Chemical elements
  Indium
    Isotopes
    Energy
    Production
    Application
    Physical Properties
    Chemical Properties
      Indium Trifluoride
      Indium monochloride
      Indium dichloride
      Indium trichloride
      Indium oxychloride
      Indium monobromide
      Indium tribromide
      Indium oxybromide
      Indium mono-iodide
      Indium di-iodide
      Indium tri-iodide
      Indium perchlorate
      Indium iodate
      Indium sesqui-oxide
      Indium hydroxide
      Indium monosulphide
      Indium disulphide
      Indium sesquisulphide
      Indium trisulphide
      Basic indium sulphite
      Indium sulphate
      Indium sesquiselenide
      Indium selenite
      Indium selenate
      Indium telluride
      Indium silicotungstates
      Indium nitrate
      Indium phosphide
      Indium platinocyanide
      Indium oxalate
      Indium acetylacetonate
    PDB 1ind-1ind

Indium mono-iodide, InI






Indium mono-iodide, InI, is produced when an excess of indium is heated with iodine. Small quantities must be used, unless the reaction is carried out in an atmosphere of carbon dioxide. Indium tri-iodide is reduced to the mono-iodide by repeated distillation in hydrogen. It is a brownish-red solid, which melts at 351° and boils at c. 700°, and maybe distilled in carbon dioxide.

Indium mono-iodide is not attacked by hot water, but dissolves in dilute acids with the evolution of hydrogen. It is insoluble in alcohol, ether, and chloroform. The simultaneous action of air and water leads to the production of indium hydroxide and hydriodic acid. This action is slow with cold water, and the hydroxide is obtained in colloidal solution, but with hot water the hydroxide separates in a form easily filtered.


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