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Issue 10, 2011
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Rhodium(III) and ruthenium(II) complexes of redox-active, chelating N-heterocyclic carbene/thioether ligands

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Abstract

Half-sandwich rhodium(III) and ruthenium(II) complexes bearing a new redox-active ferrocenyl NHC–thioether ligand have been prepared. The synthesis of ferrocenyl thioether-imidazolium salts 3a and 3b was carried out via intermediate 2 using an improved procedure. Rhodium(III) complex 4 and ruthenium(II) complex 5 were obtained in good yields and were fully characterised by NMR spectroscopy, X-ray diffraction analysis and electrochemistry. Complex 4 shows a complex ABCD system by 1H NMR, which denotes conformational rigidity due to the presence of several bulky groups. Electrochemical analysis by cyclic voltammetry reveals reversible redox behaviour about the iron centre in 4 and 5, and indicates electronic communication between iron and rhodium or ruthenium.

Graphical abstract: Rhodium(iii) and ruthenium(ii) complexes of redox-active, chelating N-heterocyclic carbene/thioether ligands

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Publication details

The article was received on 10 Mar 2011, accepted on 17 May 2011 and first published on 14 Jun 2011


Article type: Paper
DOI: 10.1039/C1NJ20224C
Citation: New J. Chem., 2011,35, 2162-2168
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    Rhodium(III) and ruthenium(II) complexes of redox-active, chelating N-heterocyclic carbene/thioether ligands

    A. Labande, J. Daran, N. J. Long, A. J. P. White and R. Poli, New J. Chem., 2011, 35, 2162
    DOI: 10.1039/C1NJ20224C

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