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1,3-Difluoro-trisulfane-1,1-difluoride

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1,3-Difluoro-trisulfane-1,1-difluoride
Names
IUPAC name
(Trifluoro-λ4-sulfanyl)sulfanyl thiohypofluorite
Identifiers
3D model (JSmol)
  • InChI=1S/F4S3/c1-5-6-7(2,3)4
    Key: YHBRMHFGIJPWAT-UHFFFAOYSA-N
  • FSSS(F)(F)F
Properties
F4S3
Molar mass 172.17 g·mol−1
Melting point −62 °C (−80 °F; 211 K)
Boiling point 94 °C (201 °F; 367 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

1,3-Difluoro-trisulfane-1,1-difluoride is an inorganic molecular substance with the structure SF3SSF, consisting of sulfur in a low oxidation state with fluorine. The compound consists of a chain of three sulfur atoms, with three fluorine atoms bonded to the sulfur on one end and the fourth fluorine bonded to the sulfur on the other end. It has a melting point of -62 °C and a boiling point of 94 °C. As a gas, it is unstable and breaks up to form SSF2 and SF4.[1]

SF3SSF is produced by the condensation of sulfur difluoride and an isomer of SSF2.[2] The reaction S3F4 ⇌ SSF2 + SF2 uses 6 kJ/mol.[3]

Possible isomers of its S3F4 molecular formula include FSSF2SF, which has a spontaneous fluorine migration to yield F2SSSF2, which in turn spontaneously fragments to give SF2 and SSF2.[4]

References

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  1. ^ Willner, Helge (July 1984). "Chalkogenfluoride in niedrigen Oxydationsstufen. IX. Darstellung und Charakterisierung von SF3SSF" [Chalcogen fluorides in lower degrees of oxidation. IX. Preparation and characterization of 1,3-difluorotrisulfane 1,1-difluoride (SF3SSF)]. Zeitschrift für anorganische und allgemeine Chemie. 514 (7): 171–178. doi:10.1002/zaac.19845140721.
  2. ^ Berry, F. J. (1984). "Chapter 6. O, S, Se, Te". Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem. 81: 145. doi:10.1039/IC9848100137.
  3. ^ Lösking, O.; Willner, H.; Baumgärtel, H.; Jochims, H. W.; Rühl, E. (November 1985). "Chalkogenfluoride in niedrigen Oxydationsstufen. X Thermochemische Daten und Photoionisations-Massenspektren von SSF2, FSSF, SF3SF und SF3SSF". Zeitschrift für anorganische und allgemeine Chemie. 530 (11): 169–177. doi:10.1002/zaac.19855301120.
  4. ^ Jug, Karl; Iffert, Rüdiger (April 1989). "SINDO1 study of sulphur isomers and sulphur fluorine compounds". Journal of Molecular Structure: THEOCHEM. 186: 347–359. doi:10.1016/0166-1280(89)87055-1.
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