Английская Википедия:Dithionitronium hexafluoroarsenate

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Шаблон:Chembox Dithionitronium hexafloroarsenate is the inorganic compound with the formula Шаблон:Chem2. It is the hexafluoroarsenate (Шаблон:Chem2) salt of S=N=S+. The cation is of interest as the sulfur analogue of nitronium (Шаблон:Chem2). Hexafloroarsenate is a weakly coordinating anion. According to X-ray crystallography, S=N=S+ is linear with S-N distances of 146 picometers.[1]

Synthesis and reactions

Dithionitronium hexafluoroarsenate is prepared from thiazyl chloride using silver hexafluoroarsenate.[2] The hexachloroantimonate salt can be prepared by treating thiazyl chloride with sulfur in the presence of antimony pentachloride according to this idealized equation:

Шаблон:Chem2

The dithionitronium cation reacts with nitriles to give dithiadiazolium salts:[3]

Шаблон:Chem2

Addition to alkynes gives dithiazolium salts:

Шаблон:Chem2

References

Шаблон:Sulfur compounds