Vanadium(V) chloride

Last updated
Vanadium(V) chloride
Other names
vanadium pentachloride
3D model (JSmol)
PubChem CID
  • InChI=1S/5ClH.V/h5*1H;/q;;;;;+5/p-5
  • Cl[V](Cl)(Cl)(Cl)Cl
  • dimer:Cl[V-]1(Cl)(Cl)(Cl)[Cl+][V-]([Cl+]1)(Cl)(Cl)(Cl)Cl
Molar mass 456.38 g·mol−1
Appearanceblack solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Vanadium(V) chloride is the inorganic compound with the formula VCl5. It is a black diamagnetic solid. The molecules adopt a bioctahedral structure similar to that of niobium(V) chloride. [1]

Preparation and reactions

Vanadium(V) chloride is prepared from the vanadium pentafluoride with excess boron trichloride:

2 VF5 + 10 BCl3 → [VCl5]2 + 10 BF2Cl

It is unstable at room temperature with respect to vanadium(IV) chloride:

[VCl5]2 → 2 VCl4 + Cl2

In contrast, the heavier analogues NbCl5 and TaCl5 are stable and not particularly oxidizing.

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  1. Tamadon, Farhad; Seppelt, K. (2012). "The Elusive Halides VCl5, MoCl6, and ReCl6". Angewandte Chemie International Edition. 52 (2): 767–769. doi:10.1002/anie.201207552. PMID   23172658.{{cite journal}}: CS1 maint: uses authors parameter (link)