 | |
|
PubChem CID
|
|
|
|
|
|
| Properties | |
| H2O2S2 | |
| Molar mass | 98.13 g·mol−1 |
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
|
| Infobox references | |
Dihydroxydisulfane or hypodithionous acid is a reduced sulfur oxyacid with sulfur in a formal oxidation state of +1. The structural formula is HOSSOH, with all atoms arranged in a chain. It is an isomer of thiosulfurous acid but is lower in energy. Other isomers include HOS(=O)SH, HOS(=S)OH, and HS(=O)(=O)SH. Disulfur monoxide, S2O, can be considered as the anhydride. Unlike many of these other reduced sulfur acids, dihydroxydislfane can be formed in a pure state by reacting hydrogen sulfide with sulfur dioxide at -70°C in dichlorodifluoromethane.
Dihyroxydisulfane may exist in an equilibrium with thiosulfurous acid.
Organic derivatives such as dimethoxydisulfane, diaceto disulfide, and bis (trifluoroaceto) disulfide also exist.
The conjugate bases are called disulfanediolate(1−) HSO−
2 and disulfanediolate(2-) SO2−
2.
Calculations predict that the S-S bond length is 2.013 Å, O-S bond length is 1.645 Å, H-O bond length is 0.943 Å.
Related compounds include isoelectric substances hydrogen tetroxide HOOOOH, hydroxotrisulfane HOSSSH, HSOSSH, and tetrasulfane HSSSSH.
...
Wikipedia