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dithionate(2-)
Sign in to saveAlso known as [O3SSO3](2-), [S2O6](2-)
The dithionate (or metabisulfate) anion, , is a sulfur oxoanion derived from dithionic acid, H2S2O6. Its chemical formula is sometimes written in a semistructural format, as [O3SSO3]2−. It is the first member of the polythionates.
Chemical data
- Formula
- O6S2-2
- Molecular weight
- 160.13 g/mol
- SMILES
- [O-]S(=O)(=O)S(=O)(=O)[O-]
- InChIKey
- RMGVZKRVHHSUIM-UHFFFAOYSA-L
- XLogP
- -2
- Polar surface area
- 131 Ų
- H-bond donors
- 0
- H-bond acceptors
- 6
- Formal charge
- -2
via PubChem
Wikidata facts
- Mass
- 159.914
Show 3 more facts
- canonical SMILES
- [O-]S(=O)(=O)S(=O)(=O)[O-]
- Commons category
- Dithionate ion
- chemical formula
- O₆S₂²⁻
Sources (2)
via Wikidata · CC0
~1 min read
Encyclopedic overview
3 sectionsContents
- Compounds
- References
- External links
The dithionate (or metabisulfate) anion, , is a sulfur oxoanion derived from dithionic acid, H2S2O6. Its chemical formula is sometimes written in a semistructural format, as [O3SSO3]2−. It is the first member of the polythionates.
The sulfur atoms of the dithionate ion are in the +5 oxidation state due to the presence of the S–S bond. Generally, dithionates form stable compounds that are not readily oxidised or reduced. Strong oxidants oxidise them to sulfates and strong reducing agents reduce them to sulfites and dithionites. Aqueous solutions of dithionates are quite stable and can be boiled without decomposition.
Excerpted from Wikipedia’s “dithionate(2-)” article, available under the CC BY-SA 4.0 licence.