Selenium tetrafluoride

Structural formula
General
Surname	Selenium tetrafluoride
other names	Selenium (IV) fluoride
Molecular formula	SeF 4
Brief description	colorless liquid
External identifiers / databases
CAS number 13465-66-2 EC number 236-703-6 ECHA InfoCard 100.033.352 PubChem 123311 Wikidata Q2466871
properties
Molar mass	154.95 g mol −1
Physical state	liquid
density	2.72 g cm −3
Melting point	−9.5 ° C
boiling point	106 ° C
solubility	violent decomposition in water
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Selenium tetrafluoride is an inorganic chemical compound of selenium from the group of fluorides .

Extraction and presentation

Selenium tetrafluoride can be obtained by reacting selenium with fluorine .

${\displaystyle \mathrm {Se+2\ F_{2}\longrightarrow SeF_{4}} }$

The preparation by halogenation of selenium dioxide with sulfur tetrafluoride , boron trifluoride or hydrogen fluoride is also possible .

properties

Selenium tetrafluoride is a colorless liquid that is miscible with sulfuric acid , ethanol , ether and iodine pentafluoride . It decomposes violently on contact with water. Metal fluorides such as sodium fluoride , potassium fluoride , rubidium fluoride , cesium fluoride and thallium (I) fluoride dissolve in selenium tetrafluoride with the formation of the metal-SeF ₅ complexes. It also attacks glass.

Individual evidence

1. ↑ ^{a b c d e f g h} 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. 195.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 620.
4. ^ Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . Taylor & Francis US, 2011, ISBN 1-4398-1462-7 , pp. 360 ( limited preview in Google Book Search).