Indium lower halides

Halides. Indium trichloride [10025-83-8] InCl, can be made by heating indium in excess chlorine or by chlorinating lower chlorides. It is a white crystalline soHd, deUquescent, soluble in water, and has a high vapor pressure. InCl forms chloroindates, double salts with chlorides of alkaLi metals, and organic bases. 

Some of the physical properties of the halides of lower-valent indium are listed in Table I. 

We also investigated solutions of quinones and substituted catechols, in the latter case using mixtures of ammonia and an organic solvent to achieve sufficient solubility, and here the electrochemical efficiency shows that indium goes to the +III oxidation state. In the presence of an o-quinone, oxidation of the lower oxidation state halide leads to InX(catecholate), and hence by substitution to InX3> When a 1,2-diol is used, there are again questions as to the solute species which are generated at the cathode, but the overall reaction can be written as... 

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