Vanadium (II) fluoride
Crystal structure | |||||||
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__ V 2+ __ F - | |||||||
General | |||||||
Surname | Vanadium (II) fluoride | ||||||
other names |
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Ratio formula | VF 2 | ||||||
Brief description |
blue, crystalline powder |
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External identifiers / databases | |||||||
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properties | |||||||
Molar mass | 88.938 g mol −1 | ||||||
Physical state |
firmly |
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solubility |
dissolves in water with formation of [V (H 2 O) 6 ] 2+ ions |
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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 . |
Vanadium (II) fluoride is a chemical compound of the elements vanadium and fluorine . It's a blue, crystalline powder.
Extraction and presentation
Vanadium (II) fluoride can be obtained by reducing vanadium (III) fluoride with hydrogen in a hydrogen fluoride solution at 1150 ° C:
properties
Physical Properties
Vanadium (II) fluoride crystallizes in the tetragonal crystal system in the space group P 4 2 / mnm (space group no. 136) with the lattice parameters a = 480.4 pm and c = 323.7 pm.
Chemical properties
Vanadium (II) fluoride is a powerful reducing agent that even reduces nitrogen to hydrazine in the presence of magnesium hydroxide .
It dissolves in water with the formation of [V (H 2 O) 6 ] 2+ ions:
Individual evidence
- ↑ Vanadium (II) fluoride on webelements.com
- ^ A b c A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1550.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ Lothar Kolditz: Inorganic Chemistry Part 2 . VEB Deutscher Verlag der Wissenschaften, Berlin, 1980, p. 641.
- ↑ JW Stout, WOJ Boo: Crystalline vanadium (II) fluoride, VF 2 . Preparation, structure, heat capacity from 5 to 300 ° K and magnetic ordering . In: The Journal of Chemical Physics . 71, 1, 1979, pp. 1-8, doi : 10.1063 / 1.438115 .