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Issue 17, 2002
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Synthesis, characterisation and catalytic activity of metal complexes of neutral, unsymmetrical P/S ferrocenediyl ligands

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Abstract

Two asymmetric 1,1′-disubstituted ferrocenediyl ligands, 1-(diphenylphosphino)-1′-(methylthio)ferrocene (1) and 1-(diphenylphosphino)-1′-(mesitylthio)ferrocene (2) featuring phosphine and thioether substituents have been conveniently synthesised and the coordination chemistry of 1 probed by reaction with transition metal reagents. With Group 10 metal and Rh(I) species, chelating complexes are formed in high yield and a monodentate bis ligand complex with trans phosphorus ligation can also be synthesised using a Pd(II) species and three equivalents of 1. With [M(CO)5thf] (M = Cr, Mo or W), 1 forms a mixture of monodentate, P-bound pentacarbonyl and P/S-chelating tetracarbonyl products. The monodentate pentacarbonyl product can be converted into the chelating tetracarbonyl species via prolonged reflux in toluene. Preliminary studies show that 1, in combination with Pd(0) precursors, can act as a catalyst for the Suzuki coupling reaction.

Graphical abstract: Synthesis, characterisation and catalytic activity of metal complexes of neutral, unsymmetrical P/S ferrocenediyl ligands

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Publication details

The article was received on 10 Jun 2002, accepted on 12 Jul 2002 and first published on 05 Aug 2002


Article type: Paper
DOI: 10.1039/B205653D
Citation: J. Chem. Soc., Dalton Trans., 2002, 3280-3289
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    Synthesis, characterisation and catalytic activity of metal complexes of neutral, unsymmetrical P/S ferrocenediyl ligands

    V. C. Gibson, N. J. Long, A. J. P. White, C. K. Williams, D. J. Williams, M. Fontani and P. Zanello, J. Chem. Soc., Dalton Trans., 2002, 3280
    DOI: 10.1039/B205653D

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