@article{Siemeling2009SixMe-13792,
  year={2009},
  doi={10.1002/ejic.200900863},
  title={Six-Membered N-Heterocyclic Carbenes with a 1,1′-Ferrocenediyl Backbone : Bulky Ligands with Strong Electron-Donor Capacity and Unusual Non-Innocent Character},
  number={31},
  volume={2009},
  issn={1434-1948},
  journal={European Journal of Inorganic Chemistry},
  pages={4607--4612},
  author={Siemeling, Ulrich and Färber, Christian and Leibold, Michael and Bruhn, Clemens and Mücke, Philipp and Winter, Rainer F. and Sarkar, Biprajit and von Hopffgarten, Moritz and Frenking, Gernod}
}

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    <dc:creator>Winter, Rainer F.</dc:creator>
    <dc:contributor>von Hopffgarten, Moritz</dc:contributor>
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    <dc:contributor>Mücke, Philipp</dc:contributor>
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    <dcterms:issued>2009</dcterms:issued>
    <dc:contributor>Leibold, Michael</dc:contributor>
    <dc:contributor>Sarkar, Biprajit</dc:contributor>
    <dc:contributor>Frenking, Gernod</dc:contributor>
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    <dc:contributor>Färber, Christian</dc:contributor>
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    <dcterms:title>Six-Membered N-Heterocyclic Carbenes with a 1,1′-Ferrocenediyl Backbone : Bulky Ligands with Strong Electron-Donor Capacity and Unusual Non-Innocent Character</dcterms:title>
    <dc:creator>Bruhn, Clemens</dc:creator>
    <dc:creator>Mücke, Philipp</dc:creator>
    <dc:creator>Färber, Christian</dc:creator>
    <dc:creator>Siemeling, Ulrich</dc:creator>
    <dcterms:abstract xml:lang="eng">Abstract&lt;br /&gt;&lt;br /&gt;The stable, crystalline N-heterocyclic diaminocarbene fc[N(CH2tBu)-C-N(CH2tBu)] (2d, fc = 1,1′-ferrocenediyl) was prepared by deprotonation of its formamidinium precursor fc[N(CH2tBu)-CH-N(CH2tBu)][BF4] (1d) and used for the preparation of the 16 valence electron complexes [Mo(2d)(CO)4], [RhCl(2d)(cod)] (cod = 1,5-cyclooctadiene) and [RhCl(2d)(CO)2]. 1d, 2d and [RhCl(2d)(cod)] were structurally characterised by single-crystal X-ray diffraction studies. The electrochemical properties of 2d, its 2-adamantyl analogue 2c, its complex [RhCl(2d)(CO)2] and of the precursors 1d and 1,1′-bis(neopentylamino)ferrocene were investigated by electrochemistry. The carbenes are easily oxidised to the corresponding radical cation, whose persistent nature is unprecedented in the chemistry of N-heterocyclic carbenes. The spin density is located at the Fe atom and the carbene C atom according to the results of EPR spectroscopic studies and DFT calculations.</dcterms:abstract>
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    <dc:creator>Leibold, Michael</dc:creator>
    <dc:creator>Sarkar, Biprajit</dc:creator>
    <dcterms:bibliographicCitation>First publ. in: European Journal of Inorganic Chemistry (2009), 31, pp. 4607–4612</dcterms:bibliographicCitation>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-06-21T11:28:06Z</dc:date>
    <dc:contributor>Siemeling, Ulrich</dc:contributor>
    <dc:creator>von Hopffgarten, Moritz</dc:creator>
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