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Keywords:

  • molybdenum hexachloride;
  • rhenium hexachloride;
  • vanadium pentachloride
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Vanadium pentachloride and molybdenum and rhenium hexachloride are all thermally unstable but can be prepared by metathesis from the corresponding fluorides with BCl3 at low temperatures. MoCl6 is structurally related to β-WCl6, and ReCl6 to α-WCl6. VCl5 is a dimer in the solid state (see structure; V red, Cl green).