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Fluorosulfite

Names
Other names Sulfurofluoridoite
Identifiers
CAS Number	22539-11-3
3D model (JSmol)	Interactive image
ChemSpider	24807319
PubChem CID	13152769
CompTox Dashboard (EPA)	DTXSID60522430
InChI InChI=1S/FHO2S/c1-4(2)3/h(H,2,3)/p-1Key: HMKJMFKGFGKCPL-UHFFFAOYSA-M
SMILES S(=O)F
Properties
Chemical formula	FO2S
Molar mass	83.06 g·mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Fluorosulfite is an ion with the formula SO₂F. The term is also used for compounds or salts containing this group. Fluorosulfite was discovered in 1953 by F Seel and H Meier.

Organic compounds with the name "fluorosulfite" contain the group -OS(O)F.

Preparation

can be prepared from OSF₄ and Me₃SiNMe₂. Alkali metal fluorosulfites can be made by soaking the metal fluoride in liquid sulfur dioxide for a few days. β-CsSO₂F converts to α-CsSO₂F when heated to 110 °C for a couple of days but remains stable below 50 °C.

Properties

The fluorosulfite ion is tetrahedral, with sulfur at the top. The oxygen to sulfur bonds are 147.8 pm and the fluorine to sulfur bond is >169.0 pm long. In solid ionic fluorosulfites, the ion is not fixed in orientation and continuously turns around resulting in dynamic disorder. At room temperature this turning rate is from 2×10 to 10 Hz. When cooled the rate of rotation slows, and can be frozen in place, resulting in static disorder.

Fluorosulfite is isoelectronic with chloryl fluoride (ClO₂F) and in compounds it resembles chlorate (ClO₃).

The heat of formation from fluoride (F) and sulfur dioxide (SO₂) is 50 kcal mol.

Reactions

Fluorosulfites can react with chlorophosphazenes to make fluorophosphazenes:

(NPCl₂)_n + 2n KSO₂F → (NPF₂)_n + 2n KCl + 2nSO₂ n=3 or 4

Related

Fluorosulfite is in the category of halosulfite ions which include chlorosulfite, bromosulfite and iodosulfite. Related ions include cyanosulfite SO₂CN.

List

References

1. ^ Seel, F.; Meier, H. (December 1953). "Die Chemie des Nitrosyl-Ions. IX. Über den Chemismus des Bleikammerverfahrens". Zeitschrift für anorganische und allgemeine Chemie (in German). 274 (4–5): 197–222. doi:10.1002/zaac.19532740404. ISSN 0044-2313.
2. Baasner, Bernd (2014). Houben-Weyl Methods of Organic Chemistry Vol. E 10a, 4th Edition Supplement: Organo-Fluorine Compounds - Fluorinating Agents and Their Application in Organic Synthesis. Georg Thieme Verlag. pp. 332–334. ISBN 978-3-13-181544-6.
3. ^ Lork, Enno; Mews, Rüdiger; Viets, Detlef; Watson, Paul G.; Borrmann, Tobias; Vij, Ashwani; Boatz, Jerry A.; Christe, Karl O. (March 2001). "Structure of the SO 2 F - Anion, a Problem Case 1". Inorganic Chemistry. 40 (6): 1303–1311. doi:10.1021/ic000616p. ISSN 0020-1669. PMID 11300833.
4. ^ Kessler, Ulrich; van Wüllen, Leo; Jansen, Martin (2001-12-01). "Structure of the Fluorosulfite Anion: Rotational Disorder of SO₂F in the Alkali Metal Fluorosulfites and Crystal Structures of α- and β-CsSO₂F". Inorganic Chemistry. 40 (27): 7040–7046. doi:10.1021/ic010303+. ISSN 0020-1669. PMID 11754288.
5. Maulitz, Andreas H.; Boese, Roland; Kuhn, Norbert (April 1995). "Ab initio studies on halosulfite ions". Journal of Molecular Structure: THEOCHEM. 333 (3): 227–232. doi:10.1016/0166-1280(94)03955-K.
6. Allcock, H. (2012). Phosphorus-Nitrogen Compounds: Cyclic, Linear, and High Polymeric Systems. Elsevier. p. 207. ISBN 978-0-323-14751-4.
7. Robertson, Katherine N.; Land, Michael A.; Murphy, Luke J.; Doyle, Kirstin A.; Clyburne, Jason A. C. (2018-07-20). "Sulfur dioxide–halide ion complexes: a crystallographic investigation of bonding". Acta Crystallographica Section A. 74 (a1): a341. doi:10.1107/S0108767318096599. ISSN 2053-2733.
8. Kornath, Andreas; Blecher, Oliver; Ludwig, Ralf (April 1999). "Synthesis and Characterization of Tetramethylammonium Cyanosulfite, (CH₃)₄NSO₂CN". Journal of the American Chemical Society. 121 (16): 4019–4022. doi:10.1021/ja9833422. ISSN 0002-7863.
9. ^ Kuhn, Norbert; Bohnen, Hans; Fahl, Joanna; Bläser, Dieter; Boese, Roland (December 1996). "Derivate des Imidazols, XIX. Koordination oder Reduktion? Zur Reaktion von 1,3-Diisopropyl-4,5-dimethylimidazol-2-yliden mit Schwefelhalogeniden und Schwefeloxidhalogeniden". Chemische Berichte (in German). 129 (12): 1579–1586. doi:10.1002/cber.19961291228.
10. Zhu, Shi-Zheng; Huang, Qi-Chen; Wu, Kuang (September 1994). "Synthesis and Structure of (Difluoromethyl)triphenylphosphonium Fluorosulfite, Evidence for Formation of Difluorosulfene as an Intermediate". Inorganic Chemistry. 33 (20): 4584–4585. doi:10.1021/ic00098a028. ISSN 0020-1669.

• Sulfites
• Fluorine compounds