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American Chemical Society, Organometallics, 12(31), p. 4623-4626, 2012

DOI: 10.1021/om3003834

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Pyracenebis(imidazolylidene): a new Janus-type biscarbene and its coordination to rhodium and iridium

Journal article published in 2012 by Amparo Prades Ferrer ORCID, Eduardo Peris Fajarnés, Manuel Alcarazo
This paper is available in a repository.
This paper is available in a repository.

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Abstract

A pyracene-linked bis-azolium compound has been obtained from the bisannulation of tetrakis(iminopyracene) (TIP) with chloromethyl methyl ether. The resulting bisazolium 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.