1,3-Difluoro-trisulfane-1,1-difluoride is an inorganic molecular substance with the structure SF
3SSF, consisting of sulfur in a low
oxidation state
In chemistry, the oxidation state, or oxidation number, is the hypothetical charge of an atom if all of its bonds to different atoms were fully ionic. It describes the degree of oxidation (loss of electrons) of an atom in a chemical compound. C ...
with
fluorine
Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. As the most electronegative reactive element, it is extremely reacti ...
. 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.
SF
3SSF is produced by the condensation of
sulfur difluoride
Sulfur difluoride is an inorganic compound with the chemical formula SF2. It can be generated by the reaction of sulfur dichloride and potassium fluoride or mercury(II) fluoride at low pressures:
:SCl2 + 2 KF → SF2 + 2 KCl
:SCl2 + HgF2 → SF2 + ...
and an isomer of
SSF2. The reaction S
3F
4 SSF
2 + SF
2 uses 6 kJ/mol.
Possible isomers of its S
3F
4 molecular formula include FSSF
2SF, which has a spontaneous fluorine migration to yield F
2SSSF
2, which in turn spontaneously fragments to give SF
2 and SSF
2.
References
{{DEFAULTSORT:Difluoro-trisulfane-1,1-difluoride, 1,3-
Sulfur fluorides