Chemical elements
    Physical Properties
    Chemical Properties
      Iridium Monochloride
      Iridium Dichloride
      Iridium Trichloride
      Potassium Chloriridite
      Sodium Chloriridite
      Ammonium Chloriridite
      Aquo Chloriridites
      Iridium Tetrachloride
      Potassium Chloriridate
      Sodium Chloriridate
      Ammonium Chloriridate
      Silver Chloriridate
      Thallium Chloriridate
      Iridium Tribromide
      Iridium Tetrabromide
      Potassium Bromiridate
      Sodium Bromiridate
      Ammonium Bromiridate
      Iridium Oxybromide
      Iridium Tri-iodide
      Potassium Iodiridite
      Iridium Tetra-iodide
      Potassium Iodiridate
      Iridium Monoxide
      Iridium Sesquioxide
      Iridium Dioxide
      Iridium Trioxide
      Iridium Monosulphide
      Iridium Sesquisulphide
      Iridium Disulphide
      Iridium Sesquisulphite
      Potassium Iridium Sulphite
      Iridium Sesquisulphate
      Potassium Iridium Alum
      Ammonium Iridium Alum
      Caesium Iridium Alum
      Rubidium Iridium Alum
      Iridium Disulphate
      Iridium Sesquiselenide
      Hydrogen Iridi-nitrite
      Potassium Iridi-nitrite
      Sodium Iridi-nitrite
      Ammonium Iridi-nitrite
      Hydrogen Iridicyanide
      Potassium Iridicyanide
      Barium Iridicyanide
    PDB 1c1k-4enb

Potassium Chloriridate, K2IrCl6

Potassium Chloriridate, K2IrCl6, is prepared by heating a mixture of iridium and potassium chloride in chlorine, and purifying the product by crystallisation from its aqueous solution. The mother- liquor contains some chloriridite, which, however, may be converted into the iridate by addition of chlorine water. The salt may also be obtained by decomposing sodium chloriridate with potassium chloride or by boiling a solution of the ammonium salt with potassium hydroxide. It crystallises in black, regular octahedra, which are but slightly soluble in water, and insoluble in saturated potassium chloride solution, as also in alcohol. The aqueous solution on boiling is partially decomposed, yielding the chloriridite. When heated strongly, metallic iridium and potassium chloride remain. Heated to 440° C. in a current of hydrogen chloride, the anhydrous, insoluble trichloride is obtained, together with soluble chloriridite.

Potassium chloriridate is isomorphous with potassium chlorplatinate, K2PtCl6.

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