Chemical elements
  Antimony
    Isotopes
    Energy
    Production
    Application
    Physical Properties
    Chemical Properties
    Compounds
      Antimony Trihydride
      Antimony Trifluoride
      Antimony Pentafluoride
      Antimony Trichloride
      Oxychlorides of Tervalent Antimony
      Antimony Tetrachloride
      Antimony Pentachloride
      Chloroantimonic Acids
      Antimonyl Perchlorate
      Antimony Tribromide
      Antimony Oxybromides
      Antimony Pentabromide
      Antimony Triiodide
      Antimony Oxyiodide or Antimonyl Iodide
      Antimony Thioiodide
      Mixed Antimony Halides
      Antimony Trioxide
      Hydrated Antimony Trioxide
      Antimonites
      Antimony Tetroxide or Antimony Dioxide
      Antimony Pentoxide
      Antimony Trisulphide
      Antimony Pentasulphide
      Thioantimonates
      Normal Antimony Sulphate
      Potassium Stibiothiosulphate
      Antimony Selenate
      Antimony tritelluride
      Antimony Phosphide
      Antimonyl Dihydrogen Phosphite
      Antimony Phosphate
      Antimony Pyrophosphate
      Antimony Thiophosphate
    PDB 1exi-2xqa

Antimony Thioiodide, SbSI






Antimony Thioiodide, SbSI, is obtained by the action of antimony trisulphide on antimony triiodide, by the action of iodine upon antimony trisulphide, or by the action of hydrogen sulphide upon antimony triiodide heated to 150° C. It crystallises in small, dark red, lustrous, needle-shaped crystals of a form similar to those of kermesite. It melts at 392° C. and above this temperature decomposes forming a mixture of trisulphide and triiodide. It is not decomposed by hot or cold water, or by dilute acids. Hydrogen sulphide is set free by the action of concentrated hydrochloric acid; sulphur and iodine by the action of concentrated nitric acid. Alkali hydroxides and carbonates remove iodine, leaving a residue of thioantimonites.

Several antimony iodocyanides have been obtained. By heating mercuric cyanide and antimony triiodide in dry xylene, mercuric antimony iodocyanide, Hg[SbI3(CN)2], is obtained. Further heating results in the formation of trimercuric antimony iodocyanide, Hg3[Sb2I6(CN)6]; while the corresponding cuprous compound, Cu6[Sb2I6(CN)6], is obtained in a similar manner.


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