Vanadium(II) iodide

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Vanadium(II) iodide
Cadmium-iodide-3D-layers.png
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.935 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 239-545-6
PubChem CID
  • InChI=1S/2HI.V/h2*1H;/q;;+2/p-2
    Key: OJFNQCZRUJTCOZ-UHFFFAOYSA-L
  • [V+2].[I-].[I-]
Properties
VI2
Appearanceblack mica-like
Density 5.44 g/cm3
Related compounds
Other anions
vanadium(II) chloride, vanadium(II) bromide
Related compounds
vanadium(III) iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Vanadium(II) iodide is the inorganic compound with the formula VI2. It is a black micaceous solid. It adopts the cadmium iodide structure, featuring octahedral V(II) centers. [1] The hexahydrate [V(H2O)6]I2, an aquo complex, is also known. It forms red-violet crystals. The hexahydrate dehydrates under vacuum to give a red-brown tetrahydrate with the formula V(H2O)4I2. [2]

Preparation

The original synthesis of VI2 involved reaction of the elements. [1]

Solvated vanadium(II) iodides can be prepared by reduction of vanadium(III) chlorides with trimethylsilyl iodide. [3] It reacts with anhydrous ammonia to give the hexaammine complex. [4]

Related Research Articles

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Carbide bromides are mixed anion compounds containing bromide and carbide anions. Many carbide bromides are cluster compounds, containing on, two or more carbon atoms in a core, surrounded by a layer of metal atoms, encased in a shell of bromide ions. These ions may be shared between clusters to form chains, double chains or layers.

Carbide iodides are mixed anion compounds containing iodide and carbide anions. Many carbide iodides are cluster compounds, containing one, two or more carbon atoms in a core, surrounded by a layer of metal atoms, encased in a shell of iodide ions. These ions may be shared between clusters to form chains, double chains or layers.

References

  1. 1 2 Klemm, Wilhelm; Grimm, Ludwig (1942). "Zur Kenntnis der Dihalogenide des Titans und Vanadins". Zeitschrift für Anorganische und Allgemeine Chemie. 249 (2): 198–208. doi:10.1002/zaac.19422490204.
  2. Seifert, Hans-Joachim; Gerstenberg, Burkhard (1962). "Darstellung von Vanadin(II)-Verbindungen aus wäßriger Lösung". Zeitschrift für Anorganische und Allgemeine Chemie. 315 (1–2): 56–63. doi:10.1002/zaac.19623150108.
  3. Hitchcock, Peter B.; Hughes, David L.; Leigh, G. Jeffery; Sanders, J. Roger; De Souza, Jaisa; McGarry, Celine J.; Larkworthy, Leslie F. (1994). "Preparation of New Vanadium(II) Iodides and Crystal Structure of Hexakis(acetonitrile)vanadium(II)(Tetraiodide)". Journal of the Chemical Society, Dalton Transactions (24): 3683. doi:10.1039/DT9940003683.
  4. Eßmann, Ralf; Kreiner, Guido; Niemann, Anke; Rechenbach, Dirk; Schmieding, Axel; Sichla, Thomas; Zachwieja, Uwe; Jacobs, Herbert (1996). "Isotype Strukturen einiger Hexaamminmetall(II)-halogenide von 3d-Metallen: V(NH3)6I2, Cr(NH3)6I2, Mn(NH3)6Cl2, Fe(NH3)6Cl2, Fe(NH3)6Br2, Co(NH3)6Br2 und Ni(NH3)6Cl2". Zeitschrift für Anorganische und Allgemeine Chemie. 622 (7): 1161–1166. doi:10.1002/zaac.19966220709.