Pentamethylcyclopentadienyl-rhodium and -iridium halides. Part III. Reactions with cyclohexadienes
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 2884-2888
- https://doi.org/10.1039/j19700002884
Abstract
The dimeric dichloropentamethylcyclopentadienyl-rhodium and -iridium complexes (I) react with both cyclohexa-1,3- and 1,4-diene to give the π-cyclohexa- 1,3-diene-(pentamethylcyclopentadienyl)-rhodium and -iridium complexes. (IV). During this reaction, isomerisation of the uncomplexed cyclohexa-1,4- to the -1,3-diene occurred. The rhodium complex (IV) was a catalyst for the disproportionation of cyclohexa-1,3-diene to cyclohexene and benzene. This reaction was strongly assisted by the presence of the ethanol and base. Mechanisms for the complex formation, isomerisation, and disproportionation are suggested.Keywords
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