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Pyracenebis(imidazolylidene): A New Janus-Type Biscarbene and Its Coordination to Rhodium and Iridium

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons58392

Alcarazo,  M.
Research Group Alcarazo, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Prades, A., Peris, E., & Alcarazo, M. (2012). Pyracenebis(imidazolylidene): A New Janus-Type Biscarbene and Its Coordination to Rhodium and Iridium. Organometallics, 31(12), 4623-4626. doi:10.1021/om3003834.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-7811-1
Abstract
A pyracene-linked bis-azolium compound has been obtained from the bis-annulation of tetrakis(iminopyracene) (TIP) with chloromethyl methyl ether. The resulting bis-azolium salt was readily coordinated to rhodium and iridium, affording bis-NHC complexes with 2-fold symmetry. The X-ray structural characterization of the Rh complex containing the pyracenebis(imidazolylidene) ligand is also reported. The new bis-NHC ligand consists of two linearly opposed (Janus-type) imidazolylidenes annulated to both sides of a pyracene skeleton.