Iridium complex compounds nonelectrolytes, with diethyl

Iridium(III) compounds are generally more stable than those of iridium(lV), and iridium(III) coordination compounds include some of the most stable complexes known. On treatment with diethyl sulfide, iridium (IV) chloride loses chlorine, and the thio ether coordinates with the resulting iridium(III) chloride to form a mixture of stable, nonelectrolytic isomers of formula [Ir (C2H6)2S sCls]. The reaction is strongly dependent on the solvent it is accelerated in ethanol or acetone but inhibited completely in chloroform or benzene. Even in the presence of aqua regia, the same isomers are obtained—an indication of the extraordinary stability of iridium (III) complexes. 

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