Vanadium (V) fluoride

Crystal structure
V 5+ : __ F - : __
General
Surname	Vanadium (V) fluoride
other names	Vanadium pentafluoride
Ratio formula	VF 5
Brief description	colorless liquid
External identifiers / databases
CAS number 7783-72-4 EC number 232-023-9 ECHA InfoCard 100.029.112 PubChem 165641 Wikidata Q284918
properties
Molar mass	145.93 g mol −1
Physical state	liquid
density	2.5 g cm −3
Melting point	19.5 ° C
boiling point	48.3 ° C
solubility	Easily soluble in ethanol, chloroform, acetone and ligroin insoluble in carbon disulfide Decomposition of toluene and ether
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 .

Vanadium (V) fluoride is a chemical compound from the fluoride group . It is the only known halide that contains vanadium in the + V oxidation state . The compound is a colorless, viscous liquid at room temperature and a white solid below 19.5 ° C.

Extraction and presentation

Vanadium (V) fluoride can be synthesized at 300 ° C from the elements vanadium and fluorine or by disproportionation from vanadium (IV) fluoride .

${\displaystyle \mathrm {2\ V+5\ F_{2}\longrightarrow 2\ VF_{5}} }$

${\displaystyle \mathrm {2\ VF_{4}\longrightarrow VF_{3}+VF_{5}} }$

properties

Vanadium (V) fluoride crystallizes in a chain structure. In this case, VF are ₆ - octahedra linked cis-over adjacent corners. In the gas phase there are trigonal-bipyramidal molecules.

The compound is soluble in water with a red-yellow color.

Individual evidence

1. ↑ ^{a b c d} vanadium (V) fluoride at webelements.com
2. ↑ ^{a b c d} Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 260.
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
4. ↑ G. Brauer (Ed.), Handbook of Preparative Inorganic Chemistry 2nd ed., Vol. 1, Academic Press 1963, pp. 253-4.

literature

• AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1545.