page_title: Organoiridium compound
section_title: Iridium(III)
hierarchical_section_title: Organoiridium compound / Classification based on principal oxidation states / Iridium(III)
caption_attribution_description: English: improved, C-HWAG&amp;RGB.png is bad
context_page_description: Organoiridium chemistry is the chemistry of organometallic compounds containing an iridium-carbon chemical bond. Organoiridium compounds are relevant to many important processes including olefin hydrogenation and the industrial synthesis of acetic acid. They are also of great academic interest because of the diversity of the reactions and their relevance to the synthesis of fine chemicals.
context_section_description: Iridium is usually supplied commercially in the Ir(III) and Ir(IV) oxidation states.  Important starting reagents being hydrated iridium trichloride and ammonium hexachloroiridate.  These salts are reduced upon treatment with CO, hydrogen, and alkenes.  Illustrative is the carbonylation of the trichloride:
  IrCl₃(H₂O)ₓ  +  3 CO   →  [Ir(CO)₂Cl₂]⁻  +  CO₂  +  2 H⁺ +  Cl⁻ + (x-1) H₂O
  Many organoiridium(III) compounds are generated from pentamethylcyclopentadienyl iridium dichloride dimer.  Many of derivatives feature kinetically inert cyclometalated ligands.  Related half-sandwich complexes were central in the development of C-H activation.
caption: Organoiridium chemistry has been central to the development of C-H activation, two examples of which are shown here.
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