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Issue 10, 2012
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Exploiting a dimeric silver transmetallating reagent to synthesize macrocyclic tetracarbene complexes

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Abstract

A dimeric macrocyclic tetra-N-heterocyclic carbene (NHC) silver complex was synthesized and shown to successfully extend transmetallation of polydentate NHCs beyond bidentate NHCs. The silver complex was utilized in the preparation of a variety of monomeric tetra-NHC complexes ranging from early first row to late third row transition metals in moderate to high yield for a total of nine examples of transmetallation. Among these complexes are rare examples of silver transmetallation with first row transition metals: chromium, iron, and cobalt. Additionally, the first examples of tetracarbenes on chromium and gold are reported. All compounds were characterized by single crystal X-ray diffraction, ESI-MS, and spectroscopic techniques.

Graphical abstract: Exploiting a dimeric silver transmetallating reagent to synthesize macrocyclic tetracarbene complexes

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Publication details

The article was received on 17 May 2012, accepted on 12 Jul 2012 and first published on 02 Aug 2012


Article type: Edge Article
DOI: 10.1039/C2SC20628E
Citation: Chem. Sci., 2012,3, 3081-3087
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    Exploiting a dimeric silver transmetallating reagent to synthesize macrocyclic tetracarbene complexes

    Z. Lu, S. A. Cramer and D. M. Jenkins, Chem. Sci., 2012, 3, 3081
    DOI: 10.1039/C2SC20628E

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