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Thiazyl trifluoride

Trifluorosulfanenitrile

Thiazyl trifluoride is a chemical compound of nitrogen, sulfur, and fluorine, having the formula . It exists as a stable, colourless gas, and is an important precursor to other sulfur-nitrogen-fluorine compounds. It has tetrahedral molecular geometry around the sulfur atom, and is regarded to be a prime example of a compound that has a sulfur-nitrogen triple bond.

Preparation

can be synthesised by the fluorination of thiazyl fluoride, NSF, with silver(II) fluoride, :

:

or by the oxidative decomposition of by silver(II) fluoride:

:

It is also a product of the oxidation of ammonia by .{{cite book

Direct fluorination of mercury difluorosulfinimide (Hg(NSF2)2) does not give thiazyl trifluoride, but instead the isomeric fluoriminosulfur difluoride (F2SNF).

Reactions

is much more stable than thiazyl fluoride, does not react with ammonia and hydrogen chloride, and only reacts with sodium at 400 °C. However, the fluoride ligands are labile, and can be displaced by secondary amines. Thiazyl trifluoride reacts with carbonyl fluoride () in the presence of hydrogen fluoride to form pentafluorosulfanyl isocyanate ().{{ cite patent

adds reversibly to give .

References

References

  1. (2023-07-17). "Ex situ Generation of Thiazyl Trifluoride (NSF 3 ) as a Gaseous SuFEx Hub**". Angewandte Chemie International Edition.
  2. Oskar Glemser and Rüdiger Mews. (1980). "Chemistry of Thiazyl Fluoride (NSF) and Thiazyl Trifluoride (NSF3): A Quarter Century of Sulfur-Nitrogen-Fluorine Chemistry". [[Angewandte Chemie International Edition in English.
  3. (2008). "The crystal structures of {{chem". Inorganica Chimica Acta.
  4. (2006). "Handbook of Chalcogen Chemistry". The Royal Society of Chemistry.
  5. (2003). "Anorganische Chemie". Walter de Gruyter.
  6. Roesky, H. W.. (1971). "Sulfur in Organic and Inorganic Chemistry". Marcel Dekker.
  7. (1982). "Acylations of pentafluorosulfanylamine, SF5NH2". [[American Chemical Society]].
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fluorides nonmetal-halides nitrides sulfur–nitrogen-compounds
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