Institution: | a School of Chemistry, Physics, and Environmental Science, The University of Sussex, Brighton BN1 9QJ, UK b Biological Chemistry Laboratory, John Innes Centre, Norwich Research Park, Colney, Norwich NR4 7UH, UK c Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, Jardim das Americas, 81531-971, Curitiba, PR, Brazil |
Abstract: | Trimethylsilyl iodide is shown to be an efficient metathetical reagent for preparing transition-metal iodides from the corresponding chlorides, though often complications can cause problems. These include reduction of the starting metal chloride when its oxidation state is high, due to the reaction of iodide, and even oxidation of low-oxidation-state compounds, presumably by incipient silyl cations. Finally, some very inert chlorides, such as of iridium(III), react too slowly with the iodide under the experimental conditions, and simple reaction with solvent becomes predominant. |