Les complexes halogenes d'iridium

The thermal analysis of sodium hexachloroiridate(III) obtained by the method indicated by us showed that the complex crystallizes with 10 water molecules which are lost in two steps: 8 and 2 water molecules, respectively. The final product of the thermal decomposition of the complex in an oxygen atmosphere is iridium(IV) oxide, while under inert gases metallic iridium is formed. Na₃(IrCl₆) · 10H₂O crystallises in the rhombohedral system witha=16.677 Å andα=100°01′, space group R 3 m, d=2.29 and Z=9. A monoclinic pseudolattice was observed witha=8.338 Å,b=10.15 Å,c=12.52 Å andβ=107°06′ andZ=2.