Issue 6, 2024

Recycling organoiridium waste to [(1,5-cyclooctadiene)IrCl]2

Abstract

We report the first process for iridium element recovery from organoiridium waste that is quantitative, pyrolysis-free, and generates no iridium metal. The key step is oxidative degradation of the waste by bleach to crude iridium(IV) hydroxide. Its treatment with hydrazine and then hydrogen peroxide gives synthetically important hexachloroiridic acid, which is converted to [(1,5-cyclooctadiene)IrCl]2 in 87% yield.

Graphical abstract: Recycling organoiridium waste to [(1,5-cyclooctadiene)IrCl]2

Supplementary files

Article information

Article type
Communication
Submitted
11 jan 2024
Accepted
09 fev 2024
First published
14 fev 2024

Green Chem., 2024,26, 3146-3148

Recycling organoiridium waste to [(1,5-cyclooctadiene)IrCl]2

V. Cherepakhin and T. J. Williams, Green Chem., 2024, 26, 3146 DOI: 10.1039/D4GC00151F

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