Everything about The Tetrathionate totally explained
The
tetrathionate anion, S
4O
62−, is a
sulfur oxoanion derived from the compound tetrathionic acid, H
2S
4O
6. Two of the sulfur
atoms present in the ion are in
oxidation state 0 and two are in oxidation state +5. Alternatively, the compound can be viewed as the
adduct resulting from the binding of the
Lewis base S22− to
SO3. Tetrathionate is one of the polythionates, a family of anions with the formula [S
n(SO
3)
2]
2−.
Tetrathionate is a product of the
oxidation of
thiosulfate, S
2O
32−, by
iodine, I
2:
» 2S
2O
32− + I
2 → S
4O
62− + 2
I−
Structure
Tetrathionate's structure can be visualized as following three edges of a cube, as in the diagram below. The structure shown is the configuration of S
4O
62− in BaS
4O
6·2H
2O and Na
2S
4O
6·2H
2O. Dihedral S-S-S angles approaching 90° are common in
polysulfides.
Compounds
Compounds containing the tetrathionate anion include
sodium tetrathionate, Na
2S
4O
6,
potassium tetrathionate, K
2S
4O
6, and
barium dithionate
dihydrate, BaS
4O
6·2H
2O.
Further Information
Get more info on 'Tetrathionate'.
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