Chemical elements
    Physical Properties
    Chemical Properties
      Tantalum Pentafluoride
      Tantalum Oxyfluorides
      Tantalum Dichloride
      Tantalum Trichloride
      Tantalum Tetrachloride
      Tantalum Pentachloride
      Tantalum Oxychlorides
      Bromotantalum Bromide
      Tantalum Tribromide
      Tantalum Pentabromide
      Tantalum Oxybromide
      Tantalum Pentiodide
      Tantalum Dioxide
      Tantalum Pentoxide
      Pertantalic Acid
      Tantalum Peroxyfluorides
      Tantalum Disulphide
      Tantalum Sulphates
      Tantalum Mononitride
      Tritantalum Pentanitride
      Tantalum Carbide
    PDB 1dd4-3enh

Tantalum Peroxyfluorides

Tantalum Peroxyfluorides or Fluoroxypertantalates. - The alkali tantalum oxyfluorides also have the property of taking up oxygen by reaction with hydrogen peroxide.

When potassium tantalum fluoride is dissolved in 4 per cent, hydrogen peroxide solution which contains a small amount of hydrofluoric acid, crystals of potassium tantalum peroxyfluoride, 2KF.TaO2F3.H2O, are obtained. This is a remarkably stable substance; it loses water at 100° C. and oxygen only at higher temperatures. With concentrated hydrofluoric acid it yields hydrogen peroxide. The corresponding rubidium salt, 2RbF.TaO2F3.H2O, is prepared similarly.

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