text: The hexachlorocobaltate(III) anion  has been identified in preparations of cobalt(III) salts and hydrochloric acid  in glacial acetic acid. 
  In solutions of cobalt(III) salts with chloride ions, the anionic complexes  and  are present.
  Trichlorides of cobalt(III) complexed with various ligands, such as organic amines, can be quite stable.  In particular, hexamminecobalt(III) chloride  is the archetypal Werner complex and has uses in biological research.  Another classical example is tris(ethylenediamine)cobalt(III) chloride .