Functionalized cyclopentadienyl rhodium(iii) bipyridine complexes: Synthesis, characterization, and catalytic application in hydrogenation of ketones

Wan Hui Wang, Yuki Suna, Yuichiro Himeda, James T. Muckerman, Etsuko Fujita

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9 Citations (Scopus)


A series of highly functionalized cyclopentadienyl rhodium(iii) complexes, [Cp′Rh(bpy)Br](ClO4) (Cp′ = substituted cyclopentadienyl), was synthesized from various multi-substituted cyclopentadienes (Cp′H). [Rh(cod)Cl]2 and Cp′H were firstly converted to [Cp′Rh(cod)] complexes, which were then treated with Br2 to give the rhodium(iii) dibromides [Cp′RhBr 2]2. The novel complexes [Cp′Rh(bpy)Br](ClO 4) were obtained readily by the reaction of 2,2′-bipyridine with [Cp′RhBr2]2. These rhodium complexes [Cp′Rh(bpy)Br](ClO4) were fully characterized and utilized in the hydrogenation of cyclohexanone and acetophenone with generally high yields, but they did not exhibit the same reactivity trends for the two substrate ketones. The different activity of these complexes for the different substrates may be due to the influence of the substituents on the Cp′ rings.

Original languageEnglish
Pages (from-to)9628-9636
Number of pages9
JournalDalton Transactions
Issue number26
Publication statusPublished - Jul 14 2013


ASJC Scopus subject areas

  • Inorganic Chemistry

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