Thionyl fluoride
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | Thionyl fluoride | ||||||||||||||||||
other names |
Thionyl difluoride |
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Molecular formula | F 2 OS | ||||||||||||||||||
Brief description |
colorless gas |
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properties | |||||||||||||||||||
Molar mass | 86.06 g mol −1 | ||||||||||||||||||
Physical state |
gaseous |
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density |
1.780 g cm −3 (−100 ° C) |
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Melting point |
−110.5 ° C |
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boiling point |
−43.7 ° C |
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solubility |
slow hydrolysis in water |
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safety instructions | |||||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Thionyl fluoride is a chemical compound from the group of thionyl halides .
Extraction and presentation
Thionyl fluoride can be obtained by reacting thionyl chloride with hydrogen fluoride or sodium fluoride .
The simplest representation in the laboratory is the reaction of thionyl chloride with antimony (III) fluoride in the presence of antimony (V) chloride as a catalyst :
properties
Thionyl fluoride is a colorless gas that is thermally resistant to red heat. Base metals such as magnesium , nickel , mercury and aluminum are not attacked in a dry atmosphere of up to 125 ° C. While glass is attacked from 400 ° C, no reaction occurs with iron at this temperature. It is only slowly hydrolyzed by ice-cold water and smokes lightly on contact with moist air. In the solid state it has a monoclinic crystal structure with the space group P 2 1 / c (space group no. 14) . It reacts with fluorine to form thionyl tetrafluoride F 4 SO. It is readily soluble in diethyl ether and benzene .
Individual evidence
- ↑ a b c d e f g Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 187.
- ↑ Entry on thionyl fluoride in the GESTIS substance database of the IFA , accessed on July 10, 2016(JavaScript required) .
- ↑ a b c d W. C. Smith and EL Muetterties: Thionyl fluoride . In: Eugene G. Rochow (Ed.): Inorganic Syntheses . tape 6 . McGraw-Hill Book Company, Inc., 1960, pp. 162-163 (English).
- ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 712 ( limited preview in Google Book search).
- ↑ Catherine E. Housecroft: Inorganic Chemistry . Pearson Education, 2005, ISBN 0-13-039913-2 , pp. 450 ( limited preview in Google Book Search).