Chemistry:Sulfur difluoride
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| Names | |||
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| IUPAC name
sulfoxylic difluoride
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3D model (JSmol)
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| Properties | |||
| SF2 | |||
| Molar mass | 70.062 g/mol | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
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Tracking categories (test):
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 + HgCl2
The F−S−F bond angle is 98°, and the length of S−F bond is 159 pm.[1] The compound is highly unstable, dimerising to FSSF3. This unsymmetrical isomer of S2F4 is proposed to arise via insertion of SF2 into the S−F bond of a second molecule SF2:[2]
It can also be formed from oxygen difluoride and hydrogen sulfide:[citation needed]
- OF2 + H2S → SF2 + H2O
References
- ↑ Johnson, D. R.; Powell, F. X. (1969). "Microwave Spectrum and Structure of Sulfur Difluoride". Science 164 (3882): 950–1. doi:10.1126/science.164.3882.950. PMID 17775599.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
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